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");
 
+            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>
@@ -135,14 +104,16 @@ 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
@@ -163,18 +134,13 @@ namespace OpenSim.Data.MySQL
 
                                     asset.Temporary = Convert.ToBoolean(dbReader["temporary"]);
                                 }
-                        dbReader.Close();
-                        cmd.Dispose();
                             }
-                    if (asset != null)
-                        UpdateAccessTime(asset);
                         }
                         catch (Exception e)
                         {
-                    m_log.ErrorFormat(
+                            m_log.Error("[ASSETS DB]: MySql failure fetching asset " + assetID + ": " + e.Message);
-                        "[ASSETS DB]: MySql failure fetching asset {0}" + Environment.NewLine + e.ToString()
+                        }
-                        + Environment.NewLine + "Reconnecting", assetID);
+                    }
-                    _dbConnection.Reconnect();
                 }
             }
             return asset;
@@ -187,15 +153,17 @@ 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))
+                {
+                    dbcon.Open();
 
                     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);
+                            dbcon);
 
                     string assetName = asset.Name;
                     if (asset.Name.Length > 64)
@@ -233,9 +201,9 @@ namespace OpenSim.Data.MySQL
                     }
                     catch (Exception e)
                     {
-                    m_log.ErrorFormat("[ASSET DB]: MySQL failure creating asset {0} with name \"{1}\". Attempting reconnect. Error: {2}",
+                        m_log.ErrorFormat("[ASSET DB]: MySQL failure creating asset {0} with name \"{1}\". Error: {2}",
                             asset.FullID, asset.Name, e.Message);
-                    _dbConnection.Reconnect();
+                    }
                 }
             }
         }
@@ -245,13 +213,14 @@ 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))
-
+                {
+                    dbcon.Open();
                     MySqlCommand cmd =
                         new MySqlCommand("update assets set access_time=?access_time where id=?id",
-                                     _dbConnection.Connection);
+                                         dbcon);
 
                     // need to ensure we dispose
                     try
@@ -272,7 +241,7 @@ namespace OpenSim.Data.MySQL
                             "[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();
+                    }
                 }
             }
 
@@ -287,15 +256,13 @@ namespace OpenSim.Data.MySQL
         {
             bool assetExists = false;
 
-            lock (_dbConnection)
+            lock (m_dbLock)
+            {
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+                    using (MySqlCommand cmd = new MySqlCommand("SELECT id FROM assets WHERE id=?id", dbcon))
                     {
-                _dbConnection.CheckConnection();
-
-                MySqlCommand cmd =
-                    new MySqlCommand(
-                        "SELECT id FROM assets WHERE id=?id",
-                        _dbConnection.Connection);
-
                         cmd.Parameters.AddWithValue("?id", uuid.ToString());
 
                         try
@@ -303,20 +270,15 @@ namespace OpenSim.Data.MySQL
                             using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
                             {
                                 if (dbReader.Read())
-                        {
                                     assetExists = true;
                             }
-
-                        dbReader.Close();
-                        cmd.Dispose();
-                    }
                         }
                         catch (Exception e)
                         {
                             m_log.ErrorFormat(
-                        "[ASSETS DB]: MySql failure fetching asset {0}" + Environment.NewLine + e.ToString()
+                                "[ASSETS DB]: MySql failure fetching asset {0}" + Environment.NewLine + e.ToString(), uuid);
-                        + Environment.NewLine + "Attempting reconnection", uuid);
+                        }
-                    _dbConnection.Reconnect();
+                    }
                 }
             }
 
@@ -335,11 +297,12 @@ 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);
+                    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);
 
@@ -365,8 +328,8 @@ namespace OpenSim.Data.MySQL
                     }
                     catch (Exception e)
                     {
-                    m_log.Error("[ASSETS DB]: MySql failure fetching asset set" + Environment.NewLine + e.ToString() + Environment.NewLine + "Attempting reconnection");
+                        m_log.Error("[ASSETS DB]: MySql failure fetching asset set" + Environment.NewLine + e.ToString());
-                    _dbConnection.Reconnect();
+                    }
                 }
             }
 
@@ -374,7 +337,5 @@ namespace OpenSim.Data.MySQL
         }
 
         #endregion
-
-
     }
 }

OpenSim/Data/MySQL/MySQLAuthenticationData.cs

@@ -38,30 +38,36 @@ 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))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, GetType().Assembly, "AuthStore");
                 m.Update();
             }
+        }
 
         public AuthenticationData Get(UUID principalID)
         {
             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"
+            {
-            );
+                dbcon.Open();
-
+                MySqlCommand cmd = new MySqlCommand("select * from `" + m_Realm + "` where UUID = ?principalID", dbcon);
                 cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
 
-            IDataReader result = ExecuteReader(cmd);
+                IDataReader result = cmd.ExecuteReader();
 
                 if (result.Read())
                 {
@@ -84,17 +90,14 @@ namespace OpenSim.Data.MySQL
                         ret.Data[s] = result[s].ToString();
                     }
 
-                result.Close();
-                CloseReaderCommand(cmd);
-
                     return ret;
                 }
-
+                else
-            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;
@@ -67,13 +66,14 @@ 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();
 
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+
                 Assembly assem = GetType().Assembly;
-            Migration m = new Migration(m_connection, assem, "EstateStore");
+                Migration m = new Migration(dbcon, assem, "EstateStore");
                 m.Update();
 
                 Type t = typeof(EstateSettings);
@@ -87,6 +87,7 @@ namespace OpenSim.Data.MySQL
                         m_FieldMap[f.Name.Substring(2)] = f;
                 }
             }
+        }
 
         private string[] FieldList
         {
@@ -95,11 +96,13 @@ namespace OpenSim.Data.MySQL
 
         protected void GetWaitTimeout()
         {
-            MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect,
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    m_connection);
+            {
+                dbcon.Open();
 
-            using (MySqlDataReader dbReader =
+                using (MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect, dbcon))
-                    cmd.ExecuteReader(CommandBehavior.SingleRow))
+                {
+                    using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
                     {
                         if (dbReader.Read())
                         {
@@ -107,9 +110,7 @@ namespace OpenSim.Data.MySQL
                                 = Convert.ToInt32(dbReader["@@wait_timeout"]) *
                                 TimeSpan.TicksPerSecond + m_waitTimeoutLeeway;
                         }
-
+                    }
-                dbReader.Close();
-                cmd.Dispose();
                 }
 
                 m_lastConnectionUse = DateTime.Now.Ticks;
@@ -118,24 +119,6 @@ namespace OpenSim.Data.MySQL
                     "[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)
@@ -143,19 +126,26 @@ 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))
+            {
+                dbcon.Open();
 
+                using (MySqlCommand cmd = dbcon.CreateCommand())
+                {
                     cmd.CommandText = sql;
                     cmd.Parameters.AddWithValue("?RegionID", regionID.ToString());
 
-            IDataReader r = cmd.ExecuteReader();
+                    using (IDataReader r = cmd.ExecuteReader())
-
+                    {
                         if (r.Read())
                         {
+                            migration = false;
+
                             foreach (string name in FieldList)
                             {
                                 if (m_FieldMap[name].GetValue(es) is bool)
@@ -178,20 +168,21 @@ namespace OpenSim.Data.MySQL
                                     m_FieldMap[name].SetValue(es, r[name]);
                                 }
                             }
-                r.Close();
                         }
-            else
+                    }
+                }
+
+                if (migration)
                 {
                     // Migration case
-                //
-                r.Close();
-
                     List<string> names = new List<string>(FieldList);
 
                     names.Remove("EstateID");
 
                     sql = "insert into estate_settings (" + String.Join(",", names.ToArray()) + ") values ( ?" + String.Join(", ?", names.ToArray()) + ")";
 
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
+                    {
                         cmd.CommandText = sql;
                         cmd.Parameters.Clear();
 
@@ -215,43 +206,32 @@ namespace OpenSim.Data.MySQL
                         cmd.CommandText = "select LAST_INSERT_ID() as id";
                         cmd.Parameters.Clear();
 
-                r = cmd.ExecuteReader();
+                        using (IDataReader 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
+                        try { cmd.ExecuteNonQuery(); }
-                {
+                        catch (Exception) { }
-                    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
+                        try { cmd.ExecuteNonQuery(); }
-                {
+                        catch (Exception) { }
-                    cmd.ExecuteNonQuery();
-                }
-                catch (Exception)
-                {
-                }
 
                         es.Save();
                     }
+                }
+            }
 
             LoadBanList(es);
 
@@ -265,10 +245,12 @@ 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();
+                dbcon.Open();
 
+                using (MySqlCommand cmd = dbcon.CreateCommand())
+                {
                     cmd.CommandText = sql;
 
                     foreach (string name in FieldList)
@@ -287,6 +269,8 @@ namespace OpenSim.Data.MySQL
                     }
 
                     cmd.ExecuteNonQuery();
+                }
+            }
 
             SaveBanList(es);
             SaveUUIDList(es.EstateID, "estate_managers", es.EstateManagers);
@@ -298,15 +282,17 @@ namespace OpenSim.Data.MySQL
         {
             es.ClearBans();
 
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
+            {
-            MySqlCommand cmd = m_connection.CreateCommand();
+                dbcon.Open();
 
+                using (MySqlCommand cmd = dbcon.CreateCommand())
+                {
                     cmd.CommandText = "select bannedUUID from estateban where EstateID = ?EstateID";
                     cmd.Parameters.AddWithValue("?EstateID", es.EstateID);
 
-            IDataReader r = cmd.ExecuteReader();
+                    using (IDataReader r = cmd.ExecuteReader())
-
+                    {
                         while (r.Read())
                         {
                             EstateBan eb = new EstateBan();
@@ -319,15 +305,19 @@ namespace OpenSim.Data.MySQL
                             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();
+                dbcon.Open();
 
+                using (MySqlCommand cmd = dbcon.CreateCommand())
+                {
                     cmd.CommandText = "delete from estateban where EstateID = ?EstateID";
                     cmd.Parameters.AddWithValue("?EstateID", es.EstateID.ToString());
 
@@ -346,13 +336,17 @@ namespace OpenSim.Data.MySQL
                         cmd.Parameters.Clear();
                     }
                 }
+            }
+        }
 
         void SaveUUIDList(uint EstateID, string table, UUID[] data)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
+            {
-            MySqlCommand cmd = m_connection.CreateCommand();
+                dbcon.Open();
 
+                using (MySqlCommand cmd = dbcon.CreateCommand())
+                {
                     cmd.CommandText = "delete from " + table + " where EstateID = ?EstateID";
                     cmd.Parameters.AddWithValue("?EstateID", EstateID.ToString());
 
@@ -371,20 +365,24 @@ namespace OpenSim.Data.MySQL
                         cmd.Parameters.Clear();
                     }
                 }
+            }
+        }
 
         UUID[] LoadUUIDList(uint EstateID, string table)
         {
             List<UUID> uuids = new List<UUID>();
 
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
+            {
-            MySqlCommand cmd = m_connection.CreateCommand();
+                dbcon.Open();
 
+                using (MySqlCommand cmd = dbcon.CreateCommand())
+                {
                     cmd.CommandText = "select uuid from " + table + " where EstateID = ?EstateID";
                     cmd.Parameters.AddWithValue("?EstateID", EstateID);
 
-            IDataReader r = cmd.ExecuteReader();
+                    using (IDataReader r = cmd.ExecuteReader())
-
+                    {
                         while (r.Read())
                         {
                             // EstateBan eb = new EstateBan();
@@ -394,7 +392,9 @@ namespace OpenSim.Data.MySQL
 
                             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

@@ -54,13 +54,17 @@ 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();
+                    Migration m = new Migration(dbcon, GetType().Assembly, storeName);
                     m.Update();
                 }
+            }
 
             Type t = typeof(T);
             FieldInfo[] fields = t.GetFields(BindingFlags.Public |
@@ -107,8 +111,8 @@ 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]);
@@ -124,17 +128,24 @@ namespace OpenSim.Data.MySQL
                 
                 return DoQuery(cmd);
             }
+        }
 
         protected T[] DoQuery(MySqlCommand cmd)
         {
-            IDataReader reader = ExecuteReader(cmd);
+            List<T> result = new List<T>();
+
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+                cmd.Connection = dbcon;
+
+                using (IDataReader reader = cmd.ExecuteReader())
+                {
                     if (reader == null)
                         return new T[0];
 
                     CheckColumnNames(reader);
 
-            List<T> result = new List<T>();
-
                     while (reader.Read())
                     {
                         T row = new T();
@@ -181,15 +192,16 @@ namespace OpenSim.Data.MySQL
 
                         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}",
                                              m_Realm, where);
@@ -198,10 +210,12 @@ namespace OpenSim.Data.MySQL
                 
                 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>();
@@ -236,10 +250,12 @@ namespace OpenSim.Data.MySQL
 
                 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.Parameters.AddWithValue(field, val);
@@ -251,3 +267,4 @@ namespace OpenSim.Data.MySQL
             }
         }
     }
+}

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()
         {
@@ -106,57 +67,24 @@ 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");
+
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                Migration m = new Migration(dbcon, assem, "GridStore");
                 m.Update();
             }
+        }
 
         /// <summary>
         /// Shuts down the grid interface
         /// </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",
+                        dbcon.Open();
-                            param);
-                    IDataReader reader = result.ExecuteReader();
 
+                        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 = dbm.Manager.readSimRow(reader)) != null)
+                                while ((row = m_database.readSimRow(reader)) != null)
-                    {
                                     rows.Add(row);
-                    }
-                    reader.Close();
-                    result.Dispose();
 
                                 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",
+                    dbcon.Open();
-                        param);
-                IDataReader reader = result.ExecuteReader();
 
+                    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 = dbm.Manager.readSimRow(reader)) != null)
+                            while (rows.Count < maxNum && (row = m_database.readSimRow(reader)) != null)
-                {
                                 rows.Add(row);
-                }
-                reader.Close();
-                result.Dispose();
 
                             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();
 
-                    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);
-                    reader.Close();
-                    result.Dispose();
 
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM regions WHERE regionHandle = ?handle", param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            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();
 
-                    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);
-                    reader.Close();
-                    result.Dispose();
 
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM regions WHERE uuid = ?uuid", param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            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 + "%";
+
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
+
                         // Order by statement will return shorter matches first.  Only returns one record or no record.
-                    IDbCommand result =
+                        using (IDbCommand result = m_database.Query(dbcon,
-                        dbm.Manager.Query(
                             "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;
                             }
+                        }
+                    }
+                }
                 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))
             {
+                if (m_database.insertRegion(profile))
                     return DataResponse.RESPONSE_OK;
-                }
+                else
                     return DataResponse.RESPONSE_ERROR;
             }
-            finally
+            catch
             {
-                dbm.Release();
+                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))
             {
+                if (m_database.deleteRegion(uuid))
                     return DataResponse.RESPONSE_OK;
-                }
+                else
                     return DataResponse.RESPONSE_ERROR;
-            } finally
+            }
+            catch
             {
-                dbm.Release();
+                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["?y"] = y.ToString();
-                    IDbCommand result =
+
-                        dbm.Manager.Query(
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (IDbCommand result = m_database.Query(dbcon,
                         "SELECT * FROM reservations WHERE resXMin <= ?x AND resXMax >= ?x AND resYMin <= ?y AND resYMax >= ?y",
-                            param);
+                        param))
-                    IDataReader reader = result.ExecuteReader();
+                    {
-
+                        using (IDataReader reader = result.ExecuteReader())
-                    ReservationData row = dbm.Manager.readReservationRow(reader);
+                        {
-                    reader.Close();
+                            ReservationData row = m_database.readReservationRow(reader);
-                    result.Dispose();
-
                             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/MySQLInventoryData.cs

@@ -26,7 +26,6 @@
  */
 
 using System;
-using System.IO;
 using System.Collections.Generic;
 using System.Reflection;
 using log4net;
@@ -44,14 +43,10 @@ namespace OpenSim.Data.MySQL
         private static readonly ILog m_log
             = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        /// <summary>
+        private string m_connectionString;
-        /// The database manager
+        private object m_dbLock = new object();
-        /// </summary>
-        private MySQLManager database;
 
-        private bool rollbackStore = false;
+        public string Version { get { return "1.0.0.0"; } }
-        private bool opengridmode = false;
-        private string rollbackDir = "";
 
         public void Initialise()
         {
@@ -72,38 +67,18 @@ namespace OpenSim.Data.MySQL
         /// <param name="connect">connect string</param>
         public void Initialise(string connect)
         {
-            if (connect != String.Empty)
+            m_connectionString = connect;
-            {
-                database = new MySQLManager(connect);
-            }
-            else
-            {
-                m_log.Warn("Reverting to deprecated mysql_connection.ini file for connection info");
-                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");
-
-                rollbackDir = GridDataMySqlFile.ParseFileReadValue("rollbackdir");
-                rollbackStore = GridDataMySqlFile.ParseFileReadValue("rollback") == "true";
-                opengridmode = GridDataMySqlFile.ParseFileReadValue("opengridmode") == "true";
-
-                if (rollbackStore)
-                    m_log.Warn("[MysqlInventory] Enabling rollback mode in: " + rollbackDir);
-
-                database =
-                    new MySQLManager(settingHostname, settingDatabase, settingUsername, settingPassword, settingPooling,
-                                     settingPort);
-            }
 
             // This actually does the roll forward assembly stuff
             Assembly assem = GetType().Assembly;
-            Migration m = new Migration(database.Connection, assem, "InventoryStore");
+
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, assem, "InventoryStore");
                 m.Update();
             }
+        }
 
         /// <summary>
         /// The name of this DB provider
@@ -123,15 +98,6 @@ namespace OpenSim.Data.MySQL
             // Do nothing.
         }
 
-        /// <summary>
-        /// Returns the version of this DB provider
-        /// </summary>
-        /// <returns>A string containing the DB provider version</returns>
-        public string Version
-        {
-            get { return database.getVersion(); }
-        }
-
         /// <summary>
         /// Returns a list of items in a specified folder
         /// </summary>
@@ -141,18 +107,20 @@ namespace OpenSim.Data.MySQL
         {
             try
             {
-                lock (database)
+                lock (m_dbLock)
                 {
                     List<InventoryItemBase> items = new List<InventoryItemBase>();
 
