E-ORA: Descending Index Performance Issues in Oracle Databases

(Doc ID 662220.1)

Last updated on JULY 25, 2017

Applies to:

PeopleSoft Enterprise PT PeopleTools - Version 8.4 and later
Information in this document applies to any platform.
***Checked for relevance on 05-MAY-2014***

Symptoms

Descending indexes were introduced to improve performance in cases where the result set needed to be sorted in descending order.  This avoids an additional resort from ascending and was shown to be an effective method to decrease total execution times.

 

 

Changes

PeopleTools upgrades from pre-8.48 to 8.48 or later can trigger performance changes in queries using descending indexes.

Cause

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