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Parallel Query Returns Wrong Results (Fewer Rows) When CONCATENATION In Plan (Doc ID 1352777.1)

Last updated on MARCH 27, 2014

Applies to:

Oracle Server - Enterprise Edition - Version: 11.2.0.2 and later   [Release: 11.2 and later ]
Information in this document applies to any platform.

Symptoms

A parallel query returned wrong results (fewer rows) after upgrading from 10.2.0.5 to 11.2.0.2.

The wrong-results plan showed both a serial and parallel branch under the CONCATENATION operation.

Turning off fix control for Bug 9732434 verified the match to this bug:

alter session set "_fix_control" = '9732434:OFF';
<run query>

Changes

Upgrade from 10.2.0.5 to 11.2.0.2.

Cause

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In this Document
  Symptoms
  Changes
  Cause
  Solution
  References

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.

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