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
-                    MySqlCommand result =
+                        using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryitems WHERE parentFolderID = ?uuid", dbcon))
-                        new MySqlCommand("SELECT * FROM inventoryitems WHERE parentFolderID = ?uuid",
+                        {
-                                         database.Connection);
                             result.Parameters.AddWithValue("?uuid", folderID.ToString());
-                    MySqlDataReader reader = result.ExecuteReader();
 
+                            using (MySqlDataReader reader = result.ExecuteReader())
+                            {
                                 while (reader.Read())
                                 {
                                     // A null item (because something went wrong) breaks everything in the folder
@@ -161,16 +129,15 @@ namespace OpenSim.Data.MySQL
                                         items.Add(item);
                                 }
 
-                    reader.Close();
-                    result.Dispose();
-
                                 return items;
                             }
                         }
+                    }
+                }
+            }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
         }
@@ -184,33 +151,33 @@ namespace OpenSim.Data.MySQL
         {
             try
             {
-                lock (database)
+                lock (m_dbLock)
                 {
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
-                    MySqlCommand result =
+                        using (MySqlCommand result = new MySqlCommand(
-                        new MySqlCommand(
+                            "SELECT * FROM inventoryfolders WHERE parentFolderID = ?zero AND agentID = ?uuid", dbcon))
-                            "SELECT * FROM inventoryfolders WHERE parentFolderID = ?zero AND agentID = ?uuid",
+                        {
-                            database.Connection);
                             result.Parameters.AddWithValue("?uuid", user.ToString());
                             result.Parameters.AddWithValue("?zero", UUID.Zero.ToString());
-                    MySqlDataReader reader = result.ExecuteReader();
 
+                            using (MySqlDataReader reader = result.ExecuteReader())
+                            {
                                 List<InventoryFolderBase> items = new List<InventoryFolderBase>();
                                 while (reader.Read())
                                     items.Add(readInventoryFolder(reader));
 
-
-                    reader.Close();
-                    result.Dispose();
-
                                 return items;
                             }
                         }
+                    }
+                }
+            }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
         }
@@ -225,19 +192,20 @@ namespace OpenSim.Data.MySQL
         {
             try
             {
-                lock (database)
+                lock (m_dbLock)
                 {
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
-                    MySqlCommand result =
+                        using (MySqlCommand result = new MySqlCommand(
-                        new MySqlCommand(
+                            "SELECT * FROM inventoryfolders WHERE parentFolderID = ?zero AND agentID = ?uuid", dbcon))
-                            "SELECT * FROM inventoryfolders WHERE parentFolderID = ?zero AND agentID = ?uuid",
+                        {
-                            database.Connection);
                             result.Parameters.AddWithValue("?uuid", user.ToString());
                             result.Parameters.AddWithValue("?zero", UUID.Zero.ToString());
 
-                    MySqlDataReader reader = result.ExecuteReader();
+                            using (MySqlDataReader reader = result.ExecuteReader())
-
+                            {
                                 List<InventoryFolderBase> items = new List<InventoryFolderBase>();
                                 while (reader.Read())
                                     items.Add(readInventoryFolder(reader));
@@ -250,21 +218,18 @@ namespace OpenSim.Data.MySQL
                                 // to put such a message out, and it's too minor right now to spare the time to
                                 // suitably refactor.
                                 if (items.Count > 0)
-                    {
                                     rootFolder = items[0];
-                    }
-
-                    reader.Close();
-                    result.Dispose();
 
                                 return rootFolder;
                             }
                         }
+                    }
+                }
+            }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
+                return null;
-                throw;
             }
         }
 
@@ -279,31 +244,31 @@ namespace OpenSim.Data.MySQL
         {
             try
             {
-                lock (database)
+                lock (m_dbLock)
                 {
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
-                    MySqlCommand result =
+                        using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE parentFolderID = ?uuid", dbcon))
-                        new MySqlCommand("SELECT * FROM inventoryfolders WHERE parentFolderID = ?uuid",
+                        {
-                                         database.Connection);
                             result.Parameters.AddWithValue("?uuid", parentID.ToString());
-                    MySqlDataReader reader = result.ExecuteReader();
+                            using (MySqlDataReader reader = result.ExecuteReader())
-
+                            {
                                 List<InventoryFolderBase> items = new List<InventoryFolderBase>();
 
                                 while (reader.Read())
                                     items.Add(readInventoryFolder(reader));
 
-                    reader.Close();
-                    result.Dispose();
-
                                 return items;
                             }
                         }
+                    }
+                }
+            }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
         }
@@ -378,29 +343,31 @@ namespace OpenSim.Data.MySQL
         {
             try
             {
-                lock (database)
+                lock (m_dbLock)
                 {
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
-                    MySqlCommand result =
+                        using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryitems WHERE inventoryID = ?uuid", dbcon))
-                        new MySqlCommand("SELECT * FROM inventoryitems WHERE inventoryID = ?uuid", database.Connection);
+                        {
                             result.Parameters.AddWithValue("?uuid", itemID.ToString());
-                    MySqlDataReader reader = result.ExecuteReader();
 
+                            using (MySqlDataReader reader = result.ExecuteReader())
+                            {
                                 InventoryItemBase item = null;
                                 if (reader.Read())
                                     item = readInventoryItem(reader);
 
-                    reader.Close();
-                    result.Dispose();
-
                                 return item;
                             }
                         }
+                    }
+                }
+            }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
             }
             return null;
         }
@@ -425,7 +392,7 @@ namespace OpenSim.Data.MySQL
             }
             catch (Exception e)
             {
-                m_log.Error(e.ToString());
+                m_log.Error(e.Message, e);
             }
 
             return null;
@@ -441,151 +408,35 @@ namespace OpenSim.Data.MySQL
         {
             try
             {
-                lock (database)
+                lock (m_dbLock)
                 {
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
-                    MySqlCommand result =
+                        using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE folderID = ?uuid", dbcon))
-                        new MySqlCommand("SELECT * FROM inventoryfolders WHERE folderID = ?uuid", database.Connection);
+                        {
                             result.Parameters.AddWithValue("?uuid", folderID.ToString());
-                    MySqlDataReader reader = result.ExecuteReader();
 
+                            using (MySqlDataReader reader = result.ExecuteReader())
+                            {
                                 InventoryFolderBase folder = null;
                                 if (reader.Read())
                                     folder = readInventoryFolder(reader);
-                    reader.Close();
-                    result.Dispose();
 
                                 return folder;
                             }
                         }
+                    }
+                }
+            }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
         }
 
