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Script to Prevent Excessive Spill of Message From the Streams Buffer Queue To Disk (Doc ID 259609.1)

Last updated on AUGUST 31, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 and later
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 Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Goal

To provide a script which would prevent excessive spill of messages from streams buffer queue to the Disk.

It works by stopping capture process when the number of outstanding messages are above a threshold and
then restarting capture when the messages come within the threshold 

Solution

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