Error ORA-12839 While Executing a Package in 11g Release
(Doc ID 1241725.1)
Last updated on FEBRUARY 19, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.1 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
It cannot run successfully a package in 126.96.36.199 release once enabled Parallel Session, on the contrary, this works fine in 10g release.
It happens if having a parent table and child table with a parent referential constraint then running Parallel DML again, then this can fail with an unexpected ORA-12839 or even fail with an ORA-600 error.
once enabled parallel session, i.e.:
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