Windows Service SQL timeout exception

Question

I have a Windows service which continuously each 10 seconds queries the SQL Server database table, and I also have a web site which also queries the same database table after 25 seconds.

After some time I get exception - server timeout exception has occurred . I went through stack-overflow site and has done the changes to SQL configuration settings but still I got the same exception. What to do?

Stack Trace

at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)
at Microsoft.Practices.EnterpriseLibrary.Data.Database.DoExecuteReader(DbCommand command, CommandBehavior cmdBehavior) at Microsoft.Practices.EnterpriseLibrary.Data.Database.ExecuteReader(DbCommand command) at Microsoft.Practices.EnterpriseLibrary.Data.CommandAccessor 1.<Execute>d__0.MoveNext() at System.Collections.Generic.List 1..ctor(IEnumerable 1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable 1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable 1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable 1 source) at System.Runtime.Remoting.Messaging.Message.Dispatch(Object target, Boolean fExecuteInContext) at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext)

Answer 1

Show me the code! timeout exception usually are because you don't close the database connection.

try add the code in the final of algorithm

if (connection.State == System.Data.ConnectionState.Open)
    {
        connection.Close();
        connection.Dispose();
    }

If you use to EnterpriseLibrary, try add more time to commandTimeOut

DbCommand dbcommand = database.GetStoredProcCommand("usp_TheStoredProcedureName");
dbcommand.CommandTimeout = 120;