DataPump Import with REMAP_SCHEMA is Very Slow (Doc ID 812864.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Information in this document applies to any platform.
***Checked for relevance on 15-Mar-2013***


Symptoms

You started a DataPump schema import with parameter REMAP_SCHEMA. This apparently hangs indefinitely on "TABLE/STATISTICS/TABLE_STATISTICS". You verified, the patch for <Bug 5071931> is installed but the import is still slow. If you exclude the statistics (EXCLUDE=STATISTICS) or do not use REMAP_SCHEMA, then import is very fast.

Cause

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