SELECT with pipelined function is not executed as parallel

(Doc ID 2168864.1)

Last updated on AUGUST 21, 2016

Applies to:

Oracle Database - Standard Edition - Version 11.2.0.1 and later
Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

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

We can see this behavior with the following testcase.

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms