High CPU Utilization when performing a Conditional Dequeue (Doc ID 846473.1)

Last updated on MAY 05, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.5 [Release 10.2]
Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.1.0.7 [Release 11.1]
Information in this document applies to any platform.

Symptoms

Queries related to dequeue by condition and specifically in accessing the view (new in 10.2.) aq$_<queue_table>_f are significantly slower in 10.2 than they had been in 9.2.

A feature of the issue is :

- high CPU associated with acessing the view : aq$_<queue_table>_f , as well as

- a high number of buffer gets per execution.

Changes

Upgrade to 10.2

Cause

Sign In with your My Oracle Support account

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

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms