Windows Service SQL timeout exception - asp.net

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.CommandAccessor1.<Execute>d__0.MoveNext()
at System.Collections.Generic.List1..ctor(IEnumerable1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable1 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;