Import Using DataPump (IMPDP) Is Very Slow In RAC Database (Doc ID 1435180.1)

Last updated on DECEMBER 18, 2014

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 18-Dec-2014***

Symptoms

 The import process takes more time and the process waits in every instance before it completes. 

Changes

This issue is observed after aq_tm_processes has been set to 0. The trace file shows:

WAIT #41614637941648: name: 'streams: RAC waiting for inter instance ack'
{ select name from v$active_services where lower(name) = lower(:1)

KSXPLOOKUP: kjxgnqry failed KSXP 7.1.0QMNC 10 7

Cause

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