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Parallel Query returns Wrong results (multiple rows returned for each expected row) (Doc ID 2345291.1)

Last updated on AUGUST 18, 2022

Applies to:

Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Schema Service - Version N/A 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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In this Document
Symptoms
Changes
Cause
Solution
References


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