-        #region Inventory Rollback-via-.sql Support
-        /// <summary>
-        /// Not a good SQL escape function, but it'll do the job (if mutilate the data.)
-        /// Someone may want to write something better here.
-        /// </summary>
-        /// <param name="str"></param>
-        /// <returns></returns>
-        private static string cheapSQLescape(string str)
-        {
-            str = str.Replace("\\", "");
-            str = str.Replace("'", "");
-            str = str.Replace("\"", "");
-            return "'" + str + "'";
-        }
-
-        private static string InventoryItemToSql(InventoryItemBase item)
-        {
-            string sql =
-                            "REPLACE /*! INVITEM AT ***$SUBS$*** */ INTO inventoryitems (inventoryID, assetID, assetType, parentFolderID, avatarID, inventoryName"
-                                + ", inventoryDescription, inventoryNextPermissions, inventoryCurrentPermissions, invType"
-                                + ", creatorID, inventoryBasePermissions, inventoryEveryOnePermissions, inventoryGroupPermissions, salePrice, saleType"
-                                + ", creationDate, groupID, groupOwned, flags) VALUES ";
-            sql +=
-                "(?inventoryID, ?assetID, ?assetType, ?parentFolderID, ?avatarID, ?inventoryName, ?inventoryDescription"
-                    + ", ?inventoryNextPermissions, ?inventoryCurrentPermissions, ?invType, ?creatorID"
-                    + ", ?inventoryBasePermissions, ?inventoryEveryOnePermissions, ?inventoryGroupPermissions, ?salePrice, ?saleType, ?creationDate"
-                    + ", ?groupID, ?groupOwned, ?flags);\r\n";
-
-            string itemName = item.Name;
-            string itemDesc = item.Description;
-
-            sql = sql.Replace("$SUBS$", Util.UnixTimeSinceEpoch().ToString());
-
-            sql = sql.Replace("?inventoryID", cheapSQLescape(item.ID.ToString()));
-            sql = sql.Replace("?assetID", cheapSQLescape(item.AssetID.ToString()));
-            sql = sql.Replace("?assetType", cheapSQLescape(item.AssetType.ToString()));
-            sql = sql.Replace("?parentFolderID", cheapSQLescape(item.Folder.ToString()));
-            sql = sql.Replace("?avatarID", cheapSQLescape(item.Owner.ToString()));
-            sql = sql.Replace("?inventoryName", cheapSQLescape(itemName));
-            sql = sql.Replace("?inventoryDescription", cheapSQLescape(itemDesc));
-            sql = sql.Replace("?inventoryNextPermissions", cheapSQLescape(item.NextPermissions.ToString()));
-            sql = sql.Replace("?inventoryCurrentPermissions", cheapSQLescape(item.CurrentPermissions.ToString()));
-            sql = sql.Replace("?invType", cheapSQLescape(item.InvType.ToString()));
-            sql = sql.Replace("?creatorID", cheapSQLescape(item.CreatorId));
-            sql = sql.Replace("?inventoryBasePermissions", cheapSQLescape(item.BasePermissions.ToString()));
-            sql = sql.Replace("?inventoryEveryOnePermissions", cheapSQLescape(item.EveryOnePermissions.ToString()));
-            sql = sql.Replace("?inventoryGroupPermissions", cheapSQLescape(item.GroupPermissions.ToString()));
-            sql = sql.Replace("?salePrice", cheapSQLescape(item.SalePrice.ToString()));
-            sql = sql.Replace("?saleType", cheapSQLescape(unchecked((sbyte)item.SaleType).ToString()));
-            sql = sql.Replace("?creationDate", cheapSQLescape(item.CreationDate.ToString()));
-            sql = sql.Replace("?groupID", cheapSQLescape(item.GroupID.ToString()));
-            sql = sql.Replace("?groupOwned", cheapSQLescape(item.GroupOwned.ToString()));
-            sql = sql.Replace("?flags", cheapSQLescape(item.Flags.ToString()));
-
-            return sql;
-        }
-
-        private static string InventoryFolderToSql(InventoryFolderBase folder)
-        {
-            string sql =
-                "REPLACE /*! INVFOLDER AT ***$SUBS$*** */ INTO inventoryfolders (folderID, agentID, parentFolderID, folderName, type, version) VALUES ";
-            sql += "(?folderID, ?agentID, ?parentFolderID, ?folderName, ?type, ?version);\r\n";
-
-            string folderName = folder.Name;
-
-            sql = sql.Replace("$SUBS$", Util.UnixTimeSinceEpoch().ToString());
-
-            sql = sql.Replace("?folderID", cheapSQLescape(folder.ID.ToString()));
-            sql = sql.Replace("?agentID", cheapSQLescape(folder.Owner.ToString()));
-            sql = sql.Replace("?parentFolderID", cheapSQLescape(folder.ParentID.ToString()));
-            sql = sql.Replace("?folderName", cheapSQLescape(folderName));
-            sql = sql.Replace("?type", cheapSQLescape(folder.Type.ToString()));
-            sql = sql.Replace("?version", cheapSQLescape(folder.Version.ToString()));
-
-            return sql;
-        }
-
-        private static string getRollbackFolderDate()
-        {
-            return DateTime.UtcNow.Year.ToString() + "-" + DateTime.UtcNow.Month.ToString() + "-" +
-                   DateTime.UtcNow.Day.ToString();
-        }
-
-        private void StoreRollbackItem(UUID ItemID)
-        {
-            if (rollbackStore == true)
-            {
-                string todaysPath = RollbackGetTodaysPath();
-
-                InventoryItemBase imb = getInventoryItem(ItemID);
-                string sql = InventoryItemToSql(imb);
-                File.AppendAllText(Path.Combine(todaysPath, imb.Owner.ToString()), sql);
-            }
-        }
-
-        private void StoreRollbackFolder(UUID FolderID)
-        {
-            if (rollbackStore == true)
-            {
-                string todaysPath = RollbackGetTodaysPath();
-
-                InventoryFolderBase ifb = getInventoryFolder(FolderID);
-                string sql = InventoryFolderToSql(ifb);
-                File.AppendAllText(Path.Combine(todaysPath, ifb.Owner.ToString()), sql);
-            }
-        }
-
-        private string RollbackGetTodaysPath()
-        {
-            if (!Directory.Exists(rollbackDir))
-                Directory.CreateDirectory(rollbackDir);
-
-            string todaysPath = Path.Combine(rollbackDir, getRollbackFolderDate());
-            if (!Directory.Exists(todaysPath))
-                Directory.CreateDirectory(todaysPath);
-            return todaysPath;
-        }
-        #endregion
-
         /// <summary>
         /// Adds a specified item to the database
         /// </summary>
@@ -619,9 +470,11 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                database.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                MySqlCommand result = new MySqlCommand(sql, database.Connection);
+                    MySqlCommand result = new MySqlCommand(sql, dbcon);
                     result.Parameters.AddWithValue("?inventoryID", item.ID.ToString());
                     result.Parameters.AddWithValue("?assetID", item.AssetID.ToString());
                     result.Parameters.AddWithValue("?assetType", item.AssetType.ToString());
@@ -644,22 +497,22 @@ namespace OpenSim.Data.MySQL
                     result.Parameters.AddWithValue("?groupOwned", item.GroupOwned);
                     result.Parameters.AddWithValue("?flags", item.Flags);
 
-                lock (database)
+                    lock (m_dbLock)
                     {
                         result.ExecuteNonQuery();
                     }
 
                     result.Dispose();
 
-                result = new MySqlCommand("update inventoryfolders set version=version+1 where folderID = ?folderID", database.Connection);
+                    result = new MySqlCommand("update inventoryfolders set version=version+1 where folderID = ?folderID", dbcon);
-                result.Parameters.AddWithValue("?folderID", item.Folder.ToString
+                    result.Parameters.AddWithValue("?folderID", item.Folder.ToString());
-());
+                    lock (m_dbLock)
-                lock (database)
                     {
                         result.ExecuteNonQuery();
                     }
                     result.Dispose();
                 }
+            }
             catch (MySqlException e)
             {
                 m_log.Error(e.ToString());
@@ -672,8 +525,6 @@ namespace OpenSim.Data.MySQL
         /// <param name="item">Inventory item to update</param>
         public void updateInventoryItem(InventoryItemBase item)
         {
-            StoreRollbackItem(item.ID);
-
             addInventoryItem(item);
         }
 
@@ -683,25 +534,24 @@ namespace OpenSim.Data.MySQL
         /// <param name="item">The inventory item UUID to delete</param>
         public void deleteInventoryItem(UUID itemID)
         {
-            StoreRollbackItem(itemID);
-
             try
             {
-                database.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                MySqlCommand cmd =
+                    MySqlCommand cmd = new MySqlCommand("DELETE FROM inventoryitems WHERE inventoryID=?uuid", dbcon);
-                    new MySqlCommand("DELETE FROM inventoryitems WHERE inventoryID=?uuid", database.Connection);
                     cmd.Parameters.AddWithValue("?uuid", itemID.ToString());
 
-                lock (database)
+                    lock (m_dbLock)
                     {
                         cmd.ExecuteNonQuery();
                     }
                 }
+            }
             catch (MySqlException e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
             }
         }
 
@@ -732,9 +582,11 @@ namespace OpenSim.Data.MySQL
                 m_log.Warn("[INVENTORY DB]: Name field truncated from " + folder.Name.Length + " to " + folderName.Length + " characters on add folder");
             }
 
-            database.CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
 
-            MySqlCommand cmd = new MySqlCommand(sql, database.Connection);
+                MySqlCommand cmd = new MySqlCommand(sql, dbcon);
                 cmd.Parameters.AddWithValue("?folderID", folder.ID.ToString());
                 cmd.Parameters.AddWithValue("?agentID", folder.Owner.ToString());
                 cmd.Parameters.AddWithValue("?parentFolderID", folder.ParentID.ToString());
@@ -744,7 +596,7 @@ namespace OpenSim.Data.MySQL
 
                 try
                 {
-                lock (database)
+                    lock (m_dbLock)
                     {
                         cmd.ExecuteNonQuery();
                     }
@@ -754,6 +606,7 @@ namespace OpenSim.Data.MySQL
                     m_log.Error(e.ToString());
                 }
             }
+        }
 
         /// <summary>
         /// Updates an inventory folder
@@ -761,7 +614,6 @@ namespace OpenSim.Data.MySQL
         /// <param name="folder">Folder to update</param>
         public void updateInventoryFolder(InventoryFolderBase folder)
         {
-            StoreRollbackFolder(folder.ID);
             addInventoryFolder(folder);
         }
 
@@ -772,20 +624,20 @@ namespace OpenSim.Data.MySQL
         /// <remarks>UPDATE inventoryfolders SET parentFolderID=?parentFolderID WHERE folderID=?folderID</remarks>
         public void moveInventoryFolder(InventoryFolderBase folder)
         {
-            StoreRollbackFolder(folder.ID);
-
             string sql =
                 "UPDATE inventoryfolders SET parentFolderID=?parentFolderID WHERE folderID=?folderID";
 
-            database.CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
 
-            MySqlCommand cmd = new MySqlCommand(sql, database.Connection);
+                MySqlCommand cmd = new MySqlCommand(sql, dbcon);
                 cmd.Parameters.AddWithValue("?folderID", folder.ID.ToString());
                 cmd.Parameters.AddWithValue("?parentFolderID", folder.ParentID.ToString());
 
                 try
                 {
-                lock (database)
+                    lock (m_dbLock)
                     {
                         cmd.ExecuteNonQuery();
                     }
@@ -795,6 +647,7 @@ namespace OpenSim.Data.MySQL
                     m_log.Error(e.ToString());
                 }
             }
+        }
 
