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ORA-00600 [12240] in the Alert.log File (Doc ID 414208.1)

Last updated on FEBRUARY 03, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.1 to 11.1]
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.


1. The alert.log reports ORA-00600 [12240], [], [], [], [], [], [], []

2. The function opidcl is found among the stack trace in the trace file. This indicates that the sqlnet session was terminated.

3. The trace file will show something similar to:

        KFFMOP: hash link:[7000000a0f9b180,7000000a0f9b180] sobjlink:[7000000fbfaf3f0,7000000fbfaf3f0]
                map kggrp:[0x7000000f9fc5a78, 0, valid] map id:154
                group:[1,-1319381497] file:[370,599330873] extent:8650
                flags:0x0004 disk:6 au:33038 lock:0 proc:0x7000000fdc34e78


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