EXPDP is Slow While Updating Master Table after Upgrade to 18.104.22.168
(Doc ID 2326998.1)
Last updated on MAY 20, 2021
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 12.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.
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In 188.8.131.52, after applying <Patch 21554480> (a merge of multiple Data Pump performance fixes), Data Pump Export (expdp) completes in, say, 13 minutes. However, after upgrading to 184.108.40.206, the same expdp takes >2 hours to complete.
(Note: All fixes in <Patch 21554480> are included in 12.2.)
An Automatic Workload Repository (AWR) report shows:
These show that a lot of time was spent updating the master table.
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