         /// <summary>
         /// Append a list of all the child folders of a parent folder
@@ -836,54 +689,60 @@ namespace OpenSim.Data.MySQL
             try
             {
                 List<InventoryFolderBase> folders = new List<InventoryFolderBase>();
-                Dictionary<UUID, List<InventoryFolderBase>> hashtable
+                Dictionary<UUID, List<InventoryFolderBase>> hashtable = new Dictionary<UUID, List<InventoryFolderBase>>(); ;
-                    = new Dictionary<UUID, List<InventoryFolderBase>>(); ;
                 List<InventoryFolderBase> parentFolder = new List<InventoryFolderBase>();
-                lock (database)
-                {
-                    MySqlCommand result;
-                    MySqlDataReader reader;
                 bool buildResultsFromHashTable = false;
 
-                    database.CheckConnection();
+                lock (m_dbLock)
+                {
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                    {
+                        dbcon.Open();
 
                         /* Fetch the parent folder from the database to determine the agent ID, and if
                          * we're querying the root of the inventory folder tree */
-                    result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE folderID = ?uuid",
+                        using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE folderID = ?uuid", dbcon))
-                                              database.Connection);
+                        {
                             result.Parameters.AddWithValue("?uuid", parentID.ToString());
-                    reader = result.ExecuteReader();
+
-                    while (reader.Read())          // Should be at most 1 result
+                            using (MySqlDataReader reader = result.ExecuteReader())
+                            {
+                                // Should be at most 1 result
+                                while (reader.Read())
                                     parentFolder.Add(readInventoryFolder(reader));
-                    reader.Close();
+                            }
-                    result.Dispose();
+                        }
 
                         if (parentFolder.Count >= 1)   // No result means parent folder does not exist
                         {
                             if (parentFolder[0].ParentID == UUID.Zero) // We are querying the root folder
                             {
                                 /* Get all of the agent's folders from the database, put them in a list and return it */
-                            result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE agentID = ?uuid",
+                                using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE agentID = ?uuid", dbcon))
-                                                      database.Connection);
+                                {
                                     result.Parameters.AddWithValue("?uuid", parentFolder[0].Owner.ToString());
-                            reader = result.ExecuteReader();
+
+                                    using (MySqlDataReader reader = result.ExecuteReader())
+                                    {
                                         while (reader.Read())
                                         {
                                             InventoryFolderBase curFolder = readInventoryFolder(reader);
                                             if (curFolder.ID != parentID) // Do not need to add the root node of the tree to the list
                                                 folders.Add(curFolder);
                                         }
-                            reader.Close();
+                                    }
-                            result.Dispose();
+                                }
                             } // if we are querying the root folder
                             else // else we are querying a subtree of the inventory folder tree
                             {
                                 /* Get all of the agent's folders from the database, put them all in a hash table
                                  * indexed by their parent ID */
-                            result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE agentID = ?uuid",
+                                using (MySqlCommand result = new MySqlCommand("SELECT * FROM inventoryfolders WHERE agentID = ?uuid", dbcon))
-                                                      database.Connection);
+                                {
                                     result.Parameters.AddWithValue("?uuid", parentFolder[0].Owner.ToString());
-                            reader = result.ExecuteReader();
+
+                                    using (MySqlDataReader reader = result.ExecuteReader())
+                                    {
                                         while (reader.Read())
                                         {
                                             InventoryFolderBase curFolder = readInventoryFolder(reader);
@@ -897,8 +756,8 @@ namespace OpenSim.Data.MySQL
                                                 hashtable.Add(curFolder.ParentID, siblingList);
                                             }
                                         } // while more items to read from the database
-                            reader.Close();
+                                    }
-                            result.Dispose();
+                                }
 
                                 // Set flag so we know we need to build the results from the hash table after
                                 // we unlock the database
@@ -918,13 +777,14 @@ namespace OpenSim.Data.MySQL
                                 if (hashtable.ContainsKey(folders[i].ID))
                                     folders.AddRange(hashtable[folders[i].ID]);
                         }
+                    }
                 } // lock (database)
+
                 return folders;
             }
             catch (Exception e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
                 return null;
             }
         }
@@ -935,25 +795,24 @@ namespace OpenSim.Data.MySQL
         /// <param name="folderID">the folder UUID</param>
         protected void deleteOneFolder(UUID folderID)
         {
-            StoreRollbackFolder(folderID);
-
             try
             {
-                database.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                MySqlCommand cmd =
+                    using (MySqlCommand cmd = new MySqlCommand("DELETE FROM inventoryfolders WHERE folderID=?uuid", dbcon))
-                    new MySqlCommand("DELETE FROM inventoryfolders WHERE folderID=?uuid", database.Connection);
+                    {
                         cmd.Parameters.AddWithValue("?uuid", folderID.ToString());
 
-                lock (database)
+                        lock (m_dbLock)
-                {
                             cmd.ExecuteNonQuery();
                     }
                 }
+            }
             catch (MySqlException e)
             {
-                database.Reconnect();
+                m_log.Error(e.Message, e);
-                m_log.Error(e.ToString());
             }
         }
 
@@ -963,30 +822,23 @@ namespace OpenSim.Data.MySQL
         /// <param name="folderID">the folder UUID</param>
         protected void deleteItemsInFolder(UUID folderID)
         {
-            if (rollbackStore)
-            {
-                foreach (InventoryItemBase itemBase in getInventoryInFolder(folderID))
-                {
-                    StoreRollbackItem(itemBase.ID);
-                }
-            }
-
             try
             {
-                database.CheckConnection();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                MySqlCommand cmd =
+                    using (MySqlCommand cmd = new MySqlCommand("DELETE FROM inventoryitems WHERE parentFolderID=?uuid", dbcon))
-                    new MySqlCommand("DELETE FROM inventoryitems WHERE parentFolderID=?uuid", database.Connection);
+                    {
                         cmd.Parameters.AddWithValue("?uuid", folderID.ToString());
 
-                lock (database)
+                        lock (m_dbLock)
-                {
                             cmd.ExecuteNonQuery();
                     }
                 }
+            }
             catch (MySqlException e)
             {
-                database.Reconnect();
                 m_log.Error(e.ToString());
             }
         }
@@ -999,60 +851,36 @@ namespace OpenSim.Data.MySQL
         {
             List<InventoryFolderBase> subFolders = getFolderHierarchy(folderID);
 
-            // Dont delete in OGM - makes for easier restores if someone sends a malcious command. (just restore the folder entry)
-            if (opengridmode == false)
-            {
             //Delete all sub-folders
             foreach (InventoryFolderBase f in subFolders)
             {
-                    StoreRollbackFolder(f.ID);
                 deleteOneFolder(f.ID);
-
-                    if (rollbackStore)
-                    {
-                        foreach (InventoryItemBase itemBase in getInventoryInFolder(f.ID))
-                        {
-                            StoreRollbackItem(itemBase.ID);
-                        }
-                    }
                 deleteItemsInFolder(f.ID);
             }
-            }
 
-            StoreRollbackFolder(folderID);
             //Delete the actual row
             deleteOneFolder(folderID);
-
-            // Just delete the folder context in OGM
-            if (opengridmode == false)
-            {
-                if (rollbackStore)
-                {
-                    foreach (InventoryItemBase itemBase in getInventoryInFolder(folderID))
-                    {
-                        StoreRollbackItem(itemBase.ID);
-                    }
-                }
             deleteItemsInFolder(folderID);
         }
-        }
         
         public List<InventoryItemBase> fetchActiveGestures(UUID avatarID)
         {
-            MySqlDataReader result = null;
+            lock (m_dbLock)
-            MySqlCommand sqlCmd = null;
-            lock (database)
             {
                 try
                 {
-                    database.CheckConnection();
+                    using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-                    sqlCmd = new MySqlCommand(
+                    {
-                        "SELECT * FROM inventoryitems WHERE avatarId = ?uuid AND assetType = ?type and flags = 1",
+                        dbcon.Open();
-                        database.Connection);
+
+                        using (MySqlCommand sqlCmd = new MySqlCommand(
+                            "SELECT * FROM inventoryitems WHERE avatarId = ?uuid AND assetType = ?type and flags = 1", dbcon))
+                        {
                             sqlCmd.Parameters.AddWithValue("?uuid", avatarID.ToString());
                             sqlCmd.Parameters.AddWithValue("?type", (int)AssetType.Gesture);
-                    result = sqlCmd.ExecuteReader();
 
+                            using (MySqlDataReader result = sqlCmd.ExecuteReader())
+                            {
                                 List<InventoryItemBase> list = new List<InventoryItemBase>();
                                 while (result.Read())
                                 {
@@ -1062,17 +890,14 @@ namespace OpenSim.Data.MySQL
                                 }
                                 return list;
                             }
+                        }
+                    }
+                }
                 catch (Exception e)
                 {
-                    database.Reconnect();
+                    m_log.Error(e.Message, e);
-                    m_log.Error(e.ToString());
                     return null;
                 }
-                finally
-                {
-                    if (result != null) result.Close();
-                    if (sqlCmd != null) sqlCmd.Dispose();
-                }
             }
         }
     }

