Avoiding and Resolving Database Performance Related Issues After Upgrade
(Doc ID 1528847.1)
Last updated on SEPTEMBER 25, 2018
Enterprise Manager for Oracle Database - Version 18.104.22.168 and later Oracle Database - Personal Edition - Version 22.214.171.124 and later Oracle Database - Standard Edition - Version 126.96.36.199 and later Oracle Database - Enterprise Edition - Version 188.8.131.52 and later Information in this document applies to any platform.
In the vast majority of cases, an upgrade of the Oracle database will perform well 'out of the box' with little user intervention. In the unlikely event of problems, this Document provides information on how to troubleshoot issues relating to performance after an upgrade has occurred.
Pro-Active Problem Avoidance and Diagnostic Collection
Although some problems may be unforeseen, in many cases problems may be avoidable if signs are detected early enough. For information on suggested preparations for upgrades in order to avoid issues and in case diagnostics are required, see the upgrade sections in:
<Document 1482811.1> Best Practices: Proactively Avoiding Database and Query Performance Issues <Document 1477599.1> Best Practices Around Data Collection For Performance Issues
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