Slow Performance of DataPump Export during Estimate Phase

(Doc ID 1354535.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 27-Oct-2015***


You started an Export DataPump job in a large database and observed a performance problem where the export job was apparently hanging for a long time at the step:

Estimate in progress using BLOCKS (or STATISTICS) method...

This problem is handled in several internal defects, which have different root causes.



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