asked on DB2 Explain Plan takes forever
DB2 10.5 on Windows Server 2012
I can have a query that takes 3 seconds to run and then when I look at the explain plan, it takes 2-5 minutes to generate. And it seems to be getting slower.
How can I speed this up? In my QA environment the same operation takes like 20 seconds to generate.
Jim
I can have a query that takes 3 seconds to run and then when I look at the explain plan, it takes 2-5 minutes to generate. And it seems to be getting slower.
How can I speed this up? In my QA environment the same operation takes like 20 seconds to generate.
Jim
Windows OSWindows Server 2012Quality AssuranceDB2
Last Comment
Kent Olsen
ASKER
On my QA and Stage servers it does, but on the busy prod server can take up to 5 minutes. I thought maybe some of the tables that explain uses needed to be cleared or something.
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That seems pretty weird, Jim. It sounds like a resource conflict (perhaps a lock?) is getting in the way. An explain plan should generate quite quickly.