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How to Reduce the Highwater Mark for Advanced Queueing Objects Using Truncate in Pre-10g Databases (Doc ID 284692.1)

Last updated on JULY 19, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.0 to 9.2.0.8 [Release 8.1.7 to 9.2]
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 Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Goal

To provide a script generator to generate the required scripts to reset the Highwater Mark (HWM) of all the non-SYS and SYSTEM queue tables in a database. 

In pre-9i databases this provides an alternative to the workaround discussed in <Note 271855.1> to reduce the CPU and resource usage of the queue monitor processes. 

Database Administrators can use this script when they need to reduce the space consumption of relating to AQ objects within a database, improve the enqueue/dequeue performance, and reduce the resource consumption of the Qmon process.

NOTE: In the images and/or the document content above, the user information and data used represents fictitious data from the Oracle sample schema(s) or
Public Documentation delivered with an Oracle database product.  Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

Solution

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In this Document
Goal
Solution
 Requirements
 Configuring
 Instructions
 Script
  
References

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