OpenSim/Data/MySQL/MySQLLegacyRegionData.cs

@@ -48,109 +48,70 @@ namespace OpenSim.Data.MySQL
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        private string m_ConnectionString;
+        private string m_connectionString;
-
+        private object m_dbLock = new object();
-        private MySqlConnection m_Connection = null;
 
         public void Initialise(string connectionString)
         {
-            m_ConnectionString = connectionString;
+            m_connectionString = connectionString;
 
-            m_Connection = new MySqlConnection(m_ConnectionString);
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
-
+            {
-            m_Connection.Open();
+                dbcon.Open();
 
                 // Apply new Migrations
                 //
                 Assembly assem = GetType().Assembly;
-            Migration m = new Migration(m_Connection, assem, "RegionStore");
+                Migration m = new Migration(dbcon, assem, "RegionStore");
                 m.Update();
 
-            // NOTE: This is a very slow query that times out on regions with a lot of prims.
-            // I'm told that it is no longer relevant so it's commented out now, but if it
-            // is relevant it should be added as a console command instead of part of the
-            // startup phase
                 // Clean dropped attachments
                 //
-            //try
+                try
-            //{
+                {
-            //    using (MySqlCommand cmd = m_Connection.CreateCommand())
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
-            //    {
+                    {
-            //        cmd.CommandText = "delete from prims, primshapes using prims " +
+                        cmd.CommandText = "delete from prims, primshapes using prims " +
-            //                "left join primshapes on prims.uuid = primshapes.uuid " +
+                                "left join primshapes on prims.uuid = primshapes.uuid " +
-            //                "where PCode = 9 and State <> 0";
+                                "where PCode = 9 and State <> 0";
-            //        ExecuteNonQuery(cmd);
+                        ExecuteNonQuery(cmd);
-            //    }
+                    }
-            //}
+                }
-            //catch (MySqlException ex)
+                catch (MySqlException ex)
-            //{
+                {
-            //    m_log.Error("[REGION DB]: Error cleaning up dropped attachments: " + ex.Message);
+                    m_log.Error("[REGION DB]: Error cleaning up dropped attachments: " + ex.Message);
-            //}
+                }
+            }
         }
 
         private IDataReader ExecuteReader(MySqlCommand c)
         {
             IDataReader r = null;
-            bool errorSeen = false;
 
-            while (true)
-            {
             try
             {
                 r = c.ExecuteReader();
             }
-                catch (Exception)
+            catch (Exception e)
             {
-                    Thread.Sleep(500);
+                m_log.Error("[REGION DB]: MySQL error in ExecuteReader: " + e.Message);
-
-                    m_Connection.Close();
-                    m_Connection = (MySqlConnection) ((ICloneable)m_Connection).Clone();
-                    m_Connection.Open();
-                    c.Connection = m_Connection;
-
-                    if (!errorSeen)
-                    {
-                        errorSeen = true;
-                        continue;
-                    }
                 throw;
             }
 
-                break;
-            }
-
             return r;
         }
 
         private void ExecuteNonQuery(MySqlCommand c)
-        {
-            bool errorSeen = false;
-
-            while (true)
         {
             try
             {
                 c.ExecuteNonQuery();
             }
-                catch (Exception)
+            catch (Exception e)
             {
-                    Thread.Sleep(500);
+                m_log.Error("[REGION DB]: MySQL error in ExecuteNonQuery: " + e.Message);
-
-                    m_Connection.Close();
-                    m_Connection = (MySqlConnection) ((ICloneable)m_Connection).Clone();
-                    m_Connection.Open();
-                    c.Connection = m_Connection;
-
-                    if (!errorSeen)
-                    {
-                        errorSeen = true;
-                        continue;
-                    }
                 throw;
             }
-
-                break;
-            }
         }
 
         public void Dispose() {}
@@ -166,9 +127,12 @@ namespace OpenSim.Data.MySQL
             if ((flags & (uint)PrimFlags.TemporaryOnRez) != 0)
                 return;
 
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                MySqlCommand cmd = m_Connection.CreateCommand();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+                    MySqlCommand cmd = dbcon.CreateCommand();
 
                     foreach (SceneObjectPart prim in obj.Children.Values)
                     {
@@ -277,6 +241,7 @@ namespace OpenSim.Data.MySQL
                     cmd.Dispose();
                 }
             }
+        }
 
         public void RemoveObject(UUID obj, UUID regionUUID)
         {
@@ -290,9 +255,13 @@ namespace OpenSim.Data.MySQL
             // cause the loss of a prim, but is cleaner.
             // It's also faster because it uses the primary key.
             //
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "select UUID from prims where SceneGroupID= ?UUID";
                         cmd.Parameters.AddWithValue("UUID", obj.ToString());
@@ -308,6 +277,7 @@ namespace OpenSim.Data.MySQL
                         ExecuteNonQuery(cmd);
                     }
                 }
+            }
 
             // there is no way this should be < 1 unless there is
             // a very corrupt database, but in that case be extra
@@ -326,9 +296,13 @@ namespace OpenSim.Data.MySQL
         /// <param name="uuid">the Item UUID</param>
         private void RemoveItems(UUID uuid)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "delete from primitems where PrimID = ?PrimID";
                         cmd.Parameters.AddWithValue("PrimID", uuid.ToString());
@@ -337,6 +311,7 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         /// <summary>
         /// Remove all persisted shapes for a list of prims
@@ -345,11 +320,14 @@ namespace OpenSim.Data.MySQL
         /// <param name="uuids">the list of UUIDs</param>
         private void RemoveShapes(List<UUID> uuids)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
                 string sql = "delete from primshapes where ";
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         for (int i = 0; i < uuids.Count; i++)
                         {
@@ -371,6 +349,7 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         /// <summary>
         /// Remove all persisted items for a list of prims
@@ -379,11 +358,14 @@ namespace OpenSim.Data.MySQL
         /// <param name="uuids">the list of UUIDs</param>
         private void RemoveItems(List<UUID> uuids)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
                 string sql = "delete from primitems where ";
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
 
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         for (int i = 0; i < uuids.Count; i++)
                         {
@@ -406,6 +388,7 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         public List<SceneObjectGroup> LoadObjects(UUID regionID)
         {
@@ -417,9 +400,13 @@ namespace OpenSim.Data.MySQL
 
             #region Prim Loading
 
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText =
                             "SELECT * FROM prims LEFT JOIN primshapes ON prims.UUID = primshapes.UUID WHERE RegionUUID = ?RegionUUID";
@@ -448,6 +435,7 @@ namespace OpenSim.Data.MySQL
                         }
                     }
                 }
+            }
 
             #endregion Prim Loading
 
@@ -497,9 +485,13 @@ namespace OpenSim.Data.MySQL
             // list from DB of all prims which have items and
             // LoadItems only on those
             List<SceneObjectPart> primsWithInventory = new List<SceneObjectPart>();
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand itemCmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand itemCmd = dbcon.CreateCommand())
                     {
                         itemCmd.CommandText = "SELECT DISTINCT primID FROM primitems";
                         using (IDataReader itemReader = ExecuteReader(itemCmd))
@@ -516,6 +508,7 @@ namespace OpenSim.Data.MySQL
                         }
                     }
                 }
+            }
 
             foreach (SceneObjectPart prim in primsWithInventory)
             {
@@ -535,11 +528,15 @@ namespace OpenSim.Data.MySQL
         /// <param name="prim">The prim</param>
         private void LoadItems(SceneObjectPart prim)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
                 List<TaskInventoryItem> inventory = new List<TaskInventoryItem>();
 
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "select * from primitems where PrimID = ?PrimID";
                         cmd.Parameters.AddWithValue("PrimID", prim.UUID.ToString());
@@ -555,6 +552,7 @@ namespace OpenSim.Data.MySQL
                             }
                         }
                     }
+                }
 
                 prim.Inventory.RestoreInventoryItems(inventory);
             }
@@ -564,9 +562,13 @@ namespace OpenSim.Data.MySQL
         {
             m_log.Info("[REGION DB]: Storing terrain");
 
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "delete from terrain where RegionUUID = ?RegionUUID";
                         cmd.Parameters.AddWithValue("RegionUUID", regionID.ToString());
@@ -583,14 +585,19 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         public double[,] LoadTerrain(UUID regionID)
         {
             double[,] terrain = null;
 
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "select RegionUUID, Revision, Heightfield " +
                             "from terrain where RegionUUID = ?RegionUUID " +
@@ -625,15 +632,20 @@ namespace OpenSim.Data.MySQL
                         }
                     }
                 }
+            }
 
             return terrain;
         }
 
         public void RemoveLandObject(UUID globalID)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "delete from land where UUID = ?UUID";
                         cmd.Parameters.AddWithValue("UUID", globalID.ToString());
@@ -642,12 +654,17 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         public void StoreLandObject(ILandObject parcel)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "replace into land (UUID, RegionUUID, " +
                             "LocalLandID, Bitmap, Name, Description, " +
@@ -692,14 +709,19 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         public RegionSettings LoadRegionSettings(UUID regionUUID)
         {
             RegionSettings rs = null;
 
