My experience with the WITH RECOMPILE optionĪ while back, I was supporting a search page that allowed
Then SQL Server compiles it and places it in the cache. In the cache first, finds the sproc there, andĭoesn’t compile it. Plan and stores it in its procedure cache. By default, it doesn’t compile the sproc at creation time. The system tables: sysobjects, sysdepends,Īnd syscomments (the latter stores the body of the sproc). If itĭoesn’t find any errors, then it adds the sproc to They run more quickly than the equivalent SQL statements executed from QueryĪnalyzer (or perhaps passed in from some front-end app such as a Web page or VBįirst, you need to know what SQL Server does with a new sproc. The generally accepted wisdom about stored procedures (or sprocs) is that because SQL can optimize and compile them,
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TechRepublic’s free SQL Server newsletter, delivered each Tuesday, contains hands-on tips that will help you become more adept with this powerful relational database management system. See how Arthur Fuller executes a stored procedure using the WITH RECOMPILE option, and then consider whether you need to revisit any stored procedures in your database. SQL Server's ability to optimize and compile a stored procedure is great but, if you aren't careful, it can bite you when you least expect it. The risk of using OPTION (RECOMPILE) is low when closely monitored and is even the only solution in some contexts.Understanding SQL Server’s WITH RECOMPILE option But they exist for a reason, when they are the right tool for the right job. Long story short, query hints have a notoriety of being risky because there's a history on people using them incorrectly. I've even found it helpful in a performance bind when there isn't time to solve the root issue so it bought breathing room in the interim. Because generally it's a low-risk test, and can be easily removed should it hurt performance worse than it helps. Furthermore you should ask your DBA what his thoughts are on solving this problem without testing OPTION (RECOMPILE).
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If you had a case where the only solution was OPTION (RECOMPILE), I'd be curious on what your DBA's response would be on how to solve the problem. We can't say if your SSIS query is an example of this without a lot more details, but just a general thought I wanted to throw out there for your DBA, because just like Siths, it's bad to deal in absolutes. That being said, conversely sometimes there are situations where there is no other fix other than a query hint like OPTION (RECOMPILE) and it is the solution to a performance problem. It's just not usually the only or best solution and can make your performance problems worse when incorrectly used, especially on high frequency queries. Why is the query in ETL via SSIS slow but via a local stored procedure it is fast?Īs the experts mentioned, there are certainly valid use cases for the OPTION (RECOMPILE) query hint in production code. SQL Server - Can I surgically remove a bad cached query plan or am I chasing the wrong idea? Specifically the isolation level is set to serializable within the hibernate layer which I have learned is not optimal for high volume production environments.
The same query and parameter run via a local stored procedures executes in less than a second.These queries take minutes to complete and cause heavy impact. ETL Queries that cause clustered index scans when run through the ssis agent.These queries are executed (to the best of my knowledge) sequentially and at scheduled intervals. I have a DBA who, so far, is not a fan of the idea of OPTION (RECOMPILE) within the meat of Report ETL ssis agent queries. This option seems to get a lot of bad press. Is OPTION (RECOMPILE) used in production?
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