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Things to Consider to Avoid Database Performance Problems on 19c (Doc ID 2773012.1)

Last updated on MARCH 02, 2024

Applies to:

Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database - Enterprise Edition - Version to [Release 19]
Information in this document applies to any platform.


The purpose of this document is to publish some recommended fixes in hopes of avoiding database performance related problems in 19c. This also includes some ORA-600/ORA-7445 and other errors impacting performance.

For SQL Performance, refer the below document:

<Document 2773715.1> Things to Consider to Avoid SQL Performance Problems on 19c


This document contains the list of some known bugs impacting database performance. Some of bug fixes are included in a DBRU but some are not yet.

REMEMBER: Database Release Updates (RU) are cumulative in nature. For example, the Apr 2021 Release Update patch includes the contents of all previous Release Updates. Hence, it is always RECOMMENDED to be in the latest DBRU (Database Release Update) that contains most of the known bug fixes.

<Patch 33515361> - Database Jan 2022 Release Update (19.14) - Latest

Refer to the below document for the latest DBRU information.

<Document 2521164.1> Oracle Database 19c Proactive Patch Information

For bugs that are not included to RU yet, please download and install one-off patches for your database version and OS. If you do not find a patch for your specific version and OS from MOS, please open a Service Request with details on the patch needed. Please include a list of patches already applied (opatch lsinventory -detail) as well as any other patches you intend to apply.

For self-guided upgrade and best practices:-

<Document 1919.2> 19c Database Self-Guided Upgrade with Best Practices
<Document 555.1> Oracle Database 19c Important Recommended One-off Patches


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