ORA-600, ORA-600[ktuclu:badlatch2], ORA-7445[kggchk] Errors Crash The Database Instance
(Doc ID 1267731.1)
Last updated on FEBRUARY 07, 2014
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 9.2 to 11.2]
Information in this document applies to any platform.
ORA-00600: internal error code, arguments: 
ORA-00600: internal error code, arguments: [ktuclu:badlatch2]
ORA-7445: exception encountered: core dump [kggchk]
The call stack for the ora-600 error can look like this:
ksmdfr ktu_remove_arsp ktumof ktmmon
The following message may be seen in the trace file which indicates that an orphaned undo segment has been identified:
Found orphan usn
These errors can result in instance termination.
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