Updated MySQL connection management to use the MySQL connection pooling. This should accommodate various timeout problems that exist with the current connection pool code in a more general and standard way.

OpenSim/Data/MySQL/MySQLAssetData.cs

@@ -43,10 +43,13 @@ namespace OpenSim.Data.MySQL
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        private MySQLManager _dbConnection;
+        private string m_connectionString;
+        private object m_dbLock = new object();
 
         #region IPlugin Members
 
+        public override string Version { get { return "1.0.0.0"; } }
+
         /// <summary>
         /// <para>Initialises Asset interface</para>
         /// <para>
@@ -58,62 +61,28 @@ namespace OpenSim.Data.MySQL
         /// </para>
         /// </summary>
         /// <param name="connect">connect string</param>
-        override public void Initialise(string connect)
+        public override void Initialise(string connect)
         {
-            // TODO: This will let you pass in the connect string in
+            m_connectionString = connect;
-            // the config, though someone will need to write that.
-            if (connect == String.Empty)
-            {
-                // This is old seperate config file
-                m_log.Warn("no connect string, using old mysql_connection.ini instead");
-                Initialise();
-            }
-            else
-            {
-                _dbConnection = new MySQLManager(connect);
-            }
 
             // This actually does the roll forward assembly stuff
             Assembly assem = GetType().Assembly;
-            Migration m = new Migration(_dbConnection.Connection, assem, "AssetStore");
 
-            m.Update();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, assem, "AssetStore");
+                m.Update();
+            }
         }
 
-        /// <summary>
-        /// <para>Initialises Asset interface</para>
-        /// <para>
-        /// <list type="bullet">
-        /// <item>Loads and initialises the MySQL storage plugin</item>
-        /// <item>uses the obsolete mysql_connection.ini</item>
-        /// </list>
-        /// </para>
-        /// </summary>
-        /// <remarks>DEPRECATED and shouldn't be used</remarks>
         public override void Initialise()
         {
-            IniFile GridDataMySqlFile = new IniFile("mysql_connection.ini");
+            throw new NotImplementedException();
-            string hostname = GridDataMySqlFile.ParseFileReadValue("hostname");
-            string database = GridDataMySqlFile.ParseFileReadValue("database");
-            string username = GridDataMySqlFile.ParseFileReadValue("username");
-            string password = GridDataMySqlFile.ParseFileReadValue("password");
-            string pooling = GridDataMySqlFile.ParseFileReadValue("pooling");
-            string port = GridDataMySqlFile.ParseFileReadValue("port");
-
-            _dbConnection = new MySQLManager(hostname, database, username, password, pooling, port);
-
         }
 
         public override void Dispose() { }
 
-        /// <summary>
-        /// Database provider version
-        /// </summary>
-        override public string Version
-        {
-            get { return _dbConnection.getVersion(); }
-        }
-
         /// <summary>
         /// The name of this DB provider
         /// </summary>
@@ -135,46 +104,43 @@ namespace OpenSim.Data.MySQL
         override public AssetBase GetAsset(UUID assetID)
         {
             AssetBase asset = null;
-            lock (_dbConnection)
+            lock (m_dbLock)
             {
-                _dbConnection.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                MySqlCommand cmd =
+                    using (MySqlCommand cmd = new MySqlCommand(
-                    new MySqlCommand(
                         "SELECT name, description, assetType, local, temporary, data FROM assets WHERE id=?id",
-                        _dbConnection.Connection);
+                        dbcon))
-                cmd.Parameters.AddWithValue("?id", assetID.ToString());
-
-                try
-                {
-                    using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
                     {
-                        if (dbReader.Read())
+                        cmd.Parameters.AddWithValue("?id", assetID.ToString());
+
+                        try
                         {
-                            asset = new AssetBase(assetID, (string)dbReader["name"], (sbyte)dbReader["assetType"]);
+                            using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
-                            asset.Data = (byte[]) dbReader["data"];
+                            {
-                            asset.Description = (string) dbReader["description"];
+                                if (dbReader.Read())
+                                {
+                                    asset = new AssetBase(assetID, (string)dbReader["name"], (sbyte)dbReader["assetType"]);
+                                    asset.Data = (byte[])dbReader["data"];
+                                    asset.Description = (string)dbReader["description"];
 
-                            string local = dbReader["local"].ToString();
+                                    string local = dbReader["local"].ToString();
-                            if (local.Equals("1") || local.Equals("true", StringComparison.InvariantCultureIgnoreCase))
+                                    if (local.Equals("1") || local.Equals("true", StringComparison.InvariantCultureIgnoreCase))
-                                asset.Local = true;
+                                        asset.Local = true;
-                            else
+                                    else
-                                asset.Local = false;
+                                        asset.Local = false;
 
-                            asset.Temporary = Convert.ToBoolean(dbReader["temporary"]);
+                                    asset.Temporary = Convert.ToBoolean(dbReader["temporary"]);
+                                }
+                            }
+                        }
+                        catch (Exception e)
+                        {
+                            m_log.Error("[ASSETS DB]: MySql failure fetching asset " + assetID + ": " + e.Message);
                         }
-                        dbReader.Close();
-                        cmd.Dispose();
                     }
-                    if (asset != null)
-                        UpdateAccessTime(asset);
-                }
-                catch (Exception e)
-                {
-                    m_log.ErrorFormat(
-                        "[ASSETS DB]: MySql failure fetching asset {0}" + Environment.NewLine + e.ToString()
-                        + Environment.NewLine + "Reconnecting", assetID);
-                    _dbConnection.Reconnect();
                 }
             }
             return asset;
@@ -187,55 +153,57 @@ namespace OpenSim.Data.MySQL
         /// <remarks>On failure : Throw an exception and attempt to reconnect to database</remarks>
         override public void StoreAsset(AssetBase asset)
         {
-            lock (_dbConnection)
+            lock (m_dbLock)
             {
-                _dbConnection.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-                MySqlCommand cmd =
-                    new MySqlCommand(
-                        "replace INTO assets(id, name, description, assetType, local, temporary, create_time, access_time, data)" +
-                        "VALUES(?id, ?name, ?description, ?assetType, ?local, ?temporary, ?create_time, ?access_time, ?data)",
-                        _dbConnection.Connection);
-
-                string assetName = asset.Name;
-                if (asset.Name.Length > 64)
                 {
-                    assetName = asset.Name.Substring(0, 64);
+                    dbcon.Open();
-                    m_log.Warn("[ASSET DB]: Name field truncated from " + asset.Name.Length + " to " + assetName.Length + " characters on add");
-                }
 
-                string assetDescription = asset.Description;
+                    MySqlCommand cmd =
-                if (asset.Description.Length > 64)
+                        new MySqlCommand(
-                {
+                            "replace INTO assets(id, name, description, assetType, local, temporary, create_time, access_time, data)" +
-                    assetDescription = asset.Description.Substring(0, 64);
+                            "VALUES(?id, ?name, ?description, ?assetType, ?local, ?temporary, ?create_time, ?access_time, ?data)",
-                    m_log.Warn("[ASSET DB]: Description field truncated from " + asset.Description.Length + " to " + assetDescription.Length + " characters on add");
+                            dbcon);
-                }
 
-                // need to ensure we dispose
+                    string assetName = asset.Name;
-                try
+                    if (asset.Name.Length > 64)
-                {
-                    using (cmd)
                     {
-                        // create unix epoch time
+                        assetName = asset.Name.Substring(0, 64);
-                        int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow);
+                        m_log.Warn("[ASSET DB]: Name field truncated from " + asset.Name.Length + " to " + assetName.Length + " characters on add");
-                        cmd.Parameters.AddWithValue("?id", asset.ID);
+                    }
-                        cmd.Parameters.AddWithValue("?name", assetName);
+
-                        cmd.Parameters.AddWithValue("?description", assetDescription);
+                    string assetDescription = asset.Description;
-                        cmd.Parameters.AddWithValue("?assetType", asset.Type);
+                    if (asset.Description.Length > 64)
-                        cmd.Parameters.AddWithValue("?local", asset.Local);
+                    {
-                        cmd.Parameters.AddWithValue("?temporary", asset.Temporary);
+                        assetDescription = asset.Description.Substring(0, 64);
-                        cmd.Parameters.AddWithValue("?create_time", now);
+                        m_log.Warn("[ASSET DB]: Description field truncated from " + asset.Description.Length + " to " + assetDescription.Length + " characters on add");
-                        cmd.Parameters.AddWithValue("?access_time", now);
+                    }
-                        cmd.Parameters.AddWithValue("?data", asset.Data);
+
-                        cmd.ExecuteNonQuery();
+                    // need to ensure we dispose
-                        cmd.Dispose();
+                    try
+                    {
+                        using (cmd)
+                        {
+                            // create unix epoch time
+                            int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow);
+                            cmd.Parameters.AddWithValue("?id", asset.ID);
+                            cmd.Parameters.AddWithValue("?name", assetName);
+                            cmd.Parameters.AddWithValue("?description", assetDescription);
+                            cmd.Parameters.AddWithValue("?assetType", asset.Type);
+                            cmd.Parameters.AddWithValue("?local", asset.Local);
+                            cmd.Parameters.AddWithValue("?temporary", asset.Temporary);
+                            cmd.Parameters.AddWithValue("?create_time", now);
+                            cmd.Parameters.AddWithValue("?access_time", now);
+                            cmd.Parameters.AddWithValue("?data", asset.Data);
+                            cmd.ExecuteNonQuery();
+                            cmd.Dispose();
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat("[ASSET DB]: MySQL failure creating asset {0} with name \"{1}\". Error: {2}",
+                            asset.FullID, asset.Name, e.Message);
                     }
-                }
-                catch (Exception e)
-                {
-                    m_log.ErrorFormat("[ASSET DB]: MySQL failure creating asset {0} with name \"{1}\". Attempting reconnect. Error: {2}",
-                        asset.FullID, asset.Name, e.Message);
-                    _dbConnection.Reconnect();
                 }
             }
         }
@@ -245,34 +213,35 @@ namespace OpenSim.Data.MySQL
             // Writing to the database every time Get() is called on an asset is killing us. Seriously. -jph
             return;
 
-            lock (_dbConnection)
+            lock (m_dbLock)
             {
-                _dbConnection.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-                MySqlCommand cmd =
-                    new MySqlCommand("update assets set access_time=?access_time where id=?id",
-                                     _dbConnection.Connection);
-
-                // need to ensure we dispose
-                try
                 {
-                    using (cmd)
+                    dbcon.Open();
+                    MySqlCommand cmd =
+                        new MySqlCommand("update assets set access_time=?access_time where id=?id",
+                                         dbcon);
+
+                    // need to ensure we dispose
+                    try
                     {
-                        // create unix epoch time
+                        using (cmd)
-                        int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow);
+                        {
-                        cmd.Parameters.AddWithValue("?id", asset.ID);
+                            // create unix epoch time
-                        cmd.Parameters.AddWithValue("?access_time", now);
+                            int now = (int)Utils.DateTimeToUnixTime(DateTime.UtcNow);
-                        cmd.ExecuteNonQuery();
+                            cmd.Parameters.AddWithValue("?id", asset.ID);
-                        cmd.Dispose();
+                            cmd.Parameters.AddWithValue("?access_time", now);
+                            cmd.ExecuteNonQuery();
+                            cmd.Dispose();
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat(
+                            "[ASSETS DB]: " +
+                            "MySql failure updating access_time for asset {0} with name {1}" + Environment.NewLine + e.ToString()
+                            + Environment.NewLine + "Attempting reconnection", asset.FullID, asset.Name);
                     }
-                }
-                catch (Exception e)
-                {
-                    m_log.ErrorFormat(
-                        "[ASSETS DB]: " +
-                        "MySql failure updating access_time for asset {0} with name {1}" + Environment.NewLine + e.ToString()
-                        + Environment.NewLine + "Attempting reconnection", asset.FullID, asset.Name);
-                    _dbConnection.Reconnect();
                 }
             }
 
@@ -287,37 +256,30 @@ namespace OpenSim.Data.MySQL
         {
             bool assetExists = false;
 
-            lock (_dbConnection)
+            lock (m_dbLock)
             {
-                _dbConnection.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-                MySqlCommand cmd =
-                    new MySqlCommand(
-                        "SELECT id FROM assets WHERE id=?id",
-                        _dbConnection.Connection);
-
-                cmd.Parameters.AddWithValue("?id", uuid.ToString());
-
-                try
                 {
-                    using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
+                    dbcon.Open();
+                    using (MySqlCommand cmd = new MySqlCommand("SELECT id FROM assets WHERE id=?id", dbcon))
                     {
-                        if (dbReader.Read())
+                        cmd.Parameters.AddWithValue("?id", uuid.ToString());
-                        {
-                            assetExists = true;
-                        }
 
-                        dbReader.Close();
+                        try
-                        cmd.Dispose();
+                        {
+                            using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
+                            {
+                                if (dbReader.Read())
+                                    assetExists = true;
+                            }
+                        }
+                        catch (Exception e)
+                        {
+                            m_log.ErrorFormat(
+                                "[ASSETS DB]: MySql failure fetching asset {0}" + Environment.NewLine + e.ToString(), uuid);
+                        }
                     }
                 }
-                catch (Exception e)
-                {
-                    m_log.ErrorFormat(
-                        "[ASSETS DB]: MySql failure fetching asset {0}" + Environment.NewLine + e.ToString()
-                        + Environment.NewLine + "Attempting reconnection", uuid);
-                    _dbConnection.Reconnect();
-                }
             }
 
             return assetExists;
@@ -335,38 +297,39 @@ namespace OpenSim.Data.MySQL
         {
             List<AssetMetadata> retList = new List<AssetMetadata>(count);
 
-            lock (_dbConnection)
+            lock (m_dbLock)
             {
-                _dbConnection.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-                MySqlCommand cmd = new MySqlCommand("SELECT name,description,assetType,temporary,id FROM assets LIMIT ?start, ?count", _dbConnection.Connection);
-                cmd.Parameters.AddWithValue("?start", start);
-                cmd.Parameters.AddWithValue("?count", count);
-
-                try
                 {
-                    using (MySqlDataReader dbReader = cmd.ExecuteReader())
+                    dbcon.Open();
+                    MySqlCommand cmd = new MySqlCommand("SELECT name,description,assetType,temporary,id FROM assets LIMIT ?start, ?count", dbcon);
+                    cmd.Parameters.AddWithValue("?start", start);
+                    cmd.Parameters.AddWithValue("?count", count);
+
+                    try
                     {
-                        while (dbReader.Read())
+                        using (MySqlDataReader dbReader = cmd.ExecuteReader())
                         {
-                            AssetMetadata metadata = new AssetMetadata();
+                            while (dbReader.Read())
-                            metadata.Name = (string) dbReader["name"];
+                            {
-                            metadata.Description = (string) dbReader["description"];
+                                AssetMetadata metadata = new AssetMetadata();
-                            metadata.Type = (sbyte) dbReader["assetType"];
+                                metadata.Name = (string)dbReader["name"];
-                            metadata.Temporary = Convert.ToBoolean(dbReader["temporary"]); // Not sure if this is correct.
+                                metadata.Description = (string)dbReader["description"];
-                            metadata.FullID = new UUID((string) dbReader["id"]);
+                                metadata.Type = (sbyte)dbReader["assetType"];
+                                metadata.Temporary = Convert.ToBoolean(dbReader["temporary"]); // Not sure if this is correct.
+                                metadata.FullID = new UUID((string)dbReader["id"]);
 
-                            // Current SHA1s are not stored/computed.
+                                // Current SHA1s are not stored/computed.
-                            metadata.SHA1 = new byte[] {};
+                                metadata.SHA1 = new byte[] { };
 
-                            retList.Add(metadata);
+                                retList.Add(metadata);
+                            }
                         }
                     }
-                }
+                    catch (Exception e)
-                catch (Exception e)
+                    {
-                {
+                        m_log.Error("[ASSETS DB]: MySql failure fetching asset set" + Environment.NewLine + e.ToString());
-                    m_log.Error("[ASSETS DB]: MySql failure fetching asset set" + Environment.NewLine + e.ToString() + Environment.NewLine + "Attempting reconnection");
+                    }
-                    _dbConnection.Reconnect();
                 }
             }
 
@@ -374,7 +337,5 @@ namespace OpenSim.Data.MySQL
         }
 
         #endregion
-
-
     }
 }

OpenSim/Data/MySQL/MySQLAuthenticationData.cs

@@ -38,16 +38,22 @@ namespace OpenSim.Data.MySQL
     public class MySqlAuthenticationData : MySqlFramework, IAuthenticationData
     {
         private string m_Realm;
-        private List<string> m_ColumnNames = null;
+        private List<string> m_ColumnNames;
-        private int m_LastExpire = 0;
+        private int m_LastExpire;
+        // private string m_connectionString;
 
         public MySqlAuthenticationData(string connectionString, string realm)
                 : base(connectionString)
         {
             m_Realm = realm;
+            m_connectionString = connectionString;
 
-            Migration m = new Migration(m_Connection, GetType().Assembly, "AuthStore");
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-            m.Update();
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, GetType().Assembly, "AuthStore");
+                m.Update();
+            }
         }
 
         public AuthenticationData Get(UUID principalID)
@@ -55,45 +61,42 @@ namespace OpenSim.Data.MySQL
             AuthenticationData ret = new AuthenticationData();
             ret.Data = new Dictionary<string, object>();
 
