RMAN備份遭遇ORA-600錯誤

RMAN備份遭遇ORA-600錯誤

本來一直都很正常的備份昨晚遭遇了OR-600的錯誤，具體錯誤為：

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
估計應該是碰到Bug了，使用ORA-600 Error Look-up Tool只找到文章[38888.1]，但對問題解決沒什麼大的協助。使用RMAN ORA-600 525關鍵字才找到相關的文章[ID 262997.1]。確實是Bug導致了該錯誤，而且該Bug只存在於AIX系統上RMAN備份遭遇ORA-600錯誤 - Jet - Jet的IT人生。還好在不打補丁的情況解決該問題也還算簡單，只要在備份中加上參數DISKRATIO=0即可解決。
以下是該文章[ID 262997.1]對該Bug的具體解釋
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 to:
 Oracle Server - Enterprise Edition - Version: 9
 AIX5L Based Systems (64-bit)
 AIX 4.3 Based Systems (64-bit)
 Checked for relevance on 09-May-2007
Symptoms
 When running RMAN backup script you receive an error stack similar to:

 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