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "select * from regionsettings where regionUUID = ?RegionUUID";
                         cmd.Parameters.AddWithValue("regionUUID", regionUUID);
@@ -722,15 +744,20 @@ namespace OpenSim.Data.MySQL
                         }
                     }
                 }
+            }
 
             return rs;
         }
 
         public void StoreRegionSettings(RegionSettings rs)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "replace into regionsettings (regionUUID, " +
                             "block_terraform, block_fly, allow_damage, " +
@@ -771,14 +798,19 @@ namespace OpenSim.Data.MySQL
                     }
                 }
             }
+        }
 
         public List<LandData> LoadLandObjects(UUID regionUUID)
         {
             List<LandData> landData = new List<LandData>();
 
-            lock (m_Connection)
+            lock (m_dbLock)
             {
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         cmd.CommandText = "select * from land where RegionUUID = ?RegionUUID";
                         cmd.Parameters.AddWithValue("RegionUUID", regionUUID.ToString());
@@ -793,7 +825,7 @@ namespace OpenSim.Data.MySQL
                         }
                     }
 
-                using (MySqlCommand cmd = m_Connection.CreateCommand())
+                    using (MySqlCommand cmd = dbcon.CreateCommand())
                     {
                         foreach (LandData land in landData)
                         {
@@ -811,6 +843,7 @@ namespace OpenSim.Data.MySQL
                         }
                     }
                 }
+            }
 
             return landData;
         }
@@ -1513,11 +1546,15 @@ namespace OpenSim.Data.MySQL
 
         public void StorePrimInventory(UUID primID, ICollection<TaskInventoryItem> items)
         {
-            lock (m_Connection)
+            lock (m_dbLock)
             {
                 RemoveItems(primID);
 
-                MySqlCommand cmd = m_Connection.CreateCommand();
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
+                    MySqlCommand cmd = dbcon.CreateCommand();
 
                     if (items.Count == 0)
                         return;
@@ -1552,3 +1589,4 @@ namespace OpenSim.Data.MySQL
             }
         }
     }
+}

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");
+
+            using (MySql.Data.MySqlClient.MySqlConnection dbcon = new MySql.Data.MySqlClient.MySqlConnection(connect))
+            {
+                dbcon.Open();
+
+                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)
                 {
@@ -134,8 +131,12 @@ namespace OpenSim.Data.MySQL
         /// </summary>
         protected void GetWaitTimeout()
         {
-            MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect, dbcon);
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+            {
+                dbcon.Open();
 
+                using (MySqlCommand cmd = new MySqlCommand(m_waitTimeoutSelect, dbcon))
+                {
                     using (MySqlDataReader dbReader = cmd.ExecuteReader(CommandBehavior.SingleRow))
                     {
                         if (dbReader.Read())
@@ -143,9 +144,8 @@ namespace OpenSim.Data.MySQL
                             m_waitTimeout
                                 = Convert.ToInt32(dbReader["@@wait_timeout"]) * TimeSpan.TicksPerSecond + m_waitTimeoutLeeway;
                         }
-
+                    }
-                dbReader.Close();
+                }
-                cmd.Dispose();
             }
 
             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>
@@ -264,10 +207,14 @@ namespace OpenSim.Data.MySQL
         /// <param name="name">name of embedded resource</param>
         public void ExecuteResourceSql(string name)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+            {
+                dbcon.Open();
+
                 MySqlCommand cmd = new MySqlCommand(getResourceString(name), dbcon);
                 cmd.ExecuteNonQuery();
             }
+        }
 
         /// <summary>
         /// Execute a MySqlCommand
@@ -275,14 +222,20 @@ namespace OpenSim.Data.MySQL
         /// <param name="sql">sql string to execute</param>
         public void ExecuteSql(string sql)
         {
-            CheckConnection();
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+            {
+                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))
+            {
+                dbcon.Open();
 
                 MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand();
                 cmd.CommandText = sql;
@@ -292,6 +245,7 @@ namespace OpenSim.Data.MySQL
                 }
                 cmd.ExecuteNonQuery();
             }
+        }
 
         /// <summary>
         /// Given a list of tables, return the version of the tables, as seen in the database
@@ -299,14 +253,15 @@ 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))
+                {
+                    dbcon.Open();
 
-                MySqlCommand tablesCmd =
+                    using (MySqlCommand tablesCmd = new MySqlCommand(
-                    new MySqlCommand(
+                        "SELECT TABLE_NAME, TABLE_COMMENT FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=?dbname", dbcon))
-                        "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())
@@ -324,10 +279,11 @@ namespace OpenSim.Data.MySQL
                                 }
                                 catch (Exception e)
                                 {
-                            m_log.Error(e.ToString());
+                                    m_log.Error(e.Message, e);
+                                }
+                            }
                         }
                     }
-                    tables.Close();
                 }
             }
         }
@@ -337,15 +293,14 @@ 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();
                 dbcommand.CommandText = sql;
                 foreach (KeyValuePair<string, object> param in parameters)
@@ -358,7 +313,7 @@ namespace OpenSim.Data.MySQL
             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;
         }
 
@@ -727,13 +680,18 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
 
                     if (result.ExecuteNonQuery() == 1)
                         returnval = true;
 
                     result.Dispose();
                 }
+            }
             catch (Exception e)
             {
                 m_log.Error(e.ToString());
@@ -828,13 +786,18 @@ namespace OpenSim.Data.MySQL
                 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
 
                     if (result.ExecuteNonQuery() == 1)
                         returnval = true;
 
                     result.Dispose();
                 }
+            }
             catch (Exception e)
             {
                 m_log.Error(e.ToString());
@@ -927,13 +890,18 @@ namespace OpenSim.Data.MySQL
             bool returnval = false;
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
 
                     if (result.ExecuteNonQuery() == 1)
                         returnval = true;
 
                     result.Dispose();
                 }
+            }
             catch (Exception e)
             {
                 m_log.Error(e.ToString());
@@ -1030,7 +998,11 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
 
                     // int x;
                     // if ((x = result.ExecuteNonQuery()) > 0)
@@ -1043,6 +1015,7 @@ namespace OpenSim.Data.MySQL
                     }
                     result.Dispose();
                 }
+            }
             catch (Exception e)
             {
                 m_log.Error(e.ToString());
@@ -1070,7 +1043,11 @@ namespace OpenSim.Data.MySQL
             {
                 parameters["?uuid"] = uuid;
 
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
 
                     // int x;
                     // if ((x = result.ExecuteNonQuery()) > 0)
@@ -1083,6 +1060,7 @@ namespace OpenSim.Data.MySQL
                     }
                     result.Dispose();
                 }
+            }
             catch (Exception e)
             {
                 m_log.Error(e.ToString());
@@ -1122,7 +1100,11 @@ namespace OpenSim.Data.MySQL
 
             try
             {
-                IDbCommand result = Query(sql, parameters);
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    IDbCommand result = Query(dbcon, sql, parameters);
 
                     // int x;
                     // if ((x = result.ExecuteNonQuery()) > 0)
@@ -1135,6 +1117,7 @@ namespace OpenSim.Data.MySQL
                     }
                     result.Dispose();
                 }
+            }
             catch (Exception e)
             {
                 m_log.Error(e.ToString());
@@ -1167,8 +1150,14 @@ 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();
+            {
+                using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+                {
+                    dbcon.Open();
+
+                    using (MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand())
+                    {
                         cmd.CommandText = sql;
                         cmd.Parameters.AddWithValue("?owner", appearance.Owner.ToString());
                         cmd.Parameters.AddWithValue("?serial", appearance.Serial);
@@ -1204,8 +1193,8 @@ namespace OpenSim.Data.MySQL
 
                         if (cmd.ExecuteNonQuery() > 0)
                             returnval = true;
-
+                    }
-                cmd.Dispose();
+                }
             }
             catch (Exception e)
             {
@@ -1221,6 +1210,10 @@ namespace OpenSim.Data.MySQL
         {
             string sql = "delete from avatarattachments where UUID = ?uuid";
 
+            using (MySqlConnection dbcon = new MySqlConnection(connectionString))
+            {
+                dbcon.Open();
+
                 MySqlCommand cmd = (MySqlCommand)dbcon.CreateCommand();
                 cmd.CommandText = sql;
                 cmd.Parameters.AddWithValue("?uuid", agentID.ToString());
@@ -1252,3 +1245,4 @@ namespace OpenSim.Data.MySQL
             }
         }
     }
+}

OpenSim/Data/MySQL/MySQLRegionData.cs

@@ -38,17 +38,22 @@ 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))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, GetType().Assembly, "GridStore");
                 m.Update();
             }
+        }
 
         public List<RegionData> Get(string regionName, UUID scopeID)
         {
@@ -56,13 +61,14 @@ 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());
 
                 return RunCommand(cmd);
             }
+        }
 
         public RegionData Get(int posX, int posY, UUID scopeID)
         {
@@ -70,8 +76,8 @@ 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());
@@ -82,6 +88,7 @@ namespace OpenSim.Data.MySQL
 
                 return ret[0];
             }
+        }
 
         public RegionData Get(UUID regionID, UUID scopeID)
         {
@@ -89,8 +96,8 @@ 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());
 
