RE: Different Plans for Literal Vs Bind Variables

From: Allen, Brandon <>
Date: Fri, 9 Jan 2009 15:47:46 -0700
Message-ID: <64BAF54438380142A0BF94A23224A31E10A33B712C_at_ONEWS06.oneneck.corp>

What's the DB version? If it's 9i+, are you using bind variable peeking? If so, then the plan with the literal should be the same as the plan with the bind variable unless the bind statement is already cached with a plan optimized based on a significantly different bind value. If you're not using bind variable peeking, the usual solution is to provide a hint or stored outline. If you can't do a hint since it's coming from PeopleSoft, then the outline is the way to go, or if you're in 10g and have the tuning pack, can use a SQL Profile, but if you're in 10g, then you should probably be using bind variable peeking.


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Received on Fri Jan 09 2009 - 16:47:46 CST

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