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 10.2.0.1 to 11.2.0.3 [Release 10.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 27-Oct-2015***

Symptoms

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...
Processing object type DATABASE_EXPORT/SCHEMA/TABLE/TABLE_DATA

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

 

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms