RMAN backup encountered a ORA-600 Error

I have been normal backup last night encountered OR-600 error, the specific error is: RMAN-03002: failureofbackupcommandat1230201204: 00: 06

I have been normal backup last night encountered an OR-600 error, the specific error is: RMAN-03002: failure of backup command at 12/30/2012 04:00:06

It was normal that the backup encountered an OR-600 error last night. The specific error is:

RMAN-03002: failure of backup command at 12/30/2012 04:00:06

ORA-00600: internal error code, arguments: [525], [0x70000020661E7D8], [5], [library cache], [30], [0x700000000025BF0], [device information], []

ORA-27041: unable to open file

Ibm aix risc System/6000 Error: 25: Not a typewriter

Additional information: 16
It is estimated that it should have encountered a Bug, the use of ORA-600 Error Look-up Tool only to find the article [38888.1], but it does not help solve the problem. Use the RMAN ORA-600 525 keyword to find the relevant article [ID 262997.1]. IT is indeed a Bug that caused the error, and the Bug only exists in the IT life of the AIX system where RMAN backup encounters a ORA-600 error-Jet. It is also easy to solve the problem without patching. You only need to add the DISKRATIO parameter 0 to the backup.
The following is a detailed explanation of this Bug in this article [ID 262997.1 ]:
ORA-600 [525]/[510] and ORA-27041 When Running RMAN Backup On ibm aix Platform [ID 262997.1]

In this Document
Symptoms
Cause
Solution
References

Applies:
Oracle Server-Enterprise Edition-Version: 9
AIX5L Based Systems (64-bit)
AIX 4.3 Based Systems (64-bit)
Checked for relevance on 09-might-2007
Symptoms
When running RMAN backup script you receive an error stack similar:

RMAN> backup tablespace users;
RMAN-00571: ========================================================== ==============================
RMAN-00569: ==================== error message stack follows ==========================
RMAN-00571: ========================================================== ==============================
RMAN-03002: failure of backup command at 02/10/2004 14:26:27
ORA-00600: internal error code, arguments: [525], [0x70000008093B068], [5],
[Library cache], [1], [0x700000000025B30], [device information], []
ORA-27041: unable to open file
Ibm aix risc System/6000 Error: 25: Not a typewriter
Additional information: 16

In the trace file generated by the ORA-600, the current SQL statement is:

Select device, node from x $ krbaff where fno =: b1
Cause
This problem is specific to the AIX platform and is suspected to be related to the node affinity interface. No solution in terms of a code fix exists.
Solution
Workaround: Use the DISKRATIO = 0 option on the backup command, eg .:

RMAN> backup tablespace users diskratio = 0;
References
BUG: 2181764-ORA-00600 [KSFDDLI3] EXECUTING BACKUP COMMAND ON RMAN

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