Slow Data Pump with REMAP_SCHEMA and REMAP_TABLESPACE parameters (Doc ID 429846.1)

Last updated on FEBRUARY 15, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.3 [Release 10.2]
Information in this document applies to any platform.
***Checked for relevance on 15-Feb-2016***

Symptoms

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:

Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS


If you check the Datapump worker process errorstack using pstack or using oradebug in the following sequence:

ps -ef | grep dw
sqlplus "/ as sysdba"
oradebug setospid <ospid from ps>
oradebug dump errorstack 10


The following stack will result everytime the stack is dumped:

LpxmListDeleteObject XdkDomFreeNode LpxsutFreeXMLNode lpxxpfreexobj lpxsSSPopVariableSet lpxsTPLResetParams lpxsCaTProcessAction LpxsutProcessChildren ...

Cause

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