日志信息如下：
RMAN-00571: ===========================================================
RMAN-00569: ===============
ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 02/15/2011 15:57:56
RMAN-06059: expected archived log not found, lost of archived log compromises recoverability
ORA-19625: error identifying file /u01/app/oracle/archive/2_3494_656067797.dbf
ORA-27037: unable to obtain file status IBM AIX RISC System/6000 Error: 2: A file or directory in the path name does not exist. Additional information:
运行如下命令： RMAN> change archivelog all crosscheck; 解决。
