ORA-600(krbounotread_noctx)错误

由于RMAN备份导致的BUG。
ORA-600(krboReadBitmap_badbitmap)错误:https://yangtingkun.net/?p=863
这个问题和以前碰到的问题属于同一个BUG,错误信息为:

Tue May 8 02:18:42 2012
Backup optimization FOR file +DATA/orcl/datafile/index_ts1.ora stopped due TO errors:
Tue May 8 02:18:42 2012
Errors IN file /u01/app/oracle/admin/ORCL/udump/orcl2_ora_3758.trc:
ORA-00600: internal error code, arguments: [krboReadBitmap_badbitmap], [272945930], [+DATA/orcl/datafile/index_ts1.ora], [6], [30], [33554432], [1024], [19808273]
Tue May 8 02:18:42 2012
Trace dumping IS performing id=[cdmp_20120508021842]
Tue May 8 02:18:42 2012
Errors IN file /u01/app/oracle/admin/ORCL/udump/orcl2_ora_3758.trc:
ORA-00600: internal error code, arguments: [krbounotread_noctx], [], [], [], [], [], [], []

出现这个ORA-600[krbounotread_noctx]错误的同时,也出现了ORA-600[krboReadBitmap_badbitmap]错误,二个错误是同一个问题导致的,而且在出现错误之前,告警日志中有个Backup optimization的信息,说明问题发生时刻在进行备份,且启用了备份的优化。
因此,导致问题的原因也和前一篇文档中介绍的一样,参考MOS文档:ORA-600 [Krbodo_badend] On RMAN Backup [ID 412170.1],这个问题对应的BUG为:Bug 5556503,在进行备份时通过文件头的BITMAP信息在确定哪些空间需要备份时,出现了错误并导致了ORA-600错误。
针对这个错误,可以通过升级到10.2.0.4来解决该问题,也可以在备份的时候去掉备份优化选项,在BACKUP语句中添加BLOCKS ALL语句。

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