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Executing a query fails with ORA-00600 [qesaAdaptFch.4] Errors after upgrading the database to 12c (Doc ID 2215912.1)

Last updated on FEBRUARY 15, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.


1. The alert log and the trace file report with the following errors:

ORA-00600: internal error code, arguments: [qesaAdaptFch.4], [0], [], [], [], [], [], [], [], [], [], []
Incident details in: <diagnostic_dest>/diag/rdbms/<instname>/incident/incdir_81744/<instname>_i81744.trc

2. The failing statement is a SELECT that meets these conditions:

- default column value
- hash join
- parallel aggregation

3. The failing functions and the call stack is similar to:

.... qesaAdaptiveFetchRo qergsRowP .... 


 The Database has been upgraded to 12c from 10g or 11g.


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