My Oracle Support Banner

Intermittent Error ORA-00979: "Not A Group By Expression" When Running A SQL Query (Doc ID 1350177.1)

Last updated on JANUARY 07, 2025

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.5 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

A specific query works correctly for about 6 out of 10 times but returns in other cases the following error for the same SQL:

ORA-00979: not a GROUP BY expression

Changes

 

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.