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Troubleshooting: Avoiding and Resolving Application Performance Related Issues After Upgrade (Doc ID 1962424.1)

Last updated on AUGUST 30, 2023

Applies to:

Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.

Purpose

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 1482811.1> Best Practices: Proactively Avoiding Database and Query Performance Issues
<Document 1477599.1> Best Practices Around Data Collection For Performance Issues

Troubleshooting Steps

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In this Document
Purpose
 Pro-Active Problem Avoidance and Diagnostic Collection
Troubleshooting Steps
 Application Issues
 Problem Diagnosis
References

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