现象：
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 09/01/2009 13:09:11
RMAN-06059: expected archived log not found, lost of archived log compromises recoverability
ORA-19625: error identifying file /u01/app/oracle/oradata/oralin/archivelog/ARC0000000856_0692453511.0001
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
方案：
RMAN> change archivelog all crosscheck ;
