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Data Pump import (IMPDP) is very slow when importing PROCOBJ (Doc ID 1535530.1)

Last updated on MARCH 29, 2019

Applies to:

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


When attempting to use Data Pump import (IMPDP) to perfom full database import, it is taking 20+ hours to complete.

The process appears to run as expected when importing data and indexes but seems to hang when executing the below step:


Monitoring the SQL I can see that the import is creating chain jobs and other scheduler jobs. Each chain job being created is taking 20+ minutes and as soon as this step begins I see contention related to cache pin.



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