-            MySqlCommand cmd = new MySqlCommand(
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                "select * from `"+m_Realm+"` where UUID = ?principalID"
-            );
-
-            cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
-
-            IDataReader result = ExecuteReader(cmd);
-
-            if (result.Read())
             {
-                ret.PrincipalID = principalID;
+                dbcon.Open();
+                MySqlCommand cmd = new MySqlCommand("select * from `" + m_Realm + "` where UUID = ?principalID", dbcon);
+                cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
 
-                if (m_ColumnNames == null)
+                IDataReader result = cmd.ExecuteReader();
+
+                if (result.Read())
                 {
-                    m_ColumnNames = new List<string>();
+                    ret.PrincipalID = principalID;
 
-                    DataTable schemaTable = result.GetSchemaTable();
+                    if (m_ColumnNames == null)
-                    foreach (DataRow row in schemaTable.Rows)
+                    {
-                        m_ColumnNames.Add(row["ColumnName"].ToString());
+                        m_ColumnNames = new List<string>();
+
+                        DataTable schemaTable = result.GetSchemaTable();
+                        foreach (DataRow row in schemaTable.Rows)
+                            m_ColumnNames.Add(row["ColumnName"].ToString());
+                    }
+
+                    foreach (string s in m_ColumnNames)
+                    {
+                        if (s == "UUID")
+                            continue;
+
+                        ret.Data[s] = result[s].ToString();
+                    }
+
+                    return ret;
                 }
-
+                else
-                foreach (string s in m_ColumnNames)
                 {
-                    if (s == "UUID")
+                    return null;
-                        continue;
-
-                    ret.Data[s] = result[s].ToString();
                 }
-
-                result.Close();
-                CloseReaderCommand(cmd);
-
-                return ret;
             }
-
-            result.Close();
-            CloseReaderCommand(cmd);
-
-            return null;
         }
 
         public bool Store(AuthenticationData data)

OpenSim/Data/MySQL/MySQLEstateData.cs

@@ -44,7 +44,6 @@ namespace OpenSim.Data.MySQL
 
         private const string m_waitTimeoutSelect = "select @@wait_timeout";
 
-        private MySqlConnection m_connection;
         private string m_connectionString;
         private long m_waitTimeout;
         private long m_waitTimeoutLeeway = 60 * TimeSpan.TicksPerSecond;
@@ -67,24 +66,26 @@ namespace OpenSim.Data.MySQL
                 m_log.Debug("Exception: password not found in connection string\n" + e.ToString());
             }
 
-            m_connection = new MySqlConnection(m_connectionString);
-            m_connection.Open();
-
             GetWaitTimeout();
 
-            Assembly assem = GetType().Assembly;
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-            Migration m = new Migration(m_connection, assem, "EstateStore");
-            m.Update();
-
-            Type t = typeof(EstateSettings);
-            m_Fields = t.GetFields(BindingFlags.NonPublic |
-                                   BindingFlags.Instance |
-                                   BindingFlags.DeclaredOnly);
-
-            foreach (FieldInfo f in m_Fields)
             {
-                if (f.Name.Substring(0, 2) == "m_")
+                dbcon.Open();
-                    m_FieldMap[f.Name.Substring(2)] = f;
+
+                Assembly assem = GetType().Assembly;
+                Migration m = new Migration(dbcon, assem, "EstateStore");
+                m.Update();
+
+                Type t = typeof(EstateSettings);
+                m_Fields = t.GetFields(BindingFlags.NonPublic |
+                                       BindingFlags.Instance |
+                                       BindingFlags.DeclaredOnly);
+
+                foreach (FieldInfo f in m_Fields)
+                {
+                    if (f.Name.Substring(0, 2) == "m_")
+                        m_FieldMap[f.Name.Substring(2)] = f;
+                }
             }
         }
 
@@ -95,47 +96,29 @@ namespace OpenSim.Data.MySQL
 
         protected void GetWaitTimeout()
         {
-            MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect,
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    m_connection);
-
-            using (MySqlDataReader dbReader =
-                    cmd.ExecuteReader(CommandBehavior.SingleRow))
             {
-                if (dbReader.Read())
+                dbcon.Open();
+
+                using (MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect, dbcon))
                 {
-                    m_waitTimeout
+                    using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
-                        = Convert.ToInt32(dbReader["@@wait_timeout"]) *
+                    {
-                        TimeSpan.TicksPerSecond + m_waitTimeoutLeeway;
+                        if (dbReader.Read())
+                        {
+                            m_waitTimeout
+                                = Convert.ToInt32(dbReader["@@wait_timeout"]) *
+                                TimeSpan.TicksPerSecond + m_waitTimeoutLeeway;
+                        }
+                    }
                 }
 
-                dbReader.Close();
+                m_lastConnectionUse = DateTime.Now.Ticks;
-                cmd.Dispose();
+
+                m_log.DebugFormat(
+                    "[REGION DB]: Connection wait timeout {0} seconds",
+                    m_waitTimeout / TimeSpan.TicksPerSecond);
             }
-
-            m_lastConnectionUse = DateTime.Now.Ticks;
-
-            m_log.DebugFormat(
-                "[REGION DB]: Connection wait timeout {0} seconds",
-                m_waitTimeout / TimeSpan.TicksPerSecond);
-        }
-
-        protected void CheckConnection()
-        {
-            long timeNow = DateTime.Now.Ticks;
-            if (timeNow - m_lastConnectionUse > m_waitTimeout ||
-                    m_connection.State != ConnectionState.Open)
-            {
-                m_log.DebugFormat("[REGION DB]: Database connection has gone away - reconnecting");
-
-                lock (m_connection)
-                {
-                    m_connection.Close();
-                    m_connection = new MySqlConnection(m_connectionString);
-                    m_connection.Open();
-                }
-            }
-
-            m_lastConnectionUse = timeNow;
         }
 
         public EstateSettings LoadEstateSettings(UUID regionID)
@@ -143,114 +126,111 @@ namespace OpenSim.Data.MySQL
             EstateSettings es = new EstateSettings();
             es.OnSave += StoreEstateSettings;
 
-            string sql = "select estate_settings." + String.Join(",estate_settings.", FieldList) + " from estate_map left join estate_settings on estate_map.EstateID = estate_settings.EstateID where estate_settings.EstateID is not null and RegionID = ?RegionID";
+            string sql = "select estate_settings." + String.Join(",estate_settings.", FieldList) +
+                " from estate_map left join estate_settings on estate_map.EstateID = estate_settings.EstateID where estate_settings.EstateID is not null and RegionID = ?RegionID";
 
-            CheckConnection();
+            bool migration = true;
 
-            MySqlCommand cmd = m_connection.CreateCommand();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            cmd.CommandText = sql;
-            cmd.Parameters.AddWithValue("?RegionID", regionID.ToString());
-
-            IDataReader r = cmd.ExecuteReader();
-
-            if (r.Read())
             {
-                foreach (string name in FieldList)
+                dbcon.Open();
+
+                using (MySqlCommand cmd = dbcon.CreateCommand())
                 {
-                    if (m_FieldMap[name].GetValue(es) is bool)
+                    cmd.CommandText = sql;
+                    cmd.Parameters.AddWithValue("?RegionID", regionID.ToString());
+
+                    using (IDataReader r = cmd.ExecuteReader())
                     {
-                        int v = Convert.ToInt32(r[name]);
+                        if (r.Read())
-                        if (v != 0)
+                        {
-                            m_FieldMap[name].SetValue(es, true);
+                            migration = false;
-                        else
-                            m_FieldMap[name].SetValue(es, false);
-                    }
-                    else if (m_FieldMap[name].GetValue(es) is UUID)
-                    {
-                        UUID uuid = UUID.Zero;
 
-                        UUID.TryParse(r[name].ToString(), out uuid);
+                            foreach (string name in FieldList)
-                        m_FieldMap[name].SetValue(es, uuid);
+                            {
-                    }
+                                if (m_FieldMap[name].GetValue(es) is bool)
-                    else
+                                {
-                    {
+                                    int v = Convert.ToInt32(r[name]);
-                        m_FieldMap[name].SetValue(es, r[name]);
+                                    if (v != 0)
-                    }
+                                        m_FieldMap[name].SetValue(es, true);
-                }
+                                    else
-                r.Close();
+                                        m_FieldMap[name].SetValue(es, false);
-            }
+                                }
-            else
+                                else if (m_FieldMap[name].GetValue(es) is UUID)
-            {
+                                {
-                // Migration case
+                                    UUID uuid = UUID.Zero;
-                //
-                r.Close();
 
-                List<string> names = new List<string>(FieldList);
+                                    UUID.TryParse(r[name].ToString(), out uuid);
-
+                                    m_FieldMap[name].SetValue(es, uuid);
-                names.Remove("EstateID");
+                                }
-
+                                else
-                sql = "insert into estate_settings (" + String.Join(",", names.ToArray()) + ") values ( ?" + String.Join(", ?", names.ToArray()) + ")";
+                                {
-
+                                    m_FieldMap[name].SetValue(es, r[name]);
-                cmd.CommandText = sql;
+                                }
-                cmd.Parameters.Clear();
+                            }
-
+                        }
-                foreach (string name in FieldList)
-                {
-                    if (m_FieldMap[name].GetValue(es) is bool)
-                    {
-                        if ((bool)m_FieldMap[name].GetValue(es))
-                            cmd.Parameters.AddWithValue("?" + name, "1");
-                        else
-                            cmd.Parameters.AddWithValue("?" + name, "0");
-                    }
-                    else
-                    {
-                        cmd.Parameters.AddWithValue("?" + name, m_FieldMap[name].GetValue(es).ToString());
                     }
                 }
 
-                cmd.ExecuteNonQuery();
+                if (migration)
-
-                cmd.CommandText = "select LAST_INSERT_ID() as id";
-                cmd.Parameters.Clear();
-
-                r = cmd.ExecuteReader();
-
-                r.Read();
-
-                es.EstateID = Convert.ToUInt32(r["id"]);
-
-                r.Close();
-
-                cmd.CommandText = "insert into estate_map values (?RegionID, ?EstateID)";
-                cmd.Parameters.AddWithValue("?RegionID", regionID.ToString());
-                cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
-
-                // This will throw on dupe key
-                try
                 {
-                    cmd.ExecuteNonQuery();
+                    // Migration case
-                }
+                    List<string> names = new List<string>(FieldList);
-                catch (Exception)
-                {
-                }
 
-                // Munge and transfer the ban list
+                    names.Remove("EstateID");
-                //
-                cmd.Parameters.Clear();
-                cmd.CommandText = "insert into estateban select " + es.EstateID.ToString() + ", bannedUUID, bannedIp, bannedIpHostMask, '' from regionban where regionban.regionUUID = ?UUID";
-                cmd.Parameters.AddWithValue("?UUID", regionID.ToString());
 
-                try
+                    sql = "insert into estate_settings (" + String.Join(",", names.ToArray()) + ") values ( ?" + String.Join(", ?", names.ToArray()) + ")";
-                {
-                    cmd.ExecuteNonQuery();
-                }
-                catch (Exception)
-                {
-                }
 
-                es.Save();
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
+                    {
+                        cmd.CommandText = sql;
+                        cmd.Parameters.Clear();
+
+                        foreach (string name in FieldList)
+                        {
+                            if (m_FieldMap[name].GetValue(es) is bool)
+                            {
+                                if ((bool)m_FieldMap[name].GetValue(es))
+                                    cmd.Parameters.AddWithValue("?" + name, "1");
+                                else
+                                    cmd.Parameters.AddWithValue("?" + name, "0");
+                            }
+                            else
+                            {
+                                cmd.Parameters.AddWithValue("?" + name, m_FieldMap[name].GetValue(es).ToString());
+                            }
+                        }
+
+                        cmd.ExecuteNonQuery();
+
+                        cmd.CommandText = "select LAST_INSERT_ID() as id";
+                        cmd.Parameters.Clear();
+
+                        using (IDataReader r = cmd.ExecuteReader())
+                        {
+                            r.Read();
+                            es.EstateID = Convert.ToUInt32(r["id"]);
+                        }
+
+                        cmd.CommandText = "insert into estate_map values (?RegionID, ?EstateID)";
+                        cmd.Parameters.AddWithValue("?RegionID", regionID.ToString());
+                        cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
+
+                        // This will throw on dupe key
+                        try { cmd.ExecuteNonQuery(); }
+                        catch (Exception) { }
+
+                        // Munge and transfer the ban list
+                        cmd.Parameters.Clear();
+                        cmd.CommandText = "insert into estateban select " + es.EstateID.ToString() + ", bannedUUID, bannedIp, bannedIpHostMask, '' from regionban where regionban.regionUUID = ?UUID";
+                        cmd.Parameters.AddWithValue("?UUID", regionID.ToString());
+
+                        try { cmd.ExecuteNonQuery(); }
+                        catch (Exception) { }
+
+                        es.Save();
+                    }
+                }
             }
 
             LoadBanList(es);
@@ -265,29 +245,33 @@ namespace OpenSim.Data.MySQL
         {
             string sql = "replace into estate_settings (" + String.Join(",", FieldList) + ") values ( ?" + String.Join(", ?", FieldList) + ")";
 
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            MySqlCommand cmd = m_connection.CreateCommand();
-
-            cmd.CommandText = sql;
-
-            foreach (string name in FieldList)
             {
-                if (m_FieldMap[name].GetValue(es) is bool)
+                dbcon.Open();
+
+                using (MySqlCommand cmd = dbcon.CreateCommand())
                 {
-                    if ((bool)m_FieldMap[name].GetValue(es))
+                    cmd.CommandText = sql;
-                        cmd.Parameters.AddWithValue("?" + name, "1");
+
-                    else
+                    foreach (string name in FieldList)
-                        cmd.Parameters.AddWithValue("?" + name, "0");
+                    {
-                }
+                        if (m_FieldMap[name].GetValue(es) is bool)
-                else
+                        {
-                {
+                            if ((bool)m_FieldMap[name].GetValue(es))
-                    cmd.Parameters.AddWithValue("?" + name, m_FieldMap[name].GetValue(es).ToString());
+                                cmd.Parameters.AddWithValue("?" + name, "1");
+                            else
+                                cmd.Parameters.AddWithValue("?" + name, "0");
+                        }
+                        else
+                        {
+                            cmd.Parameters.AddWithValue("?" + name, m_FieldMap[name].GetValue(es).ToString());
+                        }
+                    }
+
+                    cmd.ExecuteNonQuery();
                 }
             }
 
-            cmd.ExecuteNonQuery();
-
             SaveBanList(es);
             SaveUUIDList(es.EstateID, "estate_managers", es.EstateManagers);
             SaveUUIDList(es.EstateID, "estate_users", es.EstateAccess);
@@ -298,77 +282,89 @@ namespace OpenSim.Data.MySQL
         {
             es.ClearBans();
 
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            MySqlCommand cmd = m_connection.CreateCommand();
-
-            cmd.CommandText = "select bannedUUID from estateban where EstateID = ?EstateID";
-            cmd.Parameters.AddWithValue("?EstateID", es.EstateID);
-
-            IDataReader r = cmd.ExecuteReader();
-
-            while (r.Read())
             {
-                EstateBan eb = new EstateBan();
+                dbcon.Open();
 
-                UUID uuid = new UUID();
+                using (MySqlCommand cmd = dbcon.CreateCommand())
-                UUID.TryParse(r["bannedUUID"].ToString(), out uuid);
+                {
+                    cmd.CommandText = "select bannedUUID from estateban where EstateID = ?EstateID";
+                    cmd.Parameters.AddWithValue("?EstateID", es.EstateID);
 
-                eb.BannedUserID = uuid;
+                    using (IDataReader r = cmd.ExecuteReader())
-                eb.BannedHostAddress = "0.0.0.0";
+                    {
-                eb.BannedHostIPMask = "0.0.0.0";
+                        while (r.Read())
-                es.AddBan(eb);
+                        {
+                            EstateBan eb = new EstateBan();
+
+                            UUID uuid = new UUID();
+                            UUID.TryParse(r["bannedUUID"].ToString(), out uuid);
+
+                            eb.BannedUserID = uuid;
+                            eb.BannedHostAddress = "0.0.0.0";
+                            eb.BannedHostIPMask = "0.0.0.0";
+                            es.AddBan(eb);
+                        }
+                    }
+                }
             }
-            r.Close();
         }
 
         private void SaveBanList(EstateSettings es)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            MySqlCommand cmd = m_connection.CreateCommand();
-
-            cmd.CommandText = "delete from estateban where EstateID = ?EstateID";
-            cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
-
-            cmd.ExecuteNonQuery();
-
-            cmd.Parameters.Clear();
-
-            cmd.CommandText = "insert into estateban (EstateID, bannedUUID, bannedIp, bannedIpHostMask, bannedNameMask) values ( ?EstateID, ?bannedUUID, '', '', '' )";
-
-            foreach (EstateBan b in es.EstateBans)
             {
-                cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
+                dbcon.Open();
-                cmd.Parameters.AddWithValue("?bannedUUID", b.BannedUserID.ToString());
 
