Enabling Heartbeat Table Causes CPU Spike On The Target Database

(Doc ID 2400505.1)

Last updated on MAY 21, 2018

Applies to:

Oracle GoldenGate - Version 12.2.0.1.0 and later
Information in this document applies to any platform.

Symptoms

After enabling Heartbeat table at the target:

1) The heartbeat table gets Row Exclusive lock. 

2) AWR report shows more "enq:TM - contention".

3) TOP SQL shows more elapsed time for heartbeat table update .

Changes

 

Cause

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