Question

I have written a stored procedure which retrieves more than 7000 rows. While executing the stored procedure in my VB.NET winforms application, I’m getting an error like as follows.

Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

I googled and tried like using these lines of codes which wasn’t useful.

    sqlCmd.CommandTimeout = 0
    sqlCmd = New SqlCommand("waitfor delay '00:00:60'")

Please help me with this.

Answer 1

There are multiple places you can be experiencing a timeout. Some things to try.

1. Run the stored procedure with the exact same parameters in Sql Management Studio. How many seconds does it take? This will give you an idea of how long you need your timeout to be. If it takes more than 30-60 seconds, consider revising your sql, added indexes and otherwise tune your database.
2. CommandTimeout – This is the timeout for your particular command. You should avoid setting it to 0, although this may work, http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlcommand.commandtimeout.aspx
3. ConnectionTimeout – This is the timeout property for your entire connection. If this is less then your CommandTimeout it will override. Again, 0 should be avoided here. http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.connectiontimeout.aspx