-                cmd.ExecuteNonQuery();
+                using (MySqlCommand cmd = dbcon.CreateCommand())
-                cmd.Parameters.Clear();
+                {
+                    cmd.CommandText = "delete from estateban where EstateID = ?EstateID";
+                    cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
+
+                    cmd.ExecuteNonQuery();
+
+                    cmd.Parameters.Clear();
+
+                    cmd.CommandText = "insert into estateban (EstateID, bannedUUID, bannedIp, bannedIpHostMask, bannedNameMask) values ( ?EstateID, ?bannedUUID, '', '', '' )";
+
+                    foreach (EstateBan b in es.EstateBans)
+                    {
+                        cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
+                        cmd.Parameters.AddWithValue("?bannedUUID", b.BannedUserID.ToString());
+
+                        cmd.ExecuteNonQuery();
+                        cmd.Parameters.Clear();
+                    }
+                }
             }
         }
 
         void SaveUUIDList(uint EstateID, string table, UUID[] data)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            MySqlCommand cmd = m_connection.CreateCommand();
-
-            cmd.CommandText = "delete from " + table + " where EstateID = ?EstateID";
-            cmd.Parameters.AddWithValue("?EstateID", EstateID.ToString());
-
-            cmd.ExecuteNonQuery();
-
-            cmd.Parameters.Clear();
-
-            cmd.CommandText = "insert into " + table + " (EstateID, uuid) values ( ?EstateID, ?uuid )";
-
-            foreach (UUID uuid in data)
             {
-                cmd.Parameters.AddWithValue("?EstateID", EstateID.ToString());
+                dbcon.Open();
-                cmd.Parameters.AddWithValue("?uuid", uuid.ToString());
 
-                cmd.ExecuteNonQuery();
+                using (MySqlCommand cmd = dbcon.CreateCommand())
-                cmd.Parameters.Clear();
+                {
+                    cmd.CommandText = "delete from " + table + " where EstateID = ?EstateID";
+                    cmd.Parameters.AddWithValue("?EstateID", EstateID.ToString());
+
+                    cmd.ExecuteNonQuery();
+
+                    cmd.Parameters.Clear();
+
+                    cmd.CommandText = "insert into " + table + " (EstateID, uuid) values ( ?EstateID, ?uuid )";
+
+                    foreach (UUID uuid in data)
+                    {
+                        cmd.Parameters.AddWithValue("?EstateID", EstateID.ToString());
+                        cmd.Parameters.AddWithValue("?uuid", uuid.ToString());
+
+                        cmd.ExecuteNonQuery();
+                        cmd.Parameters.Clear();
+                    }
+                }
             }
         }
 
@@ -376,25 +372,29 @@ namespace OpenSim.Data.MySQL
         {
             List<UUID> uuids = new List<UUID>();
 
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            MySqlCommand cmd = m_connection.CreateCommand();
-
-            cmd.CommandText = "select uuid from " + table + " where EstateID = ?EstateID";
-            cmd.Parameters.AddWithValue("?EstateID", EstateID);
-
-            IDataReader r = cmd.ExecuteReader();
-
-            while (r.Read())
             {
-                // EstateBan eb = new EstateBan();
+                dbcon.Open();
 
-                UUID uuid = new UUID();
+                using (MySqlCommand cmd = dbcon.CreateCommand())
-                UUID.TryParse(r["uuid"].ToString(), out uuid);
+                {
+                    cmd.CommandText = "select uuid from " + table + " where EstateID = ?EstateID";
+                    cmd.Parameters.AddWithValue("?EstateID", EstateID);
 
-                uuids.Add(uuid);
+                    using (IDataReader r = cmd.ExecuteReader())
+                    {
+                        while (r.Read())
+                        {
+                            // EstateBan eb = new EstateBan();
+
+                            UUID uuid = new UUID();
+                            UUID.TryParse(r["uuid"].ToString(), out uuid);
+
+                            uuids.Add(uuid);
+                        }
+                    }
+                }
             }
-            r.Close();
 
             return uuids.ToArray();
         }

OpenSim/Data/MySQL/MySQLFramework.cs

@@ -40,12 +40,16 @@ namespace OpenSim.Data.MySQL
     /// </summary>
     public class MySqlFramework
     {
-        protected MySqlConnection m_Connection;
+        private static readonly log4net.ILog m_log =
+                log4net.LogManager.GetLogger(
+                System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+
+        protected string m_connectionString;
+        protected object m_dbLock = new object();
 
         protected MySqlFramework(string connectionString)
         {
-            m_Connection = new MySqlConnection(connectionString);
+            m_connectionString = connectionString;
-            m_Connection.Open();
         }
 
         //////////////////////////////////////////////////////////////
@@ -55,64 +59,24 @@ namespace OpenSim.Data.MySQL
         //
         protected int ExecuteNonQuery(MySqlCommand cmd)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                cmd.Connection = m_Connection;
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-                bool errorSeen = false;
-
-                while (true)
                 {
+                    dbcon.Open();
+                    cmd.Connection = dbcon;
+
                     try
                     {
                         return cmd.ExecuteNonQuery();
                     }
-                    catch (MySqlException e)
-                    {
-                        if (errorSeen)
-                            throw;
-
-                        // This is "Server has gone away" and "Server lost"
-                        //
-                        if (e.Number == 2006 || e.Number == 2013)
-                        {
-                            errorSeen = true;
-
-                            m_Connection.Close();
-                            MySqlConnection newConnection =
-                                    (MySqlConnection)((ICloneable)m_Connection).Clone();
-                            m_Connection.Dispose();
-                            m_Connection = newConnection;
-                            m_Connection.Open();
-
-                            cmd.Connection = m_Connection;
-                        }
-                        else
-                            throw;
-                    }
                     catch (Exception e)
                     {
+                        m_log.Error(e.Message, e);
                         return 0;
                     }
                 }
             }
         }
-        
-        protected IDataReader ExecuteReader(MySqlCommand cmd)
-        {
-            MySqlConnection newConnection =
-                    (MySqlConnection)((ICloneable)m_Connection).Clone();
-            newConnection.Open();
-
-            cmd.Connection = newConnection;
-            return cmd.ExecuteReader();
-        }
-
-        protected void CloseReaderCommand(MySqlCommand cmd)
-        {
-            cmd.Connection.Close();
-            cmd.Connection.Dispose();
-            cmd.Dispose();
-        }
     }
 }

OpenSim/Data/MySQL/MySQLGenericTableHandler.cs

@@ -54,12 +54,16 @@ namespace OpenSim.Data.MySQL
                 string realm, string storeName) : base(connectionString)
         {
             m_Realm = realm;
+            m_connectionString = connectionString;
+            
             if (storeName != String.Empty)
             {
-                Assembly assem = GetType().Assembly;
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
+                {
-                Migration m = new Migration(m_Connection, assem, storeName);
+                    dbcon.Open();
-                m.Update();
+                    Migration m = new Migration(dbcon, GetType().Assembly, storeName);
+                    m.Update();
+                }
             }
 
             Type t = typeof(T);
@@ -107,147 +111,160 @@ namespace OpenSim.Data.MySQL
 
             List<string> terms = new List<string>();
 
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
-
-            for (int i = 0 ; i < fields.Length ; i++)
             {
-                cmd.Parameters.AddWithValue(fields[i], keys[i]);
+                for (int i = 0 ; i < fields.Length ; i++)
-                terms.Add("`" + fields[i] + "` = ?" + fields[i]);
+                {
+                    cmd.Parameters.AddWithValue(fields[i], keys[i]);
+                    terms.Add("`" + fields[i] + "` = ?" + fields[i]);
+                }
+
+                string where = String.Join(" and ", terms.ToArray());
+
+                string query = String.Format("select * from {0} where {1}",
+                                             m_Realm, where);
+
+                cmd.CommandText = query;
+                
+                return DoQuery(cmd);
             }
-
-            string where = String.Join(" and ", terms.ToArray());
-
-            string query = String.Format("select * from {0} where {1}",
-                    m_Realm, where);
-
-            cmd.CommandText = query;
-
-            return DoQuery(cmd);
         }
 
         protected T[] DoQuery(MySqlCommand cmd)
         {
-            IDataReader reader = ExecuteReader(cmd);
-            if (reader == null)
-                return new T[0];
-
-            CheckColumnNames(reader);
-
             List<T> result = new List<T>();
 
-            while (reader.Read())
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
             {
-                T row = new T();
+                dbcon.Open();
+                cmd.Connection = dbcon;
 
-                foreach (string name in m_Fields.Keys)
+                using (IDataReader reader = cmd.ExecuteReader())
                 {
-                    if (m_Fields[name].GetValue(row) is bool)
+                    if (reader == null)
-                    {
+                        return new T[0];
-                        int v = Convert.ToInt32(reader[name]);
-                        m_Fields[name].SetValue(row, v != 0 ? true : false);
-                    }
-                    else if (m_Fields[name].GetValue(row) is UUID)
-                    {
-                        UUID uuid = UUID.Zero;
 
-                        UUID.TryParse(reader[name].ToString(), out uuid);
+                    CheckColumnNames(reader);
-                        m_Fields[name].SetValue(row, uuid);
+
-                    }
+                    while (reader.Read())
-                    else if (m_Fields[name].GetValue(row) is int)
                     {
-                        int v = Convert.ToInt32(reader[name]);
+                        T row = new T();
-                        m_Fields[name].SetValue(row, v);
+
-                    }
+                        foreach (string name in m_Fields.Keys)
-                    else
+                        {
-                    {
+                            if (m_Fields[name].GetValue(row) is bool)
-                        m_Fields[name].SetValue(row, reader[name]);
+                            {
+                                int v = Convert.ToInt32(reader[name]);
+                                m_Fields[name].SetValue(row, v != 0 ? true : false);
+                            }
+                            else if (m_Fields[name].GetValue(row) is UUID)
+                            {
+                                UUID uuid = UUID.Zero;
+
+                                UUID.TryParse(reader[name].ToString(), out uuid);
+                                m_Fields[name].SetValue(row, uuid);
+                            }
+                            else if (m_Fields[name].GetValue(row) is int)
+                            {
+                                int v = Convert.ToInt32(reader[name]);
+                                m_Fields[name].SetValue(row, v);
+                            }
+                            else
+                            {
+                                m_Fields[name].SetValue(row, reader[name]);
+                            }
+                        }
+                
+                        if (m_DataField != null)
+                        {
+                            Dictionary<string, string> data =
+                                new Dictionary<string, string>();
+
+                            foreach (string col in m_ColumnNames)
+                            {
+                                data[col] = reader[col].ToString();
+                                if (data[col] == null)
+                                    data[col] = String.Empty;
+                            }
+
+                            m_DataField.SetValue(row, data);
+                        }
+
+                        result.Add(row);
                     }
                 }
-                
-                if (m_DataField != null)
-                {
-                    Dictionary<string, string> data =
-                            new Dictionary<string, string>();
-
-                    foreach (string col in m_ColumnNames)
-                    {
-                        data[col] = reader[col].ToString();
-                        if (data[col] == null)
-                            data[col] = String.Empty;
-                    }
-
-                    m_DataField.SetValue(row, data);
-                }
-
-                result.Add(row);
             }
 
-            CloseReaderCommand(cmd);
-
             return result.ToArray();
         }
 
         public T[] Get(string where)
         {
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
             
-            string query = String.Format("select * from {0} where {1}",
+                string query = String.Format("select * from {0} where {1}",
-                    m_Realm, where);
+                                             m_Realm, where);
                 
-            cmd.CommandText = query;
+                cmd.CommandText = query;
                 
-            return DoQuery(cmd);
+                return DoQuery(cmd);
+            }
         }
 
         public bool Store(T row)
         {
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
-
-            string query = "";
-            List<String> names = new List<String>();
-            List<String> values = new List<String>();
-
-            foreach (FieldInfo fi in m_Fields.Values)
             {
-                names.Add(fi.Name);
-                values.Add("?" + fi.Name);
-                cmd.Parameters.AddWithValue(fi.Name, fi.GetValue(row).ToString());
-            }
 
-            if (m_DataField != null)
+                string query = "";
-            {
+                List<String> names = new List<String>();
-                Dictionary<string, string> data =
+                List<String> values = new List<String>();
+
+                foreach (FieldInfo fi in m_Fields.Values)
+                {
+                    names.Add(fi.Name);
+                    values.Add("?" + fi.Name);
+                    cmd.Parameters.AddWithValue(fi.Name, fi.GetValue(row).ToString());
+                }
+
+                if (m_DataField != null)
+                {
+                    Dictionary<string, string> data =
                         (Dictionary<string, string>)m_DataField.GetValue(row);
 
-                foreach (KeyValuePair<string, string> kvp in data)
+                    foreach (KeyValuePair<string, string> kvp in data)
-                {
+                    {
-                    names.Add(kvp.Key);
+                        names.Add(kvp.Key);
-                    values.Add("?" + kvp.Key);
+                        values.Add("?" + kvp.Key);
-                    cmd.Parameters.AddWithValue("?" + kvp.Key, kvp.Value);
+                        cmd.Parameters.AddWithValue("?" + kvp.Key, kvp.Value);
+                    }
                 }
+
+                query = String.Format("replace into {0} (`", m_Realm) + String.Join("`,`", names.ToArray()) + "`) values (" + String.Join(",", values.ToArray()) + ")";
+
+                cmd.CommandText = query;
+
+                if (ExecuteNonQuery(cmd) > 0)
+                    return true;
+
+                return false;
             }
-
-            query = String.Format("replace into {0} (`", m_Realm) + String.Join("`,`", names.ToArray()) + "`) values (" + String.Join(",", values.ToArray()) + ")";
-
-            cmd.CommandText = query;
-
-            if (ExecuteNonQuery(cmd) > 0)
-                return true;
-
-            return false;
         }
 
         public bool Delete(string field, string val)
         {
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
 
-            cmd.CommandText = String.Format("delete from {0} where `{1}` = ?{1}", m_Realm, field);
+                cmd.CommandText = String.Format("delete from {0} where `{1}` = ?{1}", m_Realm, field);
-            cmd.Parameters.AddWithValue(field, val);
+                cmd.Parameters.AddWithValue(field, val);
 
-            if (ExecuteNonQuery(cmd) > 0)
+                if (ExecuteNonQuery(cmd) > 0)
-                return true;
+                    return true;
 
-            return false;
+                return false;
+            }
         }
     }
 }

OpenSim/Data/MySQL/MySQLGridData.cs

@@ -31,6 +31,7 @@ using System.Data;
 using System.Reflection;
 using System.Threading;
 using log4net;
+using MySql.Data.MySqlClient;
 using OpenMetaverse;
 using OpenSim.Framework;
 
@@ -43,49 +44,9 @@ namespace OpenSim.Data.MySQL
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        /// <summary>
+        private MySQLManager m_database;
-        /// MySQL Database Manager
+        private object m_dbLock = new object();
-        /// </summary>
+        private string m_connectionString;
-        private MySQLManager database;
-
-
-        /// <summary>
-        /// Better DB manager. Swap-in replacement too.
-        /// </summary>
-        public Dictionary<int, MySQLSuperManager> m_dbconnections = new Dictionary<int, MySQLSuperManager>();
-
-        public int m_maxConnections = 10;
-        public int m_lastConnect;
-
-        public MySQLSuperManager GetLockedConnection()
-        {
-            int lockedCons = 0;
-            while (true)
-            {
-                m_lastConnect++;
-
-                // Overflow protection
-                if (m_lastConnect == int.MaxValue)
-                    m_lastConnect = 0;
-
-                MySQLSuperManager x = m_dbconnections[m_lastConnect % m_maxConnections];
-                if (!x.Locked)
-                {
-                    x.GetLock();
-                    return x;
-                }
-
-                lockedCons++;
-                if (lockedCons > m_maxConnections)
-                {
-                    lockedCons = 0;
-                    Thread.Sleep(1000); // Wait some time before searching them again.
-                    m_log.Debug(
-                        "WARNING: All threads are in use. Probable cause: Something didnt release a mutex properly, or high volume of requests inbound.");
-                }
-            }
-        }
-
 
         override public void Initialise()
         {
@@ -106,49 +67,17 @@ namespace OpenSim.Data.MySQL
         /// <param name="connect">connect string.</param>
         override public void Initialise(string connect)
         {
-            if (connect != String.Empty)
+            m_connectionString = connect;
-            {
+            m_database = new MySQLManager(connect);
-                database = new MySQLManager(connect);
-
-                m_log.Info("Creating " + m_maxConnections + " DB connections...");
-                for (int i = 0; i < m_maxConnections; i++)
-                {
-                    m_log.Info("Connecting to DB... [" + i + "]");
-                    MySQLSuperManager msm = new MySQLSuperManager();
-                    msm.Manager = new MySQLManager(connect);
-                    m_dbconnections.Add(i, msm);
-                }
-
-            }
-            else
-            {
-                m_log.Warn("Using deprecated mysql_connection.ini.  Please update database_connect in GridServer_Config.xml and we'll use that instead");
-                IniFile GridDataMySqlFile = new IniFile("mysql_connection.ini");
-                string settingHostname = GridDataMySqlFile.ParseFileReadValue("hostname");
-                string settingDatabase = GridDataMySqlFile.ParseFileReadValue("database");
-                string settingUsername = GridDataMySqlFile.ParseFileReadValue("username");
-                string settingPassword = GridDataMySqlFile.ParseFileReadValue("password");
-                string settingPooling = GridDataMySqlFile.ParseFileReadValue("pooling");
-                string settingPort = GridDataMySqlFile.ParseFileReadValue("port");
-
-                database = new MySQLManager(settingHostname, settingDatabase, settingUsername, settingPassword,
-                                            settingPooling, settingPort);
-
-                m_log.Info("Creating " + m_maxConnections + " DB connections...");
-                for (int i = 0; i < m_maxConnections; i++)
-                {
-                    m_log.Info("Connecting to DB... [" + i + "]");
-                    MySQLSuperManager msm = new MySQLSuperManager();
-                    msm.Manager = new MySQLManager(settingHostname, settingDatabase, settingUsername, settingPassword,
-                                                   settingPooling, settingPort);
-                    m_dbconnections.Add(i, msm);
-                }
-            }
 
             // This actually does the roll forward assembly stuff
             Assembly assem = GetType().Assembly;
-            Migration m = new Migration(database.Connection, assem, "GridStore");
+
-            m.Update();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                Migration m = new Migration(dbcon, assem, "GridStore");
+                m.Update();
+            }
         }
 
         /// <summary>
@@ -156,7 +85,6 @@ namespace OpenSim.Data.MySQL
         /// </summary>
         override public void Dispose()
         {
-            database.Close();
         }
 
         /// <summary>
@@ -187,8 +115,6 @@ namespace OpenSim.Data.MySQL
         /// <returns>Array of sim profiles</returns>
         override public RegionProfileData[] GetProfilesInRange(uint xmin, uint ymin, uint xmax, uint ymax)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
@@ -197,35 +123,33 @@ namespace OpenSim.Data.MySQL
                     param["?xmax"] = xmax.ToString();
                     param["?ymax"] = ymax.ToString();
 
-                    IDbCommand result =
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                        dbm.Manager.Query(
-                            "SELECT * FROM regions WHERE locX >= ?xmin AND locX <= ?xmax AND locY >= ?ymin AND locY <= ?ymax",
-                            param);
-                    IDataReader reader = result.ExecuteReader();
-
-                    RegionProfileData row;
-
-                    List<RegionProfileData> rows = new List<RegionProfileData>();
-
-                    while ((row = dbm.Manager.readSimRow(reader)) != null)
                     {
-                        rows.Add(row);
+                        dbcon.Open();
-                    }
-                    reader.Close();
-                    result.Dispose();
 
-                    return rows.ToArray();
+                        using (IDbCommand result = m_database.Query(dbcon,
+                                "SELECT * FROM regions WHERE locX >= ?xmin AND locX <= ?xmax AND locY >= ?ymin AND locY <= ?ymax",
+                                param))
+                        {
+                            using (IDataReader reader = result.ExecuteReader())
+                            {
+                                RegionProfileData row;
+
+                                List<RegionProfileData> rows = new List<RegionProfileData>();
+
+                                while ((row = m_database.readSimRow(reader)) != null)
+                                    rows.Add(row);
+
+                                return rows.ToArray();
+                            }
+                        }
+                    }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -236,42 +160,38 @@ namespace OpenSim.Data.MySQL
         /// <returns>A list of sim profiles</returns>
         override public List<RegionProfileData> GetRegionsByName(string namePrefix, uint maxNum)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
                 param["?name"] = namePrefix + "%";
 
-                IDbCommand result =
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    dbm.Manager.Query(
-                        "SELECT * FROM regions WHERE regionName LIKE ?name",
-                        param);
-                IDataReader reader = result.ExecuteReader();
-
-                RegionProfileData row;
-
-                List<RegionProfileData> rows = new List<RegionProfileData>();
-
-                while (rows.Count < maxNum && (row = dbm.Manager.readSimRow(reader)) != null)
                 {
-                    rows.Add(row);
+                    dbcon.Open();
-                }
-                reader.Close();
-                result.Dispose();
 
-                return rows;
+                    using (IDbCommand result = m_database.Query(dbcon,
+                        "SELECT * FROM regions WHERE regionName LIKE ?name",
+                        param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            RegionProfileData row;
+
+                            List<RegionProfileData> rows = new List<RegionProfileData>();
+
+                            while (rows.Count < maxNum && (row = m_database.readSimRow(reader)) != null)
+                                rows.Add(row);
+
+                            return rows;
+                        }
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -281,32 +201,30 @@ namespace OpenSim.Data.MySQL
         /// <returns>Sim profile</returns>
         override public RegionProfileData GetProfileByHandle(ulong handle)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
-                    param["?handle"] = handle.ToString();
+                param["?handle"] = handle.ToString();
 
-                    IDbCommand result = dbm.Manager.Query("SELECT * FROM regions WHERE regionHandle = ?handle", param);
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    IDataReader reader = result.ExecuteReader();
+                {
+                    dbcon.Open();
 
-                    RegionProfileData row = dbm.Manager.readSimRow(reader);
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM regions WHERE regionHandle = ?handle", param))
-                    reader.Close();
+                    {
-                    result.Dispose();
+                        using (IDataReader reader = result.ExecuteReader())
-
+                        {
-                    return row;
+                            RegionProfileData row = m_database.readSimRow(reader);
+                            return row;
+                        }
+                    }
                 }
+            }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -316,30 +234,29 @@ namespace OpenSim.Data.MySQL
         /// <returns>The sim profile</returns>
         override public RegionProfileData GetProfileByUUID(UUID uuid)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
-                    param["?uuid"] = uuid.ToString();
+                param["?uuid"] = uuid.ToString();
 
-                    IDbCommand result = dbm.Manager.Query("SELECT * FROM regions WHERE uuid = ?uuid", param);
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    IDataReader reader = result.ExecuteReader();
+                {
+                    dbcon.Open();
 
-                    RegionProfileData row = dbm.Manager.readSimRow(reader);
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM regions WHERE uuid = ?uuid", param))
-                    reader.Close();
+                    {
-                    result.Dispose();
+                        using (IDataReader reader = result.ExecuteReader())
-
+                        {
-                    return row;
+                            RegionProfileData row = m_database.readSimRow(reader);
+                            return row;
+                        }
+                    }
                 }
+            }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
-            } finally
-            {
-                dbm.Release();
             }
         }
 
@@ -351,37 +268,36 @@ namespace OpenSim.Data.MySQL
         {
             if (regionName.Length > 2)
             {
-                MySQLSuperManager dbm = GetLockedConnection();
-
                 try
                 {
                     Dictionary<string, object> param = new Dictionary<string, object>();
                     // Add % because this is a like query.
                     param["?regionName"] = regionName + "%";
-                    // Order by statement will return shorter matches first.  Only returns one record or no record.
+
-                    IDbCommand result =
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                        dbm.Manager.Query(
+                    {
+                        dbcon.Open();
+
+                        // Order by statement will return shorter matches first.  Only returns one record or no record.
+                        using (IDbCommand result = m_database.Query(dbcon,
                             "SELECT * FROM regions WHERE regionName like ?regionName order by LENGTH(regionName) asc LIMIT 1",
-                            param);
+                            param))
-                    IDataReader reader = result.ExecuteReader();
+                        {
-
+                            using (IDataReader reader = result.ExecuteReader())
-                    RegionProfileData row = dbm.Manager.readSimRow(reader);
+                            {
-                    reader.Close();
+                                RegionProfileData row = m_database.readSimRow(reader);
-                    result.Dispose();
+                                return row;
-
+                            }
-                    return row;
+                        }
+                    }
                 }
                 catch (Exception e)
                 {
-                    dbm.Manager.Reconnect();
+                    m_log.Error(e.Message, e);
-                    m_log.Error(e.ToString());
                     return null;
                 }
-                finally
-                {
-                    dbm.Release();
-                }
             }
+
             m_log.Error("[GRID DB]: Searched for a Region Name shorter then 3 characters");
             return null;
         }
@@ -393,17 +309,16 @@ namespace OpenSim.Data.MySQL
         /// <returns>Successful?</returns>
         override public DataResponse StoreProfile(RegionProfileData profile)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
+            try
-            try {
-                if (dbm.Manager.insertRegion(profile))
-                {
-                    return DataResponse.RESPONSE_OK;
-                }
-                return DataResponse.RESPONSE_ERROR;
-            }
-            finally
             {
-                dbm.Release();
+                if (m_database.insertRegion(profile))
+                    return DataResponse.RESPONSE_OK;
+                else
+                    return DataResponse.RESPONSE_ERROR;
+            }
+            catch
+            {
+                return DataResponse.RESPONSE_ERROR;
             }
         }
 
@@ -415,18 +330,16 @@ namespace OpenSim.Data.MySQL
         //public DataResponse DeleteProfile(RegionProfileData profile)
         override public DataResponse DeleteProfile(string uuid)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
+            try
-
-
-            try {
-                if (dbm.Manager.deleteRegion(uuid))
-                {
-                    return DataResponse.RESPONSE_OK;
-                }
-                return DataResponse.RESPONSE_ERROR;
-            } finally
             {
-                dbm.Release();
+                if (m_database.deleteRegion(uuid))
+                    return DataResponse.RESPONSE_OK;
+                else
+                    return DataResponse.RESPONSE_ERROR;
+            }
+            catch
+            {
+                return DataResponse.RESPONSE_ERROR;
             }
         }
 
@@ -477,33 +390,32 @@ namespace OpenSim.Data.MySQL
         /// <returns></returns>
         override public ReservationData GetReservationAtPoint(uint x, uint y)
         {
-            MySQLSuperManager dbm = GetLockedConnection();
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
-                    param["?x"] = x.ToString();
+                param["?x"] = x.ToString();
-                    param["?y"] = y.ToString();
+                param["?y"] = y.ToString();
-                    IDbCommand result =
-                        dbm.Manager.Query(
-                            "SELECT * FROM reservations WHERE resXMin <= ?x AND resXMax >= ?x AND resYMin <= ?y AND resYMax >= ?y",
-                            param);
-                    IDataReader reader = result.ExecuteReader();
 
-                    ReservationData row = dbm.Manager.readReservationRow(reader);
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    reader.Close();
+                {
-                    result.Dispose();
+                    dbcon.Open();
 
-                    return row;
+                    using (IDbCommand result = m_database.Query(dbcon,
+                        "SELECT * FROM reservations WHERE resXMin <= ?x AND resXMax >= ?x AND resYMin <= ?y AND resYMax >= ?y",
+                        param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            ReservationData row = m_database.readReservationRow(reader);
+                            return row;
+                        }
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
-            } finally
-            {
-                dbm.Release();
             }
         }
     }

OpenSim/Data/MySQL/MySQLLogData.cs

@@ -79,14 +79,19 @@ namespace OpenSim.Data.MySQL
 
             // This actually does the roll forward assembly stuff
             Assembly assem = GetType().Assembly;
-            Migration m = new Migration(database.Connection, assem, "LogStore");
 
-            // TODO: After rev 6000, remove this.  People should have
+            using (MySql.Data.MySqlClient.MySqlConnection dbcon = new MySql.Data.MySqlClient.MySqlConnection(connect))
-            // been rolled onto the new migration code by then.
+            {
-            TestTables(m);
+                dbcon.Open();
 
-            m.Update();
+                Migration m = new Migration(dbcon, assem, "LogStore");
 
+                // TODO: After rev 6000, remove this.  People should have
+                // been rolled onto the new migration code by then.
+                TestTables(m);
+
+                m.Update();
+            }
         }
 
         /// <summary></summary>
@@ -128,7 +133,6 @@ namespace OpenSim.Data.MySQL
             }
             catch
             {
-                database.Reconnect();
             }
         }
 

OpenSim/Data/MySQL/MySQLManager.cs

@@ -45,16 +45,13 @@ namespace OpenSim.Data.MySQL
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        /// <summary>
-        /// The database connection object
-        /// </summary>
-        private MySqlConnection dbcon;
-
         /// <summary>
         /// Connection string for ADO.net
         /// </summary>
         private string connectionString;
 
+        private object m_dbLock = new object();
+
         private const string m_waitTimeoutSelect = "select @@wait_timeout";
 
         /// <summary>
@@ -109,11 +106,11 @@ namespace OpenSim.Data.MySQL
             try
             {
                 connectionString = connect;
-                dbcon = new MySqlConnection(connectionString);
+                //dbcon = new MySqlConnection(connectionString);
 
                 try
                 {
-                    dbcon.Open();
+                    //dbcon.Open();
                 }
                 catch(Exception e)
                 {
@@ -134,18 +131,21 @@ namespace OpenSim.Data.MySQL
         /// </summary>
         protected void GetWaitTimeout()
         {
-            MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect, dbcon);
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-
-            using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
             {
-                if (dbReader.Read())
+                dbcon.Open();
-                {
-                    m_waitTimeout
-                        = Convert.ToInt32(dbReader["@@wait_timeout"]) * TimeSpan.TicksPerSecond + m_waitTimeoutLeeway;
-                }
 
-                dbReader.Close();
+                using (MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect, dbcon))
-                cmd.Dispose();
+                {
+                    using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
+                    {
+                        if (dbReader.Read())
+                        {
+                            m_waitTimeout
+                                = Convert.ToInt32(dbReader["@@wait_timeout"]) * TimeSpan.TicksPerSecond + m_waitTimeoutLeeway;
+                        }
+                    }
+                }
             }
 
             m_lastConnectionUse = DateTime.Now.Ticks;
@@ -154,66 +154,9 @@ namespace OpenSim.Data.MySQL
                 "[REGION DB]: Connection wait timeout {0} seconds", m_waitTimeout / TimeSpan.TicksPerSecond);
         }
 
-        /// <summary>
+        public string ConnectionString
-        /// Should be called before any db operation.  This checks to see if the connection has not timed out
-        /// </summary>
-        public void CheckConnection()
         {
-            //m_log.Debug("[REGION DB]: Checking connection");
+            get { return connectionString; }
-
-            long timeNow = DateTime.Now.Ticks;
-            if (timeNow - m_lastConnectionUse > m_waitTimeout || dbcon.State != ConnectionState.Open)
-            {
-                m_log.DebugFormat("[REGION DB]: Database connection has gone away - reconnecting");
-                Reconnect();
-            }
-
-            // Strictly, we should set this after the actual db operation.  But it's more convenient to set here rather
-            // than require the code to call another method - the timeout leeway should be large enough to cover the
-            // inaccuracy.
-            m_lastConnectionUse = timeNow;
-        }
-
-        /// <summary>
-        /// Get the connection being used
-        /// </summary>
-        /// <returns>MySqlConnection Object</returns>
-        public MySqlConnection Connection
-        {
-            get { return dbcon; }
-        }
-
-        /// <summary>
-        /// Shuts down the database connection
-        /// </summary>
-        public void Close()
-        {
-            dbcon.Close();
-            dbcon = null;
-        }
-
-        /// <summary>
-        /// Reconnects to the database
-        /// </summary>
-        public void Reconnect()
-        {
-            m_log.Info("[REGION DB] Reconnecting database");
-
-            lock (dbcon)
-            {
-                try
-                {
-                    // Close the DB connection
-                    dbcon.Close();
-                    // Try reopen it
-                    dbcon = new MySqlConnection(connectionString);
-                    dbcon.Open();
-                }
-                catch (Exception e)
-                {
-                    m_log.Error("Unable to reconnect to database " + e.ToString());
-                }
-            }
         }
 
         /// <summary>
@@ -264,9 +207,13 @@ namespace OpenSim.Data.MySQL
         /// <param name="name">name of embedded resource</param>
         public void ExecuteResourceSql(string name)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-            MySqlCommand cmd = new MySqlCommand(getResourceString(name), dbcon);
+            {
-            cmd.ExecuteNonQuery();
+                dbcon.Open();
+
+                MySqlCommand cmd = new MySqlCommand(getResourceString(name), dbcon);
+                cmd.ExecuteNonQuery();
+            }
         }
 
         /// <summary>
@@ -275,22 +222,29 @@ namespace OpenSim.Data.MySQL
         /// <param name="sql">sql string to execute</param>
         public void ExecuteSql(string sql)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-            MySqlCommand cmd = new MySqlCommand(sql, dbcon);
+            {
-            cmd.ExecuteNonQuery();
+                dbcon.Open();
+
+                MySqlCommand cmd = new MySqlCommand(sql, dbcon);
+                cmd.ExecuteNonQuery();
+            }
         }
 
         public void ExecuteParameterizedSql(string sql, Dictionary<string, string> parameters)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-
-            MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand();
-            cmd.CommandText = sql;
-            foreach (KeyValuePair<string, string> param in parameters)
             {
-                cmd.Parameters.AddWithValue(param.Key, param.Value);
+                dbcon.Open();
+
+                MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand();
+                cmd.CommandText = sql;
+                foreach (KeyValuePair<string, string> param in parameters)
+                {
+                    cmd.Parameters.AddWithValue(param.Key, param.Value);
+                }
+                cmd.ExecuteNonQuery();
             }
-            cmd.ExecuteNonQuery();
         }
 
