My Oracle Support Banner

Poor Performance of Expdp Against a Particular Table (Doc ID 1613750.1)

Last updated on JANUARY 13, 2014

Applies to:

Oracle Database - Standard Edition - Version and later
Information in this document applies to any platform.


Expdp is running very slowly against a particular table. A 10046 trace of the expdp shows that the waits are for 'db file sequential read' against the table itself, reading one block at a time, even though the internally defined parameter 'db_file_multiblock_read_count' is set to 128.

Conventional export is also slow.

An explain plan of expdp shows a full table scan is being performed.

Trying different options for the ACCESS_METHOD parameter does not make any difference.


To view full details, sign in with your My Oracle Support account.

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

In this Document

This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical review.
My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.