SQL Performance (MOSC)

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Optimizer_features_enable

edited Feb 9, 2016 9:31AM in SQL Performance (MOSC) 4 commentsAnswered

Hi,

We recently migrated a database from 10.2.0.4 RAC to 11.2.0.4 RAC. After migration, we saw major performance issues. We were able to resolve the issue after changing optimizer_features_enable to 10.2.0.4 instead of 11.2.0.4. I understand that by changing this parameter database will not be able to use new optimizer features. Does it have any ill effect if we leave the parameter to 10.2.0.4 for a long time?

Thanks

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