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How to Lower the HWM for SYSTEM.DEF$_ORIGIN in Multimaster Replication Without Quiescing Replication Groups (Doc ID 738353.1)

Last updated on NOVEMBER 06, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.1.0.6 [Release 9.2 to 11.1]
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 Backup Service - Version N/A and later
Information in this document applies to any platform.

Goal

The intent of this document is to give instructions concerning how to lower the Highwater Mark (HWM) of the SYSTEM - owned table DEF$_ORIGIN without having to quiesce any Advanced Replication groups defined on the database.  The SYSTEM.DEF$_ORIGIN table stores information concerning what transactions have been applied at the local site.  At times this table can become quite large, with a resulting large HWM.  Performance can be greatly improved by lowering the HWM.

Solution

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In this Document
Goal
Solution

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