Statistic Calculation Was FORCED SERIAL Due to PIN_VIRTUAL_COLUMNS
(Doc ID 1918284.1)
Last updated on AUGUST 11, 2020
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.
Symptoms
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:
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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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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |