Slow Data Pump with REMAP_SCHEMA and REMAP_TABLESPACE parameters
(Doc ID 429846.1)
Last updated on MARCH 11, 2019
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.3 [Release 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
When importing data with DataPump and remapping the schema and/or the tablespace, the final stage of the import takes quite a dramatic time to complete, even more than the actual data import.
The DataPump import utility shows as last line in many situation:
If you check the DataPump worker process errorstack using pstack or using oradebug in the following sequence:
sqlplus "/ as sysdba"
oradebug setospid <ospid from ps>
oradebug dump errorstack 10
The following stack will result every time the stack is dumped:
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