Question

I have a web-service that calls a stored procedure from a MS-SQL2005 DB. My Web-Service was timing out on a call to one of the stored procedures I have (this has been in production for a couple of months with no timeouts), so I tried running the query in Query Analyzer which also timed out. I decided to drop and recreate the stored procedure with no changes to the code and it started performing again..

Questions:

Would this typically be an error in the TSQL of my Stored Procedure?

-Or-

Has anyone seen this and found that it is caused by some problem with the compilation of the Stored Procedure?

Also, of course, any other insights on this are welcome as well.

Similar:

• SQL poor stored procedure execution plan performance – parameter sniffing
• Parameter Sniffing (or Spoofing) in SQL Server

Answer 1

Have you been updating your statistics on the database? This sounds like the original SP was using an out-of-date query plan. sp_recompile might have helped rather than dropping/recreating it.