Subquery Factoring Clause has Poor Execution Plan After Upgrade to 12c Resulting in ORA-1652
(Doc ID 2362912.1)
Last updated on FEBRUARY 22, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
- Query after upgrade to 18.104.22.168, errors with ORA-1652 with bad execution plan
- Query was tested with changing optimizer_feature_enabled parameter back to 11g, but query still fails
- Disabling adaptive features also fails
- Deleting statistics on the tables resolves the issue
Upgrade to 22.214.171.124.
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