         /// <summary>
@@ -299,35 +253,37 @@ namespace OpenSim.Data.MySQL
         /// <param name="tableList"></param>
         public void GetTableVersion(Dictionary<string, string> tableList)
         {
-            lock (dbcon)
+            lock (m_dbLock)
             {
-                CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-
-                MySqlCommand tablesCmd =
-                    new MySqlCommand(
-                        "SELECT TABLE_NAME, TABLE_COMMENT FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=?dbname",
-                        dbcon);
-                tablesCmd.Parameters.AddWithValue("?dbname", dbcon.Database);
-
-                using (MySqlDataReader tables = tablesCmd.ExecuteReader())
                 {
-                    while (tables.Read())
+                    dbcon.Open();
+
+                    using (MySqlCommand tablesCmd = new MySqlCommand(
+                        "SELECT TABLE_NAME, TABLE_COMMENT FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=?dbname", dbcon))
                     {
-                        try
+                        tablesCmd.Parameters.AddWithValue("?dbname", dbcon.Database);
+
+                        using (MySqlDataReader tables = tablesCmd.ExecuteReader())
                         {
-                            string tableName = (string) tables["TABLE_NAME"];
+                            while (tables.Read())
-                            string comment = (string) tables["TABLE_COMMENT"];
-                            if (tableList.ContainsKey(tableName))
                             {
-                                tableList[tableName] = comment;
+                                try
+                                {
+                                    string tableName = (string)tables["TABLE_NAME"];
+                                    string comment = (string)tables["TABLE_COMMENT"];
+                                    if (tableList.ContainsKey(tableName))
+                                    {
+                                        tableList[tableName] = comment;
+                                    }
+                                }
+                                catch (Exception e)
+                                {
+                                    m_log.Error(e.Message, e);
+                                }
                             }
                         }
-                        catch (Exception e)
-                        {
-                            m_log.Error(e.ToString());
-                        }
                     }
-                    tables.Close();
                 }
             }
         }
@@ -337,28 +293,27 @@ namespace OpenSim.Data.MySQL
         /// <summary>
         /// Runs a query with protection against SQL Injection by using parameterised input.
         /// </summary>
+        /// <param name="dbcon">Database connection</param>
         /// <param name="sql">The SQL string - replace any variables such as WHERE x = "y" with WHERE x = @y</param>
         /// <param name="parameters">The parameters - index so that @y is indexed as 'y'</param>
         /// <returns>A MySQL DB Command</returns>
-        public IDbCommand Query(string sql, Dictionary<string, object> parameters)
+        public IDbCommand Query(MySqlConnection dbcon, string sql, Dictionary<string, object> parameters)
         {
             try
             {
-                CheckConnection(); // Not sure if this one is necessary
+                MySqlCommand dbcommand = (MySqlCommand)dbcon.CreateCommand();
-
-                MySqlCommand dbcommand = (MySqlCommand) dbcon.CreateCommand();
                 dbcommand.CommandText = sql;
                 foreach (KeyValuePair<string, object> param in parameters)
                 {
                     dbcommand.Parameters.AddWithValue(param.Key, param.Value);
                 }
 
-                return (IDbCommand) dbcommand;
+                return (IDbCommand)dbcommand;
             }
             catch (Exception e)
             {
                 // Return null if it fails.
-                m_log.Error("Failed during Query generation: " + e.ToString());
+                m_log.Error("Failed during Query generation: " + e.Message, e);
                 return null;
             }
         }
@@ -694,8 +649,6 @@ namespace OpenSim.Data.MySQL
                 ret.Add(attachpoint, item);
             }
 
-            r.Close();
-
             return ret;
         }
 
@@ -727,12 +680,17 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
 
-                if (result.ExecuteNonQuery() == 1)
+                    IDbCommand result = Query(dbcon, sql, parameters);
-                    returnval = true;
 
-                result.Dispose();
+                    if (result.ExecuteNonQuery() == 1)
+                        returnval = true;
+
+                    result.Dispose();
+                }
             }
             catch (Exception e)
             {
@@ -828,12 +786,17 @@ namespace OpenSim.Data.MySQL
                 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
 
-                if (result.ExecuteNonQuery() == 1)
+                    IDbCommand result = Query(dbcon, sql, parameters);
-                    returnval = true;
 
-                result.Dispose();
+                    if (result.ExecuteNonQuery() == 1)
+                        returnval = true;
+
+                    result.Dispose();
+                }
             }
             catch (Exception e)
             {
@@ -927,12 +890,17 @@ namespace OpenSim.Data.MySQL
             bool returnval = false;
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
 
-                if (result.ExecuteNonQuery() == 1)
+                    IDbCommand result = Query(dbcon, sql, parameters);
-                    returnval = true;
 
-                result.Dispose();
+                    if (result.ExecuteNonQuery() == 1)
+                        returnval = true;
+
+                    result.Dispose();
+                }
             }
             catch (Exception e)
             {
@@ -1030,18 +998,23 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-
-                // int x;
-                // if ((x = result.ExecuteNonQuery()) > 0)
-                // {
-                //     returnval = true;
-                // }
-                if (result.ExecuteNonQuery() > 0)
                 {
-                    returnval = true;
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
+
+                    // int x;
+                    // if ((x = result.ExecuteNonQuery()) > 0)
+                    // {
+                    //     returnval = true;
+                    // }
+                    if (result.ExecuteNonQuery() > 0)
+                    {
+                        returnval = true;
+                    }
+                    result.Dispose();
                 }
-                result.Dispose();
             }
             catch (Exception e)
             {
@@ -1070,18 +1043,23 @@ namespace OpenSim.Data.MySQL
             {
                 parameters["?uuid"] = uuid;
 
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-
-                // int x;
-                // if ((x = result.ExecuteNonQuery()) > 0)
-                // {
-                //     returnval = true;
-                // }
-                if (result.ExecuteNonQuery() > 0)
                 {
-                    returnval = true;
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
+
+                    // int x;
+                    // if ((x = result.ExecuteNonQuery()) > 0)
+                    // {
+                    //     returnval = true;
+                    // }
+                    if (result.ExecuteNonQuery() > 0)
+                    {
+                        returnval = true;
+                    }
+                    result.Dispose();
                 }
-                result.Dispose();
             }
             catch (Exception e)
             {
@@ -1122,18 +1100,23 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-
-                // int x;
-                // if ((x = result.ExecuteNonQuery()) > 0)
-                // {
-                //     returnval = true;
-                // }
-                if (result.ExecuteNonQuery() > 0)
                 {
-                    returnval = true;
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
+
+                    // int x;
+                    // if ((x = result.ExecuteNonQuery()) > 0)
+                    // {
+                    //     returnval = true;
+                    // }
+                    if (result.ExecuteNonQuery() > 0)
+                    {
+                        returnval = true;
+                    }
+                    result.Dispose();
                 }
-                result.Dispose();
             }
             catch (Exception e)
             {
@@ -1167,45 +1150,51 @@ namespace OpenSim.Data.MySQL
             bool returnval = false;
 
             // we want to send in byte data, which means we can't just pass down strings
-            try {
+            try
-                MySqlCommand cmd = (MySqlCommand) dbcon.CreateCommand();
+            {
-                cmd.CommandText = sql;
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-                cmd.Parameters.AddWithValue("?owner", appearance.Owner.ToString());
+                {
-                cmd.Parameters.AddWithValue("?serial", appearance.Serial);
+                    dbcon.Open();
-                cmd.Parameters.AddWithValue("?visual_params", appearance.VisualParams);
-                cmd.Parameters.AddWithValue("?texture", appearance.Texture.GetBytes());
-                cmd.Parameters.AddWithValue("?avatar_height", appearance.AvatarHeight);
-                cmd.Parameters.AddWithValue("?body_item", appearance.BodyItem.ToString());
-                cmd.Parameters.AddWithValue("?body_asset", appearance.BodyAsset.ToString());
-                cmd.Parameters.AddWithValue("?skin_item", appearance.SkinItem.ToString());
-                cmd.Parameters.AddWithValue("?skin_asset", appearance.SkinAsset.ToString());
-                cmd.Parameters.AddWithValue("?hair_item", appearance.HairItem.ToString());
-                cmd.Parameters.AddWithValue("?hair_asset", appearance.HairAsset.ToString());
-                cmd.Parameters.AddWithValue("?eyes_item", appearance.EyesItem.ToString());
-                cmd.Parameters.AddWithValue("?eyes_asset", appearance.EyesAsset.ToString());
-                cmd.Parameters.AddWithValue("?shirt_item", appearance.ShirtItem.ToString());
-                cmd.Parameters.AddWithValue("?shirt_asset", appearance.ShirtAsset.ToString());
-                cmd.Parameters.AddWithValue("?pants_item", appearance.PantsItem.ToString());
-                cmd.Parameters.AddWithValue("?pants_asset", appearance.PantsAsset.ToString());
-                cmd.Parameters.AddWithValue("?shoes_item", appearance.ShoesItem.ToString());
-                cmd.Parameters.AddWithValue("?shoes_asset", appearance.ShoesAsset.ToString());
-                cmd.Parameters.AddWithValue("?socks_item", appearance.SocksItem.ToString());
-                cmd.Parameters.AddWithValue("?socks_asset", appearance.SocksAsset.ToString());
-                cmd.Parameters.AddWithValue("?jacket_item", appearance.JacketItem.ToString());
-                cmd.Parameters.AddWithValue("?jacket_asset", appearance.JacketAsset.ToString());
-                cmd.Parameters.AddWithValue("?gloves_item", appearance.GlovesItem.ToString());
-                cmd.Parameters.AddWithValue("?gloves_asset", appearance.GlovesAsset.ToString());
-                cmd.Parameters.AddWithValue("?undershirt_item", appearance.UnderShirtItem.ToString());
-                cmd.Parameters.AddWithValue("?undershirt_asset", appearance.UnderShirtAsset.ToString());
-                cmd.Parameters.AddWithValue("?underpants_item", appearance.UnderPantsItem.ToString());
-                cmd.Parameters.AddWithValue("?underpants_asset", appearance.UnderPantsAsset.ToString());
-                cmd.Parameters.AddWithValue("?skirt_item", appearance.SkirtItem.ToString());
-                cmd.Parameters.AddWithValue("?skirt_asset", appearance.SkirtAsset.ToString());
 
-                if (cmd.ExecuteNonQuery() > 0)
+                    using (MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand())
-                    returnval = true;
+                    {
+                        cmd.CommandText = sql;
+                        cmd.Parameters.AddWithValue("?owner", appearance.Owner.ToString());
+                        cmd.Parameters.AddWithValue("?serial", appearance.Serial);
+                        cmd.Parameters.AddWithValue("?visual_params", appearance.VisualParams);
+                        cmd.Parameters.AddWithValue("?texture", appearance.Texture.GetBytes());
+                        cmd.Parameters.AddWithValue("?avatar_height", appearance.AvatarHeight);
+                        cmd.Parameters.AddWithValue("?body_item", appearance.BodyItem.ToString());
+                        cmd.Parameters.AddWithValue("?body_asset", appearance.BodyAsset.ToString());
+                        cmd.Parameters.AddWithValue("?skin_item", appearance.SkinItem.ToString());
+                        cmd.Parameters.AddWithValue("?skin_asset", appearance.SkinAsset.ToString());
+                        cmd.Parameters.AddWithValue("?hair_item", appearance.HairItem.ToString());
+                        cmd.Parameters.AddWithValue("?hair_asset", appearance.HairAsset.ToString());
+                        cmd.Parameters.AddWithValue("?eyes_item", appearance.EyesItem.ToString());
+                        cmd.Parameters.AddWithValue("?eyes_asset", appearance.EyesAsset.ToString());
+                        cmd.Parameters.AddWithValue("?shirt_item", appearance.ShirtItem.ToString());
+                        cmd.Parameters.AddWithValue("?shirt_asset", appearance.ShirtAsset.ToString());
+                        cmd.Parameters.AddWithValue("?pants_item", appearance.PantsItem.ToString());
+                        cmd.Parameters.AddWithValue("?pants_asset", appearance.PantsAsset.ToString());
+                        cmd.Parameters.AddWithValue("?shoes_item", appearance.ShoesItem.ToString());
+                        cmd.Parameters.AddWithValue("?shoes_asset", appearance.ShoesAsset.ToString());
+                        cmd.Parameters.AddWithValue("?socks_item", appearance.SocksItem.ToString());
+                        cmd.Parameters.AddWithValue("?socks_asset", appearance.SocksAsset.ToString());
+                        cmd.Parameters.AddWithValue("?jacket_item", appearance.JacketItem.ToString());
+                        cmd.Parameters.AddWithValue("?jacket_asset", appearance.JacketAsset.ToString());
+                        cmd.Parameters.AddWithValue("?gloves_item", appearance.GlovesItem.ToString());
+                        cmd.Parameters.AddWithValue("?gloves_asset", appearance.GlovesAsset.ToString());
+                        cmd.Parameters.AddWithValue("?undershirt_item", appearance.UnderShirtItem.ToString());
+                        cmd.Parameters.AddWithValue("?undershirt_asset", appearance.UnderShirtAsset.ToString());
+                        cmd.Parameters.AddWithValue("?underpants_item", appearance.UnderPantsItem.ToString());
+                        cmd.Parameters.AddWithValue("?underpants_asset", appearance.UnderPantsAsset.ToString());
+                        cmd.Parameters.AddWithValue("?skirt_item", appearance.SkirtItem.ToString());
+                        cmd.Parameters.AddWithValue("?skirt_asset", appearance.SkirtAsset.ToString());
 
-                cmd.Dispose();
+                        if (cmd.ExecuteNonQuery() > 0)
+                            returnval = true;
+                    }
+                }
             }
             catch (Exception e)
             {
@@ -1221,33 +1210,38 @@ namespace OpenSim.Data.MySQL
         {
             string sql = "delete from avatarattachments where UUID = ?uuid";
 
-            MySqlCommand cmd = (MySqlCommand) dbcon.CreateCommand();
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
-            cmd.CommandText = sql;
-            cmd.Parameters.AddWithValue("?uuid", agentID.ToString());
-
-            cmd.ExecuteNonQuery();
-
-            if (data == null)
-                return;
-
-            sql = "insert into avatarattachments (UUID, attachpoint, item, asset) values (?uuid, ?attachpoint, ?item, ?asset)";
-
-            cmd = (MySqlCommand) dbcon.CreateCommand();
-            cmd.CommandText = sql;
-
-            foreach (DictionaryEntry e in data)
             {
-                int attachpoint = Convert.ToInt32(e.Key);
+                dbcon.Open();
 
-                Hashtable item = (Hashtable)e.Value;
+                MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand();
-
+                cmd.CommandText = sql;
-                cmd.Parameters.Clear();
                 cmd.Parameters.AddWithValue("?uuid", agentID.ToString());
-                cmd.Parameters.AddWithValue("?attachpoint", attachpoint);
-                cmd.Parameters.AddWithValue("?item",  item["item"]);
-                cmd.Parameters.AddWithValue("?asset", item["asset"]);
 
                 cmd.ExecuteNonQuery();
+
+                if (data == null)
+                    return;
+
+                sql = "insert into avatarattachments (UUID, attachpoint, item, asset) values (?uuid, ?attachpoint, ?item, ?asset)";
+
+                cmd = (MySqlCommand)dbcon.CreateCommand();
+                cmd.CommandText = sql;
+
+                foreach (DictionaryEntry e in data)
+                {
+                    int attachpoint = Convert.ToInt32(e.Key);
+
+                    Hashtable item = (Hashtable)e.Value;
+
+                    cmd.Parameters.Clear();
+                    cmd.Parameters.AddWithValue("?uuid", agentID.ToString());
+                    cmd.Parameters.AddWithValue("?attachpoint", attachpoint);
+                    cmd.Parameters.AddWithValue("?item", item["item"]);
+                    cmd.Parameters.AddWithValue("?asset", item["asset"]);
+
+                    cmd.ExecuteNonQuery();
+                }
             }
         }
     }

OpenSim/Data/MySQL/MySQLRegionData.cs

@@ -38,16 +38,21 @@ namespace OpenSim.Data.MySQL
     public class MySqlRegionData : MySqlFramework, IRegionData
     {
         private string m_Realm;
-        private List<string> m_ColumnNames = null;
+        private List<string> m_ColumnNames;
-//        private int m_LastExpire = 0;
+        //private string m_connectionString;
 
         public MySqlRegionData(string connectionString, string realm)
                 : base(connectionString)
         {
             m_Realm = realm;
+            m_connectionString = connectionString;
 
-            Migration m = new Migration(m_Connection, GetType().Assembly, "GridStore");
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-            m.Update();
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, GetType().Assembly, "GridStore");
+                m.Update();
+            }
         }
 
         public List<RegionData> Get(string regionName, UUID scopeID)
@@ -56,12 +61,13 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            MySqlCommand cmd = new MySqlCommand(command);
+            using (MySqlCommand cmd = new MySqlCommand(command))
+            {
+                cmd.Parameters.AddWithValue("?regionName", regionName);
+                cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
 
