Parallel Query returns Wrong results (multiple rows returned for each expected row)

(Doc ID 2345291.1)

Last updated on MARCH 15, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 and later
Information in this document applies to any platform.

Symptoms

On : 11.2.0.3 version, RDBMS

A parallel query returned wrong results (multiple rows returned for each expected row).
The wrong-results plan showed both a serial and parallel branch under the CONCATENATION operation.

Changes

 The below parameter didn't effect on the wrong results.

*._nlj_batching_enabled = 0

Cause

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