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Increase In CPU Usage After Upgrade To 12C (Doc ID 2397287.1)

Last updated on AUGUST 02, 2024

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
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
Linux on IBM Z

Symptoms

 When the database was upgraded to 12.1.0.2, the performance degraded causing a CPU cost.  Some database background processes are consuming more CPU than before.

These are factors that needs to be checked that affects the CPU performance in this particular case.

Changes

 This occurs when the database was upgraded from 11.2.0.4 to 12.1.0.2.

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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