Statistic Calculation Was FORCED SERIAL Due to PIN_VIRTUAL_COLUMNS (Doc ID 1918284.1)

Last updated on SEPTEMBER 15, 2017

Applies to:

Oracle Communications Billing and Revenue Management - Version 7.5.0.0.0 to 7.5.0.0.0 [Release 7.5.0]
Information in this document applies to any platform.
Checked for relevance on 11-Mar-2016.
Checked for relevance on 15-Sep-2017.

Symptoms

On : BRM 7.5.0.7.0 version, Event Management

Standard Oracle statistics calculation by DBMS_STATS was very slow due to FORCED SERIAL in PIN_VIRTUAL_COLUMNS package which has been created without PARALLEL_ENABLE clause.

The execution plan for statistics calculation looked like this:


Expectation:
=========
In order to prevent FORCED SERIAL, it was required to add PARALLEL_ENABLE in order to make statistic calculation works in parallel.

Changes

 

Cause

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