Applies to:
Oracle Server - Enterprise Edition - Version: 10.2.0.1 and later   [Release: 10.2 and later ]
Information in this document applies to any platform.
Symptoms

The database is getting the following errors on Startup:

ORA-00600: internal error code, arguments: [kccpb_sanity_check_2], [3621501], [3621462], [0x000000000]

Changes
In this case, the customer moved the box from one data center to another.

Cause
ORA-600 [kccpb_sanity_check_2] indicates that the seq# of the last read block is
higher than the seq# of the control file header block. This is indication of
the lost write of the header block during commit of the previous cf
transaction.


Solution
1) restore a backup of a controlfile and recover

OR

2) recreate the controlfile

OR

3) restore the database from last good backup and recover

NOTE:  If you do not have any special backup of control file to restore and you are using Multiple Control File 
copies in your pfile/init.ora/spfile you can attempt to mount the database using each control file one by one.  
If you are able to mount the database with any of these control file copies you can then issue 
'alter database backup controlfile to trace' to recreate controlfile.