-            cmd.Parameters.AddWithValue("?regionName", regionName);
+                return RunCommand(cmd);
-            cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
+            }
-
-            return RunCommand(cmd);
         }
 
         public RegionData Get(int posX, int posY, UUID scopeID)
@@ -70,17 +76,18 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            MySqlCommand cmd = new MySqlCommand(command);
+            using (MySqlCommand cmd = new MySqlCommand(command))
+            {
+                cmd.Parameters.AddWithValue("?posX", posX.ToString());
+                cmd.Parameters.AddWithValue("?posY", posY.ToString());
+                cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
 
-            cmd.Parameters.AddWithValue("?posX", posX.ToString());
+                List<RegionData> ret = RunCommand(cmd);
-            cmd.Parameters.AddWithValue("?posY", posY.ToString());
+                if (ret.Count == 0)
-            cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
+                    return null;
 
-            List<RegionData> ret = RunCommand(cmd);
+                return ret[0];
-            if (ret.Count == 0)
+            }
-                return null;
-
-            return ret[0];
         }
 
         public RegionData Get(UUID regionID, UUID scopeID)
@@ -89,16 +96,17 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            MySqlCommand cmd = new MySqlCommand(command);
+            using (MySqlCommand cmd = new MySqlCommand(command))
+            {
+                cmd.Parameters.AddWithValue("?regionID", regionID.ToString());
+                cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
 
-            cmd.Parameters.AddWithValue("?regionID", regionID.ToString());
+                List<RegionData> ret = RunCommand(cmd);
-            cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
+                if (ret.Count == 0)
+                    return null;
 
-            List<RegionData> ret = RunCommand(cmd);
+                return ret[0];
-            if (ret.Count == 0)
+            }
-                return null;
-
-            return ret[0];
         }
 
         public List<RegionData> Get(int startX, int startY, int endX, int endY, UUID scopeID)
@@ -107,74 +115,79 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            MySqlCommand cmd = new MySqlCommand(command);
+            using (MySqlCommand cmd = new MySqlCommand(command))
+            {
+                cmd.Parameters.AddWithValue("?startX", startX.ToString());
+                cmd.Parameters.AddWithValue("?startY", startY.ToString());
+                cmd.Parameters.AddWithValue("?endX", endX.ToString());
+                cmd.Parameters.AddWithValue("?endY", endY.ToString());
+                cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
 
-            cmd.Parameters.AddWithValue("?startX", startX.ToString());
+                return RunCommand(cmd);
-            cmd.Parameters.AddWithValue("?startY", startY.ToString());
+            }
-            cmd.Parameters.AddWithValue("?endX", endX.ToString());
-            cmd.Parameters.AddWithValue("?endY", endY.ToString());
-            cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
-
-            return RunCommand(cmd);
         }
 
         public List<RegionData> RunCommand(MySqlCommand cmd)
         {
             List<RegionData> retList = new List<RegionData>();
 
-            IDataReader result = ExecuteReader(cmd);
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            while (result.Read())
             {
-                RegionData ret = new RegionData();
+                dbcon.Open();
-                ret.Data = new Dictionary<string, object>();
+                cmd.Connection = dbcon;
 
-                UUID regionID;
+                using (IDataReader result = cmd.ExecuteReader())
-                UUID.TryParse(result["uuid"].ToString(), out regionID);
-                ret.RegionID = regionID;
-                UUID scope;
-                UUID.TryParse(result["ScopeID"].ToString(), out scope);
-                ret.ScopeID = scope;
-                ret.RegionName = result["regionName"].ToString();
-                ret.posX = Convert.ToInt32(result["locX"]);
-                ret.posY = Convert.ToInt32(result["locY"]);
-                ret.sizeX = Convert.ToInt32(result["sizeX"]);
-                ret.sizeY = Convert.ToInt32(result["sizeY"]);
-
-                if (m_ColumnNames == null)
                 {
-                    m_ColumnNames = new List<string>();
+                    while (result.Read())
+                    {
+                        RegionData ret = new RegionData();
+                        ret.Data = new Dictionary<string, object>();
 
-                        DataTable schemaTable = result.GetSchemaTable();
+                        UUID regionID;
-                        foreach (DataRow row in schemaTable.Rows)
+                        UUID.TryParse(result["uuid"].ToString(), out regionID);
+                        ret.RegionID = regionID;
+                        UUID scope;
+                        UUID.TryParse(result["ScopeID"].ToString(), out scope);
+                        ret.ScopeID = scope;
+                        ret.RegionName = result["regionName"].ToString();
+                        ret.posX = Convert.ToInt32(result["locX"]);
+                        ret.posY = Convert.ToInt32(result["locY"]);
+                        ret.sizeX = Convert.ToInt32(result["sizeX"]);
+                        ret.sizeY = Convert.ToInt32(result["sizeY"]);
+
+                        if (m_ColumnNames == null)
                         {
-                            if (row["ColumnName"] != null)
+                            m_ColumnNames = new List<string>();
-                                m_ColumnNames.Add(row["ColumnName"].ToString());
+
+                            DataTable schemaTable = result.GetSchemaTable();
+                            foreach (DataRow row in schemaTable.Rows)
+                            {
+                                if (row["ColumnName"] != null)
+                                    m_ColumnNames.Add(row["ColumnName"].ToString());
+                            }
                         }
+
+                        foreach (string s in m_ColumnNames)
+                        {
+                            if (s == "uuid")
+                                continue;
+                            if (s == "ScopeID")
+                                continue;
+                            if (s == "regionName")
+                                continue;
+                            if (s == "locX")
+                                continue;
+                            if (s == "locY")
+                                continue;
+
+                            ret.Data[s] = result[s].ToString();
+                        }
+
+                        retList.Add(ret);
                     }
-
-                foreach (string s in m_ColumnNames)
-                {
-                    if (s == "uuid")
-                        continue;
-                    if (s == "ScopeID")
-                        continue;
-                    if (s == "regionName")
-                        continue;
-                    if (s == "locX")
-                        continue;
-                    if (s == "locY")
-                        continue;
-
-                    ret.Data[s] = result[s].ToString();
                 }
-
-                retList.Add(ret);
             }
 
-            result.Close();
-            CloseReaderCommand(cmd);
-
             return retList;
         }
 
@@ -201,76 +214,72 @@ namespace OpenSim.Data.MySQL
 
             string[] fields = new List<string>(data.Data.Keys).ToArray();
 
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
-
-            string update = "update `"+m_Realm+"` set locX=?posX, locY=?posY, sizeX=?sizeX, sizeY=?sizeY";
-            foreach (string field in fields)
             {
-                update += ", ";
+                string update = "update `" + m_Realm + "` set locX=?posX, locY=?posY, sizeX=?sizeX, sizeY=?sizeY";
-                update += "`" + field + "` = ?"+field;
+                foreach (string field in fields)
+                {
+                    update += ", ";
+                    update += "`" + field + "` = ?" + field;
 
-                cmd.Parameters.AddWithValue("?"+field, data.Data[field]);
+                    cmd.Parameters.AddWithValue("?" + field, data.Data[field]);
-            }
+                }
 
-            update += " where uuid = ?regionID";
+                update += " where uuid = ?regionID";
 
-            if (data.ScopeID != UUID.Zero)
+                if (data.ScopeID != UUID.Zero)
-                update += " and ScopeID = ?scopeID";
+                    update += " and ScopeID = ?scopeID";
 
-            cmd.CommandText = update;
+                cmd.CommandText = update;
-            cmd.Parameters.AddWithValue("?regionID", data.RegionID.ToString());
+                cmd.Parameters.AddWithValue("?regionID", data.RegionID.ToString());
-            cmd.Parameters.AddWithValue("?regionName", data.RegionName);
+                cmd.Parameters.AddWithValue("?regionName", data.RegionName);
-            cmd.Parameters.AddWithValue("?scopeID", data.ScopeID.ToString());
+                cmd.Parameters.AddWithValue("?scopeID", data.ScopeID.ToString());
-            cmd.Parameters.AddWithValue("?posX", data.posX.ToString());
+                cmd.Parameters.AddWithValue("?posX", data.posX.ToString());
-            cmd.Parameters.AddWithValue("?posY", data.posY.ToString());
+                cmd.Parameters.AddWithValue("?posY", data.posY.ToString());
-            cmd.Parameters.AddWithValue("?sizeX", data.sizeX.ToString());
+                cmd.Parameters.AddWithValue("?sizeX", data.sizeX.ToString());
-            cmd.Parameters.AddWithValue("?sizeY", data.sizeY.ToString());
+                cmd.Parameters.AddWithValue("?sizeY", data.sizeY.ToString());
-
-            if (ExecuteNonQuery(cmd) < 1)
-            {
-                string insert = "insert into `" + m_Realm + "` (`uuid`, `ScopeID`, `locX`, `locY`, `sizeX`, `sizeY`, `regionName`, `" +
-                        String.Join("`, `", fields) +
-                        "`) values ( ?regionID, ?scopeID, ?posX, ?posY, ?sizeX, ?sizeY, ?regionName, ?" + String.Join(", ?", fields) + ")";
-
-                cmd.CommandText = insert;
 
                 if (ExecuteNonQuery(cmd) < 1)
                 {
-                    cmd.Dispose();
+                    string insert = "insert into `" + m_Realm + "` (`uuid`, `ScopeID`, `locX`, `locY`, `sizeX`, `sizeY`, `regionName`, `" +
-                    return false;
+                            String.Join("`, `", fields) +
+                            "`) values ( ?regionID, ?scopeID, ?posX, ?posY, ?sizeX, ?sizeY, ?regionName, ?" + String.Join(", ?", fields) + ")";
+
+                    cmd.CommandText = insert;
+
+                    if (ExecuteNonQuery(cmd) < 1)
+                    {
+                        return false;
+                    }
                 }
             }
 
-            cmd.Dispose();
-
             return true;
         }
 
         public bool SetDataItem(UUID regionID, string item, string value)
         {
-            MySqlCommand cmd = new MySqlCommand("update `" + m_Realm +
+            using (MySqlCommand cmd = new MySqlCommand("update `" + m_Realm + "` set `" + item + "` = ?" + item + " where uuid = ?UUID"))
-                    "` set `" + item + "` = ?" + item + " where uuid = ?UUID");
+            {
+                cmd.Parameters.AddWithValue("?" + item, value);
+                cmd.Parameters.AddWithValue("?UUID", regionID.ToString());
 
-
+                if (ExecuteNonQuery(cmd) > 0)
-            cmd.Parameters.AddWithValue("?"+item, value);
+                    return true;
-            cmd.Parameters.AddWithValue("?UUID", regionID.ToString());
+            }
-
-            if (ExecuteNonQuery(cmd) > 0)
-                return true;
 
             return false;
         }
 
         public bool Delete(UUID regionID)
         {
-            MySqlCommand cmd = new MySqlCommand("delete from `" + m_Realm +
+            using (MySqlCommand cmd = new MySqlCommand("delete from `" + m_Realm + "` where uuid = ?UUID"))
-                    "` where uuid = ?UUID");
+            {
+                cmd.Parameters.AddWithValue("?UUID", regionID.ToString());
 
-
+                if (ExecuteNonQuery(cmd) > 0)
-            cmd.Parameters.AddWithValue("?UUID", regionID.ToString());
+                    return true;
-
+            }
-            if (ExecuteNonQuery(cmd) > 0)
-                return true;
 
             return false;
         }

OpenSim/Data/MySQL/MySQLUserAccountData.cs

@@ -38,16 +38,21 @@ namespace OpenSim.Data.MySQL
     public class MySqlUserAccountData : MySqlFramework, IUserAccountData
     {
         private string m_Realm;
-        private List<string> m_ColumnNames = null;
+        private List<string> m_ColumnNames;
-//        private int m_LastExpire = 0;
+        // private string m_connectionString;
 
         public MySqlUserAccountData(string connectionString, string realm)
                 : base(connectionString)
         {
             m_Realm = realm;
+            m_connectionString = connectionString;
 
-            Migration m = new Migration(m_Connection, GetType().Assembly, "UserStore");
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-            m.Update();
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, GetType().Assembly, "UserStore");
+                m.Update();
+            }
         }
 
         public List<UserAccountData> Query(UUID principalID, UUID scopeID, string query)
@@ -64,49 +69,49 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            MySqlCommand cmd = new MySqlCommand(command);
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
-            cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
-
-            IDataReader result = ExecuteReader(cmd);
-
-            if (result.Read())
             {
-                ret.PrincipalID = principalID;
+                dbcon.Open();
-                UUID scope;
+                MySqlCommand cmd = new MySqlCommand(command, dbcon);
-                UUID.TryParse(result["ScopeID"].ToString(), out scope);
-                ret.ScopeID = scope;
 
-                if (m_ColumnNames == null)
+                cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
+                cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
+
+                IDataReader result = cmd.ExecuteReader();
+
+                if (result.Read())
                 {
-                    m_ColumnNames = new List<string>();
+                    ret.PrincipalID = principalID;
+                    UUID scope;
+                    UUID.TryParse(result["ScopeID"].ToString(), out scope);
+                    ret.ScopeID = scope;
 
-                    DataTable schemaTable = result.GetSchemaTable();
+                    if (m_ColumnNames == null)
-                    foreach (DataRow row in schemaTable.Rows)
+                    {
-                        m_ColumnNames.Add(row["ColumnName"].ToString());
+                        m_ColumnNames = new List<string>();
+
+                        DataTable schemaTable = result.GetSchemaTable();
+                        foreach (DataRow row in schemaTable.Rows)
+                            m_ColumnNames.Add(row["ColumnName"].ToString());
+                    }
+
+                    foreach (string s in m_ColumnNames)
+                    {
+                        if (s == "UUID")
+                            continue;
+                        if (s == "ScopeID")
+                            continue;
+
+                        ret.Data[s] = result[s].ToString();
+                    }
+
+                    return ret;
                 }
-
+                else
-                foreach (string s in m_ColumnNames)
                 {
-                    if (s == "UUID")
+                    return null;
-                        continue;
-                    if (s == "ScopeID")
-                        continue;
-
-                    ret.Data[s] = result[s].ToString();
                 }
-
-                result.Close();
-                CloseReaderCommand(cmd);
-
-                return ret;
             }
-
-            result.Close();
-            CloseReaderCommand(cmd);
-
-            return null;
         }
 
         public bool Store(UserAccountData data)
@@ -118,61 +123,60 @@ namespace OpenSim.Data.MySQL
 
             string[] fields = new List<string>(data.Data.Keys).ToArray();
 
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
-
-            string update = "update `"+m_Realm+"` set ";
-            bool first = true;
-            foreach (string field in fields)
             {
-                if (!first)
+                string update = "update `" + m_Realm + "` set ";
-                    update += ", ";
+                bool first = true;
-                update += "`" + field + "` = ?"+field;
+                foreach (string field in fields)
+                {
+                    if (!first)
+                        update += ", ";
+                    update += "`" + field + "` = ?" + field;
 
-                first = false;
+                    first = false;
 
-                cmd.Parameters.AddWithValue("?"+field, data.Data[field]);
+                    cmd.Parameters.AddWithValue("?" + field, data.Data[field]);
-            }
+                }
 
-            update += " where UUID = ?principalID";
+                update += " where UUID = ?principalID";
 
-            if (data.ScopeID != UUID.Zero)
+                if (data.ScopeID != UUID.Zero)
-                update += " and ScopeID = ?scopeID";
+                    update += " and ScopeID = ?scopeID";
 
-            cmd.CommandText = update;
+                cmd.CommandText = update;
-            cmd.Parameters.AddWithValue("?principalID", data.PrincipalID.ToString());
+                cmd.Parameters.AddWithValue("?principalID", data.PrincipalID.ToString());
-            cmd.Parameters.AddWithValue("?scopeID", data.ScopeID.ToString());
+                cmd.Parameters.AddWithValue("?scopeID", data.ScopeID.ToString());
-
-            if (ExecuteNonQuery(cmd) < 1)
-            {
-                string insert = "insert into `" + m_Realm + "` (`UUID`, `ScopeID`, `" +
-                        String.Join("`, `", fields) +
-                        "`) values (?principalID, ?scopeID, ?" + String.Join(", ?", fields) + ")";
-
-                cmd.CommandText = insert;
 
                 if (ExecuteNonQuery(cmd) < 1)
                 {
-                    cmd.Dispose();
+                    string insert = "insert into `" + m_Realm + "` (`UUID`, `ScopeID`, `" +
-                    return false;
+                            String.Join("`, `", fields) +
+                            "`) values (?principalID, ?scopeID, ?" + String.Join(", ?", fields) + ")";
+
+                    cmd.CommandText = insert;
+
+                    if (ExecuteNonQuery(cmd) < 1)
+                    {
+                        cmd.Dispose();
+                        return false;
+                    }
                 }
             }
 
-            cmd.Dispose();
-
             return true;
         }
 
         public bool SetDataItem(UUID principalID, string item, string value)
         {
-            MySqlCommand cmd = new MySqlCommand("update `" + m_Realm +
+            using (MySqlCommand cmd = new MySqlCommand("update `" + m_Realm + "` set `" +
-                    "` set `" + item + "` = ?" + item + " where UUID = ?UUID");
+                item + "` = ?" + item + " where UUID = ?UUID"))
+            {
+                cmd.Parameters.AddWithValue("?" + item, value);
+                cmd.Parameters.AddWithValue("?UUID", principalID.ToString());
 
