Avoiding and Resolving Database Performance Related Issues After Upgrade
(Doc ID 1528847.1)
Last updated on MARCH 12, 2021
Oracle Database Exadata Cloud Machine - Version N/A and later Oracle Cloud Infrastructure - Database Service - Version N/A and later Oracle Database Cloud Exadata Service - Version N/A and later Oracle Database Cloud Schema Service - Version N/A and later Oracle Database Exadata Express Cloud Service - Version N/A 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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