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Procedure to Manually Coalesce All the IOTs / Indexes Associated with Advanced Queueing Tables to Maintain Enqueue / Dequeue Performance; Reduce QMON CPU Usage and Redo Generation (Doc ID 271855.1)

Last updated on AUGUST 31, 2021

Applies to:

Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version to [Release 9.0.1 to 12.1]
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
Information in this document applies to any platform.


The purpose of this note is to document a procedure to workaround the issues discussed in <Bug 2965138>,  unpublished Bug 2890421 'KGL CACHE IN QMON FOR PERFORMANCE' and <Bug 3405618> and which will maintain enqueue/dequeue performance in an Advanced Queueing database.


Database administrators of Advanced Queueing and Streams databases.


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In this Document
 Benefits of performing a coalesce on AQ IOTs and indexes

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