ORA-600, [kqdobu], [U]
(Doc ID 787611.1)
Last updated on FEBRUARY 26, 2019
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.3 to 10.2.0.5.0 [Release 10.2]
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.
***Checked for relevance on 06-Jan-2014***
While issuing a grant statement, an ORA-600 error was generated.
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: , [kqdobu], [U], , ,[<OBJECT NAME>], , 
The trace file shows the failing statement:
GRANT ALL ON "<OBJECT NAME>" TO APPS WITH GRANT OPTION
Please note that the object name is unique to this case, and yours may be different (ORA-00600: , [kqdobu], [U], , [xx],[<object name>], , ) .
The function stack may look like the following:
The main functions of concern are: kqdobu <- kqrcmt which mean that we are trying to update internal tables.
Looking through the trace file for the object name, you may notice other cursors that indicate that the object was dropped.
Checking the recycle bin, we can confirm that the object was dropped and the time of the drop (in this case <OBJECT NAME>)
WHERE ORIGINAL_NAME = '<OBJECT NAME>';
ORIGINAL_NAME OPERATION TYPE DROPTIME
------------- ---------- ------ ----------
<OBJECT NAME> DROP TABLE 2009-03-03:09:22:24
If you match up the timestamp of the DROP, it will be the same as the timestamp on the failed GRANT statement.
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