If you want performance improvements then you should not be using managed code from an unmanaged application. Use the best guess

This StackOverflow answer[^] might help. You need a combination of sp_spaceused for the data[^] and some low-level access for the transaction log[^]. "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

Thanks all for your replies! I'm realized that it was not adequate question. I'm going to use one of these methods (just like in ADO.NET :)) Server.ConnectionContext.ExecuteReader Server.ConnectionContext.ExecuteWithResults Sorry for taking your time.