-
+                if (ExecuteNonQuery(cmd) > 0)
-            cmd.Parameters.AddWithValue("?"+item, value);
+                    return true;
-            cmd.Parameters.AddWithValue("?UUID", principalID.ToString());
+            }
-
-            if (ExecuteNonQuery(cmd) > 0)
-                return true;
 
             return false;
         }

OpenSim/Data/MySQL/MySQLUserData.cs

@@ -33,6 +33,7 @@ using System.Reflection;
 using System.Text.RegularExpressions;
 using System.Threading;
 using log4net;
+using MySql.Data.MySqlClient;
 using OpenMetaverse;
 using OpenSim.Framework;
 
@@ -45,15 +46,9 @@ namespace OpenSim.Data.MySQL
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        /// <summary>
+        private MySQLManager m_database;
-        /// Database manager for MySQL
+        private string m_connectionString;
-        /// </summary>
+        private object m_dbLock = new object();
-        public MySQLManager database;
-
-        /// <summary>
-        /// Better DB manager. Swap-in replacement too.
-        /// </summary>
-        public Dictionary<int, MySQLSuperManager> m_dbconnections = new Dictionary<int, MySQLSuperManager>();
 
         public int m_maxConnections = 10;
         public int m_lastConnect;
@@ -63,7 +58,6 @@ namespace OpenSim.Data.MySQL
         private string m_userFriendsTableName = "userfriends";
         private string m_appearanceTableName = "avatarappearance";
         private string m_attachmentsTableName = "avatarattachments";
-        private string m_connectString;
 
         public override void Initialise()
         {
@@ -71,41 +65,6 @@ namespace OpenSim.Data.MySQL
             throw new PluginNotInitialisedException(Name);
         }
 
-        public MySQLSuperManager GetLockedConnection(string why)
-        {
-            int lockedCons = 0;
-            while (true)
-            {
-                m_lastConnect++;
-
-                // Overflow protection
-                if (m_lastConnect == int.MaxValue)
-                    m_lastConnect = 0;
-
-                MySQLSuperManager x = m_dbconnections[m_lastConnect%m_maxConnections];
-                if (!x.Locked)
-                {
-                    x.GetLock();
-                    x.Running = why;
-                    return x;
-                }
-
-                lockedCons++;
-                if (lockedCons > m_maxConnections)
-                {
-                    lockedCons = 0;
-                    Thread.Sleep(1000); // Wait some time before searching them again.
-                    m_log.Debug(
-                        "WARNING: All threads are in use. Probable cause: Something didnt release a mutex properly, or high volume of requests inbound.");
-                    m_log.Debug("Current connections-in-use dump:");
-                    foreach (KeyValuePair<int, MySQLSuperManager> kvp in m_dbconnections)
-                    {
-                        m_log.Debug(kvp.Value.Running);
-                    }
-                }
-            }
-        }
-
         /// <summary>
         /// Initialise User Interface
         /// Loads and initialises the MySQL storage plugin
@@ -115,55 +74,18 @@ namespace OpenSim.Data.MySQL
         /// <param name="connect">connect string.</param>
         public override void Initialise(string connect)
         {
-            if (connect == String.Empty)
+            m_connectionString = connect;
-            {
+            m_database = new MySQLManager(connect);
-                // TODO: actually do something with our connect string
-                // instead of loading the second config
-
-                m_log.Warn("Using obsoletely mysql_connection.ini, try using user_source connect string instead");
-                IniFile iniFile = new IniFile("mysql_connection.ini");
-                string settingHostname = iniFile.ParseFileReadValue("hostname");
-                string settingDatabase = iniFile.ParseFileReadValue("database");
-                string settingUsername = iniFile.ParseFileReadValue("username");
-                string settingPassword = iniFile.ParseFileReadValue("password");
-                string settingPooling = iniFile.ParseFileReadValue("pooling");
-                string settingPort = iniFile.ParseFileReadValue("port");
-
-                m_connectString = "Server=" + settingHostname + ";Port=" + settingPort + ";Database=" + settingDatabase +
-                                  ";User ID=" +
-                                  settingUsername + ";Password=" + settingPassword + ";Pooling=" + settingPooling + ";";
-
-                m_log.Info("Creating " + m_maxConnections + " DB connections...");
-                for (int i = 0; i < m_maxConnections; i++)
-                {
-                    m_log.Info("Connecting to DB... [" + i + "]");
-                    MySQLSuperManager msm = new MySQLSuperManager();
-                    msm.Manager = new MySQLManager(m_connectString);
-                    m_dbconnections.Add(i, msm);
-                }
-
-                database = new MySQLManager(m_connectString);
-            }
-            else
-            {
-                m_connectString = connect;
-                database = new MySQLManager(m_connectString);
-
-                m_log.Info("Creating " + m_maxConnections + " DB connections...");
-                for (int i = 0; i < m_maxConnections; i++)
-                {
-                    m_log.Info("Connecting to DB... [" + i + "]");
-                    MySQLSuperManager msm = new MySQLSuperManager();
-                    msm.Manager = new MySQLManager(m_connectString);
-                    m_dbconnections.Add(i, msm);
-                }
-            }
 
             // This actually does the roll forward assembly stuff
             Assembly assem = GetType().Assembly;
-            Migration m = new Migration(database.Connection, assem, "UserStore");
 
-            m.Update();
+            using (MySql.Data.MySqlClient.MySqlConnection dbcon = new MySql.Data.MySqlClient.MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, assem, "UserStore");
+                m.Update();
+            }
         }
 
         public override void Dispose()
@@ -173,35 +95,32 @@ namespace OpenSim.Data.MySQL
         // see IUserDataPlugin
         public override UserProfileData GetUserByName(string user, string last)
         {
-            MySQLSuperManager dbm = GetLockedConnection("GetUserByName");
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
                 param["?first"] = user;
                 param["?second"] = last;
 
-                IDbCommand result =
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    dbm.Manager.Query(
+                {
-                        "SELECT * FROM " + m_usersTableName + " WHERE username = ?first AND lastname = ?second", param);
+                    dbcon.Open();
-                IDataReader reader = result.ExecuteReader();
 
-                UserProfileData row = dbm.Manager.readUserRow(reader);
+                    using (IDbCommand result = m_database.Query(dbcon,
-
+                        "SELECT * FROM " + m_usersTableName + " WHERE username = ?first AND lastname = ?second", param))
-                reader.Dispose();
+                    {
-                result.Dispose();
+                        using (IDataReader reader = result.ExecuteReader())
-                return row;
+                        {
+                            UserProfileData row = m_database.readUserRow(reader);
+                            return row;
+                        }
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         #region User Friends List Data
@@ -216,38 +135,38 @@ namespace OpenSim.Data.MySQL
             param["?friendPerms"] = perms.ToString();
             param["?datetimestamp"] = dtvalue.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("AddNewUserFriend");
-
             try
             {
-                IDbCommand adder =
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    dbm.Manager.Query(
+                {
+                    dbcon.Open();
+
+                    using (IDbCommand adder = m_database.Query(dbcon,
                         "INSERT INTO `" + m_userFriendsTableName + "` " +
                         "(`ownerID`,`friendID`,`friendPerms`,`datetimestamp`) " +
                         "VALUES " +
                         "(?ownerID,?friendID,?friendPerms,?datetimestamp)",
-                        param);
+                        param))
-                adder.ExecuteNonQuery();
+                    {
+                        adder.ExecuteNonQuery();
+                    }
 
-                adder =
+                    using (IDbCommand adder = m_database.Query(dbcon,
-                    dbm.Manager.Query(
                         "INSERT INTO `" + m_userFriendsTableName + "` " +
                         "(`ownerID`,`friendID`,`friendPerms`,`datetimestamp`) " +
                         "VALUES " +
                         "(?friendID,?ownerID,?friendPerms,?datetimestamp)",
-                        param);
+                        param))
-                adder.ExecuteNonQuery();
+                    {
+                        adder.ExecuteNonQuery();
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         public override void RemoveUserFriend(UUID friendlistowner, UUID friend)
@@ -256,32 +175,32 @@ namespace OpenSim.Data.MySQL
             param["?ownerID"] = friendlistowner.ToString();
             param["?friendID"] = friend.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("RemoveUserFriend");
-
             try
             {
-                IDbCommand updater =
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    dbm.Manager.Query(
+                {
-                        "delete from " + m_userFriendsTableName + " where ownerID = ?ownerID and friendID = ?friendID",
+                    dbcon.Open();
-                        param);
-                updater.ExecuteNonQuery();
 
-                updater =
+                    using (IDbCommand updater = m_database.Query(dbcon,
-                    dbm.Manager.Query(
+                            "delete from " + m_userFriendsTableName + " where ownerID = ?ownerID and friendID = ?friendID",
-                        "delete from " + m_userFriendsTableName + " where ownerID = ?friendID and friendID = ?ownerID",
+                            param))
-                        param);
+                    {
-                updater.ExecuteNonQuery();
+                        updater.ExecuteNonQuery();
+                    }
+
+                    using (IDbCommand updater = m_database.Query(dbcon,
+                            "delete from " + m_userFriendsTableName + " where ownerID = ?friendID and friendID = ?ownerID",
+                            param))
+                    {
+                        updater.ExecuteNonQuery();
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         public override void UpdateUserFriendPerms(UUID friendlistowner, UUID friend, uint perms)
@@ -291,28 +210,27 @@ namespace OpenSim.Data.MySQL
             param["?friendID"] = friend.ToString();
             param["?friendPerms"] = perms.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("UpdateUserFriendPerms");
-
             try
             {
-                IDbCommand updater =
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    dbm.Manager.Query(
+                {
-                        "update " + m_userFriendsTableName +
+                    dbcon.Open();
-                        " SET friendPerms = ?friendPerms " +
+
-                        "where ownerID = ?ownerID and friendID = ?friendID",
+                    using (IDbCommand updater = m_database.Query(dbcon,
-                        param);
+                            "update " + m_userFriendsTableName +
-                updater.ExecuteNonQuery();
+                            " SET friendPerms = ?friendPerms " +
+                            "where ownerID = ?ownerID and friendID = ?friendID",
+                            param))
+                    {
+                        updater.ExecuteNonQuery();
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         public override List<FriendListItem> GetUserFriendList(UUID friendlistowner)
@@ -322,87 +240,83 @@ namespace OpenSim.Data.MySQL
             Dictionary<string, object> param = new Dictionary<string, object>();
             param["?ownerID"] = friendlistowner.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("GetUserFriendList");
-
             try
             {
-                //Left Join userfriends to itself
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                IDbCommand result =
+                {
-                    dbm.Manager.Query(
+                    dbcon.Open();
+
+                    //Left Join userfriends to itself
+                    using (IDbCommand result = m_database.Query(dbcon,
                         "select a.ownerID,a.friendID,a.friendPerms,b.friendPerms as ownerperms from " +
                         m_userFriendsTableName + " as a, " + m_userFriendsTableName + " as b" +
                         " where a.ownerID = ?ownerID and b.ownerID = a.friendID and b.friendID = a.ownerID",
-                        param);
+                        param))
-                IDataReader reader = result.ExecuteReader();
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            while (reader.Read())
+                            {
+                                FriendListItem fli = new FriendListItem();
+                                fli.FriendListOwner = new UUID((string)reader["ownerID"]);
+                                fli.Friend = new UUID((string)reader["friendID"]);
+                                fli.FriendPerms = (uint)Convert.ToInt32(reader["friendPerms"]);
 
-                while (reader.Read())
+                                // This is not a real column in the database table, it's a joined column from the opposite record
-                {
+                                fli.FriendListOwnerPerms = (uint)Convert.ToInt32(reader["ownerperms"]);
-                    FriendListItem fli = new FriendListItem();
-                    fli.FriendListOwner = new UUID((string) reader["ownerID"]);
-                    fli.Friend = new UUID((string) reader["friendID"]);
-                    fli.FriendPerms = (uint) Convert.ToInt32(reader["friendPerms"]);
 
-                    // This is not a real column in the database table, it's a joined column from the opposite record
+                                Lfli.Add(fli);
-                    fli.FriendListOwnerPerms = (uint) Convert.ToInt32(reader["ownerperms"]);
+                            }
-
+                        }
-                    Lfli.Add(fli);
+                    }
                 }
-
-                reader.Dispose();
-                result.Dispose();
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return Lfli;
             }
-            finally
-            {
-                dbm.Release();
-            }
 
             return Lfli;
         }
 
         override public Dictionary<UUID, FriendRegionInfo> GetFriendRegionInfos (List<UUID> uuids)
         {
-            MySQLSuperManager dbm = GetLockedConnection("GetFriendRegionInfos");
             Dictionary<UUID, FriendRegionInfo> infos = new Dictionary<UUID,FriendRegionInfo>();
 
             try
             {
-                foreach (UUID uuid in uuids)
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
                 {
-                    Dictionary<string, object> param = new Dictionary<string, object>();
+                    dbcon.Open();
-                    param["?uuid"] = uuid.ToString();
-                    IDbCommand result =
-                        dbm.Manager.Query("select agentOnline,currentHandle from " + m_agentsTableName +
-                                          " where UUID = ?uuid", param);
 
-                    IDataReader reader = result.ExecuteReader();
+                    foreach (UUID uuid in uuids)
-                    while (reader.Read())
                     {
-                        FriendRegionInfo fri = new FriendRegionInfo();
+                        Dictionary<string, object> param = new Dictionary<string, object>();
-                        fri.isOnline = (sbyte)reader["agentOnline"] != 0;
+                        param["?uuid"] = uuid.ToString();
-                        fri.regionHandle = (ulong)reader["currentHandle"];
 
-                        infos[uuid] = fri;
+                        using (IDbCommand result = m_database.Query(dbcon, "select agentOnline,currentHandle from " + m_agentsTableName +
+                                              " where UUID = ?uuid", param))
+                        {
+                            using (IDataReader reader = result.ExecuteReader())
+                            {
+                                while (reader.Read())
+                                {
+                                    FriendRegionInfo fri = new FriendRegionInfo();
+                                    fri.isOnline = (sbyte)reader["agentOnline"] != 0;
+                                    fri.regionHandle = (ulong)reader["currentHandle"];
+
+                                    infos[uuid] = fri;
+                                }
+                            }
+                        }
                     }
-
-                    reader.Dispose();
-                    result.Dispose();
                 }
             }
             catch (Exception e)
             {
                 m_log.Warn("[MYSQL]: Got exception on trying to find friends regions:", e);
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
-            }
-            finally
-            {
-                dbm.Release();
             }
 
             return infos;
@@ -423,76 +337,73 @@ namespace OpenSim.Data.MySQL
                 Dictionary<string, object> param = new Dictionary<string, object>();
                 param["?first"] = objAlphaNumericPattern.Replace(querysplit[0], String.Empty) + "%";
                 param["?second"] = objAlphaNumericPattern.Replace(querysplit[1], String.Empty) + "%";
-                MySQLSuperManager dbm = GetLockedConnection("GeneratePickerResults");
 
                 try
                 {
-                    IDbCommand result =
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                        dbm.Manager.Query(
+                    {
+                        dbcon.Open();
+
+                        using (IDbCommand result = m_database.Query(dbcon,
                             "SELECT UUID,username,lastname FROM " + m_usersTableName +
                             " WHERE username like ?first AND lastname like ?second LIMIT 100",
-                            param);
+                            param))
-                    IDataReader reader = result.ExecuteReader();
+                        {
-
+                            using (IDataReader reader = result.ExecuteReader())
-                    while (reader.Read())
+                            {
-                    {
+                                while (reader.Read())
-                        AvatarPickerAvatar user = new AvatarPickerAvatar();
+                                {
-                        user.AvatarID = new UUID((string) reader["UUID"]);
+                                    AvatarPickerAvatar user = new AvatarPickerAvatar();
-                        user.firstName = (string) reader["username"];
+                                    user.AvatarID = new UUID((string)reader["UUID"]);
-                        user.lastName = (string) reader["lastname"];
+                                    user.firstName = (string)reader["username"];
-                        returnlist.Add(user);
+                                    user.lastName = (string)reader["lastname"];
+                                    returnlist.Add(user);
+                                }
+                            }
+                        }
                     }
-                    reader.Dispose();
-                    result.Dispose();
                 }
                 catch (Exception e)
                 {
-                    dbm.Manager.Reconnect();
+                    m_log.Error(e.Message, e);
-                    m_log.Error(e.ToString());
                     return returnlist;
                 }
-                finally
-                {
-                    dbm.Release();
-                }
             }
             else
             {
-                MySQLSuperManager dbm = GetLockedConnection("GeneratePickerResults");
-
                 try
                 {
                     Dictionary<string, object> param = new Dictionary<string, object>();
                     param["?first"] = objAlphaNumericPattern.Replace(querysplit[0], String.Empty) + "%";
 
