RMAN-03002, RMAN-06059, ORA-19625 and ORA-27037 When Running RMAN Backup of Archivelogs

RMAN备份数据库时，出现下面错误错误信息：

Starting backup at 25-MAY-15

current log archived

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=953 devtype=DISK

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of backup plus archivelog command at 05/25/2015 02:00:03

RMAN-06059: expected archived log not found, lost of archived log compromises recoverability

ORA-19625: error identifying file /u04/backup/archive/arch_1_40337_867612567.dbf

ORA-27037: unable to obtain file status

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

验证发现/u04/backup/archive/arch_1_40337_867612567.dbf归档日志文件不存在，由于这台新的服务器，刚刚使用RMAN冷备份还原过来的。旧归档日志并没有复制过来。RMAN备份采用Nocatalog方式，也就是用control file作为catalog，控制文件里面还有这些归档日志文件信息，RMAN备份时会去备份这些归档日志，而这些旧的归档日志又不存在了，所以就会出现这个错误。可以通过下面命令解决：

1： RMAN> crosscheck archivelog all; --检查控制文件和实际物理文件的差别。如果一些归档日志已经删除或丢失，那么设置它们为expired

2： RMAN> delete expired archivelog all; --同步控制文件的信息和实际物理文件的信息(it will delete expired archivelog and updates your controlfile)

手工删除归档日志或移动了归档日志也会出现这个错误，需要手工执行crosscheck过程后，RMAN备份才能正常进行。