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Ora-00600 [kccsbck_first] Error Occuring On Alter Database Mount Exclusive Command (Doc ID 291684.1)

Last updated on JULY 25, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.0.1 to 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.
***Checked for relevance on 09-APR-2012***
***Checked for relevance on 19-Nov-2014***


Alter database mount exclusive results in:

ORA-00600: internal error code, arguments: [kccsbck_first], [1], [2141358753], [], [], [], [], []

The description of the error is:

'We receive this error because we are attempting to be the first
thread/instance to mount the database and cannot because it appears that
at least one other thread has mounted the database already'.

However in this case the database was a standalone database on Windows.
It had only one oracle service running.

The operating system was rebooted, the oracle service was deleted and a new service created.
Even then the error persisted.


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