-                    IDbCommand result =
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                        dbm.Manager.Query(
+                    {
+                        dbcon.Open();
+
+                        using (IDbCommand result = m_database.Query(dbcon,
                             "SELECT UUID,username,lastname FROM " + m_usersTableName +
                             " WHERE username like ?first OR lastname like ?first LIMIT 100",
-                            param);
+                            param))
-                    IDataReader reader = result.ExecuteReader();
+                        {
-
+                            using (IDataReader reader = result.ExecuteReader())
-                    while (reader.Read())
+                            {
-                    {
+                                while (reader.Read())
-                        AvatarPickerAvatar user = new AvatarPickerAvatar();
+                                {
-                        user.AvatarID = new UUID((string) reader["UUID"]);
+                                    AvatarPickerAvatar user = new AvatarPickerAvatar();
-                        user.firstName = (string) reader["username"];
+                                    user.AvatarID = new UUID((string)reader["UUID"]);
-                        user.lastName = (string) reader["lastname"];
+                                    user.firstName = (string)reader["username"];
-                        returnlist.Add(user);
+                                    user.lastName = (string)reader["lastname"];
+                                    returnlist.Add(user);
+                                }
+                            }
+                        }
                     }
-                    reader.Dispose();
-                    result.Dispose();
                 }
                 catch (Exception e)
                 {
-                    dbm.Manager.Reconnect();
+                    m_log.Error(e.Message, e);
-                    m_log.Error(e.ToString());
                     return returnlist;
                 }
-                finally
-                {
-                    dbm.Release();
-                }
             }
             return returnlist;
         }
@@ -504,32 +415,30 @@ namespace OpenSim.Data.MySQL
         /// <returns>User profile data</returns>
         public override UserProfileData GetUserByUUID(UUID uuid)
         {
-            MySQLSuperManager dbm = GetLockedConnection("GetUserByUUID");
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
                 param["?uuid"] = uuid.ToString();
 
-                IDbCommand result = dbm.Manager.Query("SELECT * FROM " + m_usersTableName + " WHERE UUID = ?uuid", param);
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                IDataReader reader = result.ExecuteReader();
+                {
+                    dbcon.Open();
 
-                UserProfileData row = dbm.Manager.readUserRow(reader);
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM " + m_usersTableName + " WHERE UUID = ?uuid", param))
-
+                    {
-                reader.Dispose();
+                        using (IDataReader reader = result.ExecuteReader())
-                result.Dispose();
+                        {
-
+                            UserProfileData row = m_database.readUserRow(reader);
-                return row;
+                            return row;
+                        }
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -565,25 +474,18 @@ namespace OpenSim.Data.MySQL
             param["?UUID"] = AgentID.ToString();
             param["?webLoginKey"] = WebLoginKey.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("StoreWebLoginKey");
-
             try
             {
-               dbm.Manager.ExecuteParameterizedSql(
+                m_database.ExecuteParameterizedSql(
-                        "update " + m_usersTableName + " SET webLoginKey = ?webLoginKey " +
+                    "update " + m_usersTableName + " SET webLoginKey = ?webLoginKey " +
-                        "where UUID = ?UUID",
+                    "where UUID = ?UUID",
-                        param);
+                    param);
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -593,34 +495,30 @@ namespace OpenSim.Data.MySQL
         /// <returns>The users session</returns>
         public override UserAgentData GetAgentByUUID(UUID uuid)
         {
-            MySQLSuperManager dbm = GetLockedConnection("GetAgentByUUID");
-
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
                 param["?uuid"] = uuid.ToString();
 
-                IDbCommand result = dbm.Manager.Query("SELECT * FROM " + m_agentsTableName + " WHERE UUID = ?uuid",
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                                                      param);
+                {
-                IDataReader reader = result.ExecuteReader();
+                    dbcon.Open();
 
-                UserAgentData row = dbm.Manager.readAgentRow(reader);
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM " + m_agentsTableName + " WHERE UUID = ?uuid", param))
-
+                    {
-                reader.Dispose();
+                        using (IDataReader reader = result.ExecuteReader())
-                result.Dispose();
+                        {
-
+                            UserAgentData row = m_database.readAgentRow(reader);
-                return row;
+                            return row;
+                        }
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -634,27 +532,22 @@ namespace OpenSim.Data.MySQL
             {
                 return;
             }
-            MySQLSuperManager dbm = GetLockedConnection("AddNewUserProfile");
 
             try
             {
-                dbm.Manager.insertUserRow(user.ID, user.FirstName, user.SurName, user.Email, user.PasswordHash, user.PasswordSalt,
+                m_database.insertUserRow(
-                                          user.HomeRegion, user.HomeRegionID, user.HomeLocation.X, user.HomeLocation.Y,
+                    user.ID, user.FirstName, user.SurName, user.Email, user.PasswordHash, user.PasswordSalt,
-                                          user.HomeLocation.Z,
+                    user.HomeRegion, user.HomeRegionID, user.HomeLocation.X, user.HomeLocation.Y,
-                                          user.HomeLookAt.X, user.HomeLookAt.Y, user.HomeLookAt.Z, user.Created,
+                    user.HomeLocation.Z,
-                                          user.LastLogin, user.UserInventoryURI, user.UserAssetURI,
+                    user.HomeLookAt.X, user.HomeLookAt.Y, user.HomeLookAt.Z, user.Created,
-                                          user.CanDoMask, user.WantDoMask,
+                    user.LastLogin, user.UserInventoryURI, user.UserAssetURI,
-                                          user.AboutText, user.FirstLifeAboutText, user.Image,
+                    user.CanDoMask, user.WantDoMask,
-                                          user.FirstLifeImage, user.WebLoginKey, user.UserFlags, user.GodLevel, user.CustomType, user.Partner);
+                    user.AboutText, user.FirstLifeAboutText, user.Image,
+                    user.FirstLifeImage, user.WebLoginKey, user.UserFlags, user.GodLevel, user.CustomType, user.Partner);
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
-            }
-            finally
-            {
-                dbm.Release();
             }
         }
 
@@ -668,19 +561,13 @@ namespace OpenSim.Data.MySQL
             if (agent.ProfileID == zero || agent.SessionID == zero)
                 return;
 
-            MySQLSuperManager dbm = GetLockedConnection("AddNewUserAgent");
             try
             {
-                dbm.Manager.insertAgentRow(agent);
+                m_database.insertAgentRow(agent);
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
-            }
-            finally
-            {
-                dbm.Release();
             }
         }
 
@@ -690,24 +577,24 @@ namespace OpenSim.Data.MySQL
         /// <param name="user">The profile data to use to update the DB</param>
         public override bool UpdateUserProfile(UserProfileData user)
         {
-            MySQLSuperManager dbm = GetLockedConnection("UpdateUserProfile");
             try
             {
-                dbm.Manager.updateUserRow(user.ID, user.FirstName, user.SurName, user.Email, user.PasswordHash, user.PasswordSalt,
+                m_database.updateUserRow(
-                                          user.HomeRegion, user.HomeRegionID, user.HomeLocation.X, user.HomeLocation.Y,
+                    user.ID, user.FirstName, user.SurName, user.Email, user.PasswordHash, user.PasswordSalt,
-                                          user.HomeLocation.Z, user.HomeLookAt.X,
+                    user.HomeRegion, user.HomeRegionID, user.HomeLocation.X, user.HomeLocation.Y,
-                                          user.HomeLookAt.Y, user.HomeLookAt.Z, user.Created, user.LastLogin,
+                    user.HomeLocation.Z, user.HomeLookAt.X,
-                                          user.UserInventoryURI,
+                    user.HomeLookAt.Y, user.HomeLookAt.Z, user.Created, user.LastLogin,
-                                          user.UserAssetURI, user.CanDoMask, user.WantDoMask, user.AboutText,
+                    user.UserInventoryURI,
-                                          user.FirstLifeAboutText, user.Image, user.FirstLifeImage, user.WebLoginKey,
+                    user.UserAssetURI, user.CanDoMask, user.WantDoMask, user.AboutText,
-                                          user.UserFlags, user.GodLevel, user.CustomType, user.Partner);
+                    user.FirstLifeAboutText, user.Image, user.FirstLifeImage, user.WebLoginKey,
-            }
+                    user.UserFlags, user.GodLevel, user.CustomType, user.Partner);
-            finally
-            {
-                dbm.Release();
-            }
 
-            return true;
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
         }
 
         /// <summary>
@@ -742,41 +629,40 @@ namespace OpenSim.Data.MySQL
         /// </summary>
         public override AvatarAppearance GetUserAppearance(UUID user)
         {
-            MySQLSuperManager dbm = GetLockedConnection("GetUserAppearance");
             try
             {
                 Dictionary<string, object> param = new Dictionary<string, object>();
                 param["?owner"] = user.ToString();
 
-                IDbCommand result = dbm.Manager.Query(
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    "SELECT * FROM " + m_appearanceTableName + " WHERE owner = ?owner", param);
-                IDataReader reader = result.ExecuteReader();
-
-                AvatarAppearance appearance = dbm.Manager.readAppearanceRow(reader);
-
-                reader.Dispose();
-                result.Dispose();
-
-                if (null == appearance)
                 {
-                    m_log.WarnFormat("[USER DB] No appearance found for user {0}", user.ToString());
+                    dbcon.Open();
-                    return null;
+
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM " + m_appearanceTableName + " WHERE owner = ?owner", param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            AvatarAppearance appearance = m_database.readAppearanceRow(reader);
+
+                            if (appearance == null)
+                            {
+                                m_log.WarnFormat("[USER DB] No appearance found for user {0}", user.ToString());
+                                return null;
+                            }
+                            else
+                            {
+                                appearance.SetAttachments(GetUserAttachments(user));
+                                return appearance;
+                            }
+                        }
+                    }
                 }
-                
-                appearance.SetAttachments(GetUserAttachments(user));
-
-                return appearance;
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         /// <summary>
@@ -787,22 +673,16 @@ namespace OpenSim.Data.MySQL
         // override
         public override void UpdateUserAppearance(UUID user, AvatarAppearance appearance)
         {
-            MySQLSuperManager dbm = GetLockedConnection("UpdateUserAppearance");
             try
             {
                 appearance.Owner = user;
-                dbm.Manager.insertAppearanceRow(appearance);
+                m_database.insertAppearanceRow(appearance);
 
                 UpdateUserAttachments(user, appearance.GetAttachments());
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
-            }
-            finally
-            {
-                dbm.Release();
             }
         }
 
@@ -829,43 +709,33 @@ namespace OpenSim.Data.MySQL
             Dictionary<string, object> param = new Dictionary<string, object>();
             param["?uuid"] = agentID.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("GetUserAttachments");
-
             try
             {
-                IDbCommand result = dbm.Manager.Query(
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    "SELECT attachpoint, item, asset from " + m_attachmentsTableName + " WHERE UUID = ?uuid", param);
+                {
-                IDataReader reader = result.ExecuteReader();
+                    dbcon.Open();
 
-                Hashtable ret = dbm.Manager.readAttachments(reader);
+                    using (IDbCommand result = m_database.Query(dbcon,
-
+                        "SELECT attachpoint, item, asset from " + m_attachmentsTableName + " WHERE UUID = ?uuid", param))
-                reader.Dispose();
+                    {
-                result.Dispose();
+                        using (IDataReader reader = result.ExecuteReader())
-                return ret;
+                        {
+                            Hashtable ret = m_database.readAttachments(reader);
+                            return ret;
+                        }
+                    }
+                }
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         public void UpdateUserAttachments(UUID agentID, Hashtable data)
         {
-            MySQLSuperManager dbm = GetLockedConnection("UpdateUserAttachments");
+            m_database.writeAttachments(agentID, data);
-            try
-            {
-                dbm.Manager.writeAttachments(agentID, data);
-            }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         public override void ResetAttachments(UUID userID)
@@ -873,19 +743,10 @@ namespace OpenSim.Data.MySQL
             Dictionary<string, string> param = new Dictionary<string, string>();
             param["?uuid"] = userID.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("ResetAttachments");
+            m_database.ExecuteParameterizedSql(
-
+                "UPDATE " + m_attachmentsTableName +
-            try
+                " SET asset = '00000000-0000-0000-0000-000000000000' WHERE UUID = ?uuid",
-            {
+                param);
-                dbm.Manager.ExecuteParameterizedSql(
-                    "UPDATE " + m_attachmentsTableName + 
-                    " SET asset = '00000000-0000-0000-0000-000000000000' WHERE UUID = ?uuid",
-                    param);
-            }
-            finally
-            {
-                dbm.Release();
-            }
         }
 
         public override void LogoutUsers(UUID regionID)
@@ -893,25 +754,18 @@ namespace OpenSim.Data.MySQL
             Dictionary<string, string> param = new Dictionary<string, string>();
             param["?regionID"] = regionID.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("LogoutUsers");
-
             try
             {
-               dbm.Manager.ExecuteParameterizedSql(
+                m_database.ExecuteParameterizedSql(
-                        "update " + m_agentsTableName + " SET agentOnline = 0 " +
+                    "update " + m_agentsTableName + " SET agentOnline = 0 " +
-                        "where currentRegion = ?regionID",
+                    "where currentRegion = ?regionID",
-                        param);
+                    param);
             }
             catch (Exception e)
             {
-                dbm.Manager.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return;
             }
-            finally
-            {
-                dbm.Release();
-            }
         }
     }
 }

OpenSim/Data/MySQL/MySQLXInventoryData.cs

@@ -110,47 +110,58 @@ namespace OpenSim.Data.MySQL
 
         public bool MoveItem(string id, string newParent)
         {
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
 
-            cmd.CommandText = String.Format("update {0} set parentFolderID = ?ParentFolderID where inventoryID = ?InventoryID", m_Realm);
+                cmd.CommandText = String.Format("update {0} set parentFolderID = ?ParentFolderID where inventoryID = ?InventoryID", m_Realm);
-            cmd.Parameters.AddWithValue("?ParentFolderID", newParent);
+                cmd.Parameters.AddWithValue("?ParentFolderID", newParent);
-            cmd.Parameters.AddWithValue("?InventoryID", id);
+                cmd.Parameters.AddWithValue("?InventoryID", id);
 
-            return ExecuteNonQuery(cmd) == 0 ? false : true;
+                return ExecuteNonQuery(cmd) == 0 ? false : true;
+            }
         }
 
         public XInventoryItem[] GetActiveGestures(UUID principalID)
         {
-            MySqlCommand cmd  = new MySqlCommand();
+            using (MySqlCommand cmd  = new MySqlCommand())
-            cmd.CommandText = String.Format("select * from inventoryitems where avatarId = ?uuid and assetType = ?type and flags = 1", m_Realm);
+            {
+                cmd.CommandText = String.Format("select * from inventoryitems where avatarId = ?uuid and assetType = ?type and flags = 1", m_Realm);
 
-            cmd.Parameters.AddWithValue("?uuid", principalID.ToString());
+                cmd.Parameters.AddWithValue("?uuid", principalID.ToString());
-            cmd.Parameters.AddWithValue("?type", (int)AssetType.Gesture);
+                cmd.Parameters.AddWithValue("?type", (int)AssetType.Gesture);
 
-            return DoQuery(cmd);
+                return DoQuery(cmd);
+            }
         }
 
         public int GetAssetPermissions(UUID principalID, UUID assetID)
         {
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
-            cmd.CommandText = String.Format("select bit_or(inventoryCurrentPermissions) as inventoryCurrentPermissions from inventoryitems where avatarID = ?PrincipalID and assetID = ?AssetID group by assetID", m_Realm);
-            cmd.Parameters.AddWithValue("?PrincipalID", principalID.ToString());
-            cmd.Parameters.AddWithValue("?AssetID", assetID.ToString());
-
-            IDataReader reader = ExecuteReader(cmd);
-
-            int perms = 0;
-
-            if (reader.Read())
             {
-                perms = Convert.ToInt32(reader["inventoryCurrentPermissions"]);
+                dbcon.Open();
+
+                using (MySqlCommand cmd = new MySqlCommand())
+                {
+                    cmd.Connection = dbcon;
+
+                    cmd.CommandText = String.Format("select bit_or(inventoryCurrentPermissions) as inventoryCurrentPermissions from inventoryitems where avatarID = ?PrincipalID and assetID = ?AssetID group by assetID", m_Realm);
+                    cmd.Parameters.AddWithValue("?PrincipalID", principalID.ToString());
+                    cmd.Parameters.AddWithValue("?AssetID", assetID.ToString());
+                
+                    using (IDataReader reader = cmd.ExecuteReader())
+                    {
+
+                        int perms = 0;
+                    
+                        if (reader.Read())
+                        {
+                            perms = Convert.ToInt32(reader["inventoryCurrentPermissions"]);
+                        }
+
+                        return perms;
+                    }
+                }
             }
-
-            reader.Close();
-            CloseReaderCommand(cmd);
-
-            return perms;
         }
     }
 }

OpenSim/Data/MySQL/Tests/MySQLGridTest.cs

@@ -31,6 +31,7 @@ using OpenSim.Data.Tests;
 using log4net;
 using System.Reflection;
 using OpenSim.Tests.Common;
+using MySql.Data.MySqlClient;
 
 namespace OpenSim.Data.MySQL.Tests
 {
@@ -65,9 +66,13 @@ namespace OpenSim.Data.MySQL.Tests
 
             // This actually does the roll forward assembly stuff
             Assembly assem = GetType().Assembly;
-            Migration m = new Migration(database.Connection, assem, "GridStore");
 
-            m.Update();
+            using (MySqlConnection dbcon = new MySqlConnection(connect))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, assem, "AssetStore");
+                m.Update();
+            }
         }
 
         [TestFixtureTearDown]