Troubleshooting: Avoiding and Resolving Application Performance Related Issues After Upgrade
(Doc ID 1962424.1)
Last updated on OCTOBER 30, 2019
Applies to:Enterprise Manager for Oracle Database - Version 126.96.36.199 and later
Oracle Database - Standard Edition - Version 188.8.131.52 and later
Oracle Database - Enterprise Edition - Version 184.108.40.206 and later
Oracle Database - Personal Edition - Version 220.127.116.11 and later
Oracle Database Cloud Schema 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 application 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 1477599.1> Best Practices Around Data Collection For Performance Issues
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In this Document
|Pro-Active Problem Avoidance and Diagnostic Collection|