Informatica ETL has gotten slow following upgrading

(Doc ID 2225346.1)

Last updated on MARCH 01, 2017

Applies to:

Informatica OEM PowerCenter ETL Server - Version 7.9.6.1 to 7.9.6.4 [Release V7]
Information in this document applies to any platform.

Symptoms

OBIEE 12c

Oracle Database EE Release 12.1.0.2.0

Informatica 9.6.1

Following Informatica upgrade, customer is running custom (not OBIA EP)  ETL with 100+ jobs fails on one job 90% of the time.  10% of the time it succeeds.
Database errors out with : ORA 12805 parallel query server died unexpectedly

Cause

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