CDC Apply Latency / High CPU from Apply Servers / High Version Count Re Inserts into CDC tables
Last updated on MAY 15, 2017
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.4 to 22.214.171.124 [Release 10.2 to 11.1]
Information in this document applies to any platform.
***Checked for relevance on 19-March-2013***
Change Data Capture.
Latency in the Apply process associated with CDC server activity.
High version count associated with insert statements into CDC tables .
Higher than usual CPU from Apply servers performing inserts into CDC tables.
sql_text like 'INSERT INTO%OPERATION$, CSCN$, COMMIT_TIMESTAMP$%' and
sum(version_count) > 10;
Shows high version counts relating to insert statements into CDC tables.
correct for your environment. The above attempts to isolate all inserts into CDC tables.
This issue has also been linked to ora-1722 errors and CDC operation.
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