My Oracle Support Banner

DBMS_IREFSTATS.RUN_SA Procedure Consume High CPU after 12.2.0.1 Upgrade (Doc ID 2424433.1)

Last updated on SEPTEMBER 14, 2023

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

After Upgrade the Oracle database from version 12.1.0.2 to 12.2.0.1 below queries consuming high CPU. These query mostly visible during the mview refresh.

TOP SQL reported:


Even after disabling all oracle advisory tasks, these queries are still listed in TOP high CPU consuming section of AWR report.

Changes

Upgrade the Oracle database from version 12.1.0.2 to 12.2.0.1 .

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.