How to Lower the HWM for SYSTEM.DEF$_ORIGIN in Multimaster Replication Without Quiescing Replication Groups
Last updated on SEPTEMBER 05, 2015
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 9.2 to 11.1]
Information in this document applies to any platform.
The intent of this document is to give instructions concerning how to lower the Highwater Mark (HWM) of the SYSTEM - owned table DEF$_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.
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