@@ -100,6 +107,7 @@ namespace OpenSim.Data.MySQL
 
                 return ret[0];
             }
+        }
 
         public List<RegionData> Get(int startX, int startY, int endX, int endY, UUID scopeID)
         {
@@ -107,8 +115,8 @@ 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());
@@ -117,13 +125,19 @@ namespace OpenSim.Data.MySQL
 
                 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))
+            {
+                dbcon.Open();
+                cmd.Connection = dbcon;
 
+                using (IDataReader result = cmd.ExecuteReader())
+                {
                     while (result.Read())
                     {
                         RegionData ret = new RegionData();
@@ -171,9 +185,8 @@ namespace OpenSim.Data.MySQL
 
                         retList.Add(ret);
                     }
-
+                }
-            result.Close();
+            }
-            CloseReaderCommand(cmd);
 
             return retList;
         }
@@ -201,8 +214,8 @@ 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)
                 {
@@ -236,41 +249,37 @@ namespace OpenSim.Data.MySQL
 
                     if (ExecuteNonQuery(cmd) < 1)
                     {
-                    cmd.Dispose();
                         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)
                     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)
                     return true;
+            }
 
             return false;
         }

OpenSim/Data/MySQL/MySQLUserAccountData.cs

@@ -38,17 +38,22 @@ 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))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, GetType().Assembly, "UserStore");
                 m.Update();
             }
+        }
 
         public List<UserAccountData> Query(UUID principalID, UUID scopeID, string query)
         {
@@ -64,12 +69,15 @@ namespace OpenSim.Data.MySQL
             if (scopeID != UUID.Zero)
                 command += " and ScopeID = ?scopeID";
 
-            MySqlCommand cmd = new MySqlCommand(command);
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+                MySqlCommand cmd = new MySqlCommand(command, dbcon);
 
                 cmd.Parameters.AddWithValue("?principalID", principalID.ToString());
                 cmd.Parameters.AddWithValue("?scopeID", scopeID.ToString());
 
-            IDataReader result = ExecuteReader(cmd);
+                IDataReader result = cmd.ExecuteReader();
 
                 if (result.Read())
                 {
@@ -97,17 +105,14 @@ namespace OpenSim.Data.MySQL
                         ret.Data[s] = result[s].ToString();
                     }
 
-                result.Close();
-                CloseReaderCommand(cmd);
-
                     return ret;
                 }
-
+                else
-            result.Close();
+                {
-            CloseReaderCommand(cmd);
-
                     return null;
                 }
+            }
+        }
 
         public bool Store(UserAccountData data)
         {
@@ -118,8 +123,8 @@ 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)
@@ -156,23 +161,22 @@ namespace OpenSim.Data.MySQL
                         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)
                     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
@@ -115,56 +74,19 @@ 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");
 
+            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())
+                        {
+                            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 =
+                    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();
                     }
+                }
+            }
             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();
                     }
+
+                    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(
+                {
+                    dbcon.Open();
+
+                    using (IDbCommand updater = m_database.Query(dbcon,
                             "update " + m_userFriendsTableName +
                             " SET friendPerms = ?friendPerms " +
                             "where ownerID = ?ownerID and friendID = ?friendID",
-                        param);
+                            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)
@@ -322,19 +240,21 @@ namespace OpenSim.Data.MySQL
             Dictionary<string, object> param = new Dictionary<string, object>();
             param["?ownerID"] = friendlistowner.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("GetUserFriendList");
-
             try
             {
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
                     //Left Join userfriends to itself
-                IDbCommand result =
+                    using (IDbCommand result = m_database.Query(dbcon,
-                    dbm.Manager.Query(
                         "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();
@@ -347,40 +267,39 @@ namespace OpenSim.Data.MySQL
 
                                 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
             {
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+
                     foreach (UUID uuid in uuids)
                     {
                         Dictionary<string, object> param = new Dictionary<string, object>();
                         param["?uuid"] = uuid.ToString();
-                    IDbCommand result =
-                        dbm.Manager.Query("select agentOnline,currentHandle from " + m_agentsTableName +
-                                          " where UUID = ?uuid", param);
 
-                    IDataReader reader = result.ExecuteReader();
+                        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();
@@ -389,20 +308,15 @@ namespace OpenSim.Data.MySQL
 
                                     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;
@@ -423,17 +337,20 @@ 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())
                                 {
                                     AvatarPickerAvatar user = new AvatarPickerAvatar();
@@ -442,36 +359,34 @@ namespace OpenSim.Data.MySQL
                                     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())
                                 {
                                     AvatarPickerAvatar user = new AvatarPickerAvatar();
@@ -480,19 +395,15 @@ namespace OpenSim.Data.MySQL
                                     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);
-
-                reader.Dispose();
-                result.Dispose();
 
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM " + m_usersTableName + " WHERE UUID = ?uuid", param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            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();
-            }
         }
 
         /// <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 " +
                     "where UUID = ?UUID",
                     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);
-
-                reader.Dispose();
-                result.Dispose();
 
+                    using (IDbCommand result = m_database.Query(dbcon, "SELECT * FROM " + m_agentsTableName + " WHERE UUID = ?uuid", param))
+                    {
+                        using (IDataReader reader = result.ExecuteReader())
+                        {
+                            UserAgentData row = m_database.readAgentRow(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>
@@ -634,11 +532,11 @@ 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.ID, user.FirstName, user.SurName, user.Email, user.PasswordHash, user.PasswordSalt,
                     user.HomeRegion, user.HomeRegionID, user.HomeLocation.X, user.HomeLocation.Y,
                     user.HomeLocation.Z,
                     user.HomeLookAt.X, user.HomeLookAt.Y, user.HomeLookAt.Z, user.Created,
@@ -649,12 +547,7 @@ namespace OpenSim.Data.MySQL
             }
             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();
             }
         }
 
@@ -690,10 +577,10 @@ 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.ID, user.FirstName, user.SurName, user.Email, user.PasswordHash, user.PasswordSalt,
                     user.HomeRegion, user.HomeRegionID, user.HomeLocation.X, user.HomeLocation.Y,
                     user.HomeLocation.Z, user.HomeLookAt.X,
                     user.HomeLookAt.Y, user.HomeLookAt.Z, user.Created, user.LastLogin,
@@ -701,14 +588,14 @@ namespace OpenSim.Data.MySQL
                     user.UserAssetURI, user.CanDoMask, user.WantDoMask, user.AboutText,
                     user.FirstLifeAboutText, user.Image, user.FirstLifeImage, user.WebLoginKey,
                     user.UserFlags, user.GodLevel, user.CustomType, user.Partner);
-            }
-            finally
-            {
-                dbm.Release();
-            }
 
                 return true;
             }
+            catch
+            {
+                return false;
+            }
+        }
 
         /// <summary>
         /// Performs a money transfer request between two accounts
@@ -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();
+                    dbcon.Open();
 
-                AvatarAppearance appearance = dbm.Manager.readAppearanceRow(reader);
+                    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);
 
-                reader.Dispose();
+                            if (appearance == null)
-                result.Dispose();
-
-                if (null == appearance)
                             {
                                 m_log.WarnFormat("[USER DB] No appearance found for user {0}", user.ToString());
                                 return null;
                             }
-                
+                            else
+                            {
                                 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())
+                        {
+                            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)
@@ -873,45 +743,29 @@ namespace OpenSim.Data.MySQL
             Dictionary<string, string> param = new Dictionary<string, string>();
             param["?uuid"] = userID.ToString();
 
-            MySQLSuperManager dbm = GetLockedConnection("ResetAttachments");
+            m_database.ExecuteParameterizedSql(
-
-            try
-            {
-                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)
         {
             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 " +
                     "where currentRegion = ?regionID",
                     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

@@ -110,7 +110,8 @@ 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.Parameters.AddWithValue("?ParentFolderID", newParent);
@@ -118,10 +119,12 @@ namespace OpenSim.Data.MySQL
 
                 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.Parameters.AddWithValue("?uuid", principalID.ToString());
@@ -129,16 +132,24 @@ namespace OpenSim.Data.MySQL
 
                 return DoQuery(cmd);
             }
+        }
 
         public int GetAssetPermissions(UUID principalID, UUID assetID)
         {
-            MySqlCommand cmd = new MySqlCommand();
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                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());
                 
-            IDataReader reader = ExecuteReader(cmd);
+                    using (IDataReader reader = cmd.ExecuteReader())
+                    {
 
                         int perms = 0;
                     
@@ -147,10 +158,10 @@ namespace OpenSim.Data.MySQL
                             perms = Convert.ToInt32(reader["inventoryCurrentPermissions"]);
                         }
 
-            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
 {
@@ -65,10 +66,14 @@ 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");
 
+            using (MySqlConnection dbcon = new MySqlConnection(connect))
+            {
+                dbcon.Open();
+                Migration m = new Migration(dbcon, assem, "AssetStore");
                 m.Update();
             }
+        }
 
         [TestFixtureTearDown]
         public void Cleanup()