I've ran into a Timeout issue while executing a stored procedure for a SSRS Report I've created in Business Intelligence Development studio (BIDS). My stored procedure is pretty large and on average takes nearly 4 minutes to execute in SQL Server Management Studio. So i've accomidated for this by increasing the "Time out (in seconds)" to 600 seconds (10 mins). I've also increased the query timeout in the Tools->Options->Business Intelligence Designers-->Query Timeout AND Connection Timeout to 600 seconds as well.
Lastly, I've since created two other reports that use stored procedures with no problems. (they are a lot smaller and take roughly 30 seconds to execute). For my dataset properties, I always use Query type: "Text", and call the stored procedure with the EXEC command.
Any ideas as to why my stored procedure of interest is still timing out?
Below is the error message I receive after clicking "Refresh Fields":
"Could not create a list of fields for the query. Verify that you can connect to the data source and that your query syntax is correct."
Details
"Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. The statement has been terminated."
Thank You for your time.