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SELECT with pipelined function is not executed as parallel (Doc ID 2168864.1)

Last updated on FEBRUARY 20, 2019

Applies to:

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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product.  Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

SELECT with pipelined function is sometimes executed serially even if explain plan shows parallel plan.

We can see this behavior with the following testcase.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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