当手工删除了归档日志以后，Rman备份会检测到日志缺失，从而无法进一步继续执行。
所以此时需要手工执行crosscheck过程，之后Rman备份可以恢复正常。
1.Crosscheck日志
$ rman target /
Recovery Manager: Release 9.2.0.4.0 64bit Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: AVATAR2 (DBID=2480694409)
RMAN> crosscheck archivelog all;
using target database controlfile instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=25 devtype=DISK
validation failed for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2714.dbf recid=2702 stamp=545107659
validation failed for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2715.dbf recid=2703 stamp=545108268
...........
validation failed for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2985.dbf recid=2973 stamp=545399327
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2986.dbf recid=2974 stamp=545400820
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2987.dbf recid=2975 stamp=545401757
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2988.dbf recid=2976 stamp=545402716
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2989.dbf recid=2977 stamp=545403661
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2990.dbf recid=2978 stamp=545404946
validation succeeded for archived log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2991.dbf recid=2979 stamp=545406220
Crosschecked 278 objects
RMAN>
2.使用delete expired archivelog all 命令删除所有过期归档日志：
RMAN> delete expired archivelog all;
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=12 devtype=DISK
List of Archived Log Copies
Key Thrd Seq S Low Time Name
376 1 2714 X 23NOV04 =/opt/oracle/oradata/avatar2/archive/1_2714.dbf
.....
3.简要介绍一下report obsolete命令
使用report obsolete命令报告过期备份
RMAN> report obsolete;
RMAN retention policy will be applied to the command
RMAN retention policy is set to redundancy 1
Report of obsolete backups and copies
Type Key Completion Time Filename/Handle
Backup Set 125 01NOV04
Backup Piece 125 01NOV04 /data1/oracle/orabak/full_1_541045804
Backup Set 131 04NOV04
Backup Piece 131 04NOV04 /data1/oracle/orabak/full_AVATAR2_20041104_131
....
Backup Set 173 06DEC04
Backup Piece 173 06DEC04 /data1/oracle/orabak/full_AVATAR2_20041206_173
Backup Set 179 11DEC04
Backup Piece 179 11DEC04 /data1/oracle/orabak/arch544588206.arc
.....
Backup Piece 189 17DEC04 /data1/oracle/orabak/arch545106606.arc
Backup Set 190 17DEC04
Backup Piece 190 17DEC04 /data1/oracle/orabak/arch545106665.arc
Backup Set 191 20DEC04
Backup Piece 191 20DEC04 /data1/oracle/orabak/arch_AVATAR2_20041220_194
Archive Log 2973 20DEC04 /opt/oracle/oradata/avatar2/archive/1_2985.dbf
Archive Log 2971 20DEC04 /opt/oracle/oradata/avatar2/archive/1_2984.dbf
.....
Archive Log 2705 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2717.dbf
Archive Log 2704 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2716.dbf
Archive Log 2703 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2715.dbf
Archive Log 2702 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2714.dbf
4.使用delete obsolete命令删除过期备份：
RMAN> delete obsolete;
RMAN retention policy will be applied to the command
RMAN retention policy is set to redundancy 1
using channel ORA_DISK_1
Deleting the following obsolete backups and copies:
Type Key Completion Time Filename/Handle
Backup Set 125 01NOV04
Backup Piece 125 01NOV04 /data1/oracle/orabak/full_1_541045804
....
Archive Log 2704 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2716.dbf
Archive Log 2703 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2715.dbf
Archive Log 2702 17DEC04 /opt/oracle/oradata/avatar2/archive/1_2714.dbf
Do you really want to delete the above objects (enter YES or NO)? yes
deleted backup piece
backup piece handle=/data1/oracle/orabak/full_AVATAR2_20041206_173 recid=173 stamp=544156241
.....
deleted archive log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2715.dbf recid=2703 stamp=545108268
deleted archive log
archive log filename=/opt/oracle/oradata/avatar2/archive/1_2714.dbf recid=2702 stamp=545107659
Deleted 286 objects
RMAN> crosscheck archivelog all;
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=19 devtype=DISK
specification does not match any archive log in the recovery catalog
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