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 Originally Posted by philthee
Well, having just come back from holiday i decided to try out something.
In our test system i set optimizer_features_enable=9.2.0 and for the one query that i have been given it is now flying in at 20 minutes rather than 20 hours.
Are you aware you are turning off Ora10g optimizer features?
Why don't hint the offending query to follow the proven execution plan and let the system to the default optimizer setting.
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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