Queries Do not Implement Assigned DOP and Take Much Longer After Upgrade from 188.8.131.52 to 184.108.40.206
(Doc ID 1365186.1)
Last updated on SEPTEMBER 06, 2021
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.2]
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
- Many queries take much longer after upgrading from 22.214.171.124 to 126.96.36.199
- Queries requires parallelism and partitioned/sub-partitioned tables.
- The parallel setting on the tables has not changed any between 188.8.131.52 and 184.108.40.206.
- With AUTO setting, for a query that was set to "noparallel", as parallel plan would be chosen.
Upgrade from 220.127.116.11 to 18.104.22.168
No changes made to any parameters including any parallel related parameter
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