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Wrong Results From Query Using Parallel Execution And Global Temporary Table(s) (Doc ID 457040.1)

Last updated on MARCH 12, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.4 [Release 10.2]
Oracle Database Cloud Schema 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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

When executing a parallel query on a set of tables including one or more Global Temporary Tables (GTT) resulting in an execution plan that involves Nested Loop Joins against the GTTs, NULL values result in the column which are part of the GTTs.

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Reproducing the issue is fairly simple:

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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