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Wrong Result From Query Running in Parallel in 11.2.0.3 with Star_transformation_enabled=true (Doc ID 1581465.1)

Last updated on FEBRUARY 26, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 11.2.0.4 [Release 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
> Query runs in parallel
> Query uses Hash join
> star_transformation_enabled=true or
> optimizer_features_enable='11.2.0.3.1'

Symptoms

Select query using more than 1 IN(EXISTS) sub-query gives wrong result when running in parallel mode with below setups. 

Example of such a select is:

 

 

Changes

> Query runs in parallel 
> Query uses Hash join 
> star_transformation_enabled=true or 
> optimizer_features_enable='11.2.0.3.1'

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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