用于rman备份的存储进行空间调整，重新创建了备份目录。在备份目录/crmbak被删除之前，没有先使用rman进行备份的清理，在重新创建并挂载该目录之后，导致控制文件中的rman信息失效，需要crosscheck。相当于在操作系统上直接把备份文件给删除了。但是在执行的时候却报错了，报的RMAN-06207错误。报错也正常，但是奇怪的是crosscheck只能针对一个备份片或者备份集。不能对多个。也没找到相关的资料或者说法。

$rman target / nocatalog
RMAN> crosscheck backup of archivelog all ;

using channel ORA_DISK_1

RMAN>

RMAN> report obsolete ;

RMAN retention policy will be applied to the command
RMAN retention policy is set to recovery window of 8 days
Report of obsolete backups and copies
Type                 Key    Completion Time    Filename/Handle
-------------------- ------ ------------------ --------------------
Backup Set           22     28-FEB-09         
  Backup Piece       71     28-FEB-09          

/crmbak/archivelog/RMAN_ARCH75680364012.arc
Backup Set           23     28-FEB-09         
  Backup Piece       72     28-FEB-09          

/crmbak/archivelog/RMAN_ARCH76680367633.arc
Backup Set           24     28-FEB-09         
  Backup Piece       73     28-FEB-09          

/crmbak/archivelog/RMAN_ARCH77680371224.arc
...

RMAN> delete noprompt obsolete ;

RMAN retention policy will be applied to the command
RMAN retention policy is set to recovery window of 8 days
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=2182 instance=ngcrm1 devtype=DISK
Deleting the following obsolete backups and copies:
Type                 Key    Completion Time    Filename/Handle
-------------------- ------ ------------------ --------------------
RMAN-06207: WARNING: 173 objects could not be deleted for DISK channel(s) due
RMAN-06208:          to mismatched status.  Use CROSSCHECK command to fix status
RMAN-06210: List of Mismatched objects
RMAN-06211: ==========================
RMAN-06212:   Object Type   Filename/Handle
RMAN-06213: --------------- ---------------------------------------------------
RMAN-06214: Backup Piece    /crmbak/archivelog/RMAN_ARCH75680364012.arc
RMAN-06214: Backup Piece    /crmbak/archivelog/RMAN_ARCH76680367633.arc
RMAN-06214: Backup Piece    /crmbak/archivelog/RMAN_ARCH77680371224.arc

RMAN> crosscheck backup of archivelog like '%archivelog%';

RMAN> change backuppiece '/crmbak/archivelog/RMAN_ARCH75680364012.arc' crosscheck ;
RMAN> change backuppiece '/crmbak/archivelog/RMAN_ARCH75680364012.arc' crosscheck ;
RMAN> change backuppiece '/crmbak/archivelog/RMAN_ARCH75680364012.arc' crosscheck ;
....

在执行下列操作后都无效：
RMAN> crosscheck backup of archivelog like '%archivelog%';

using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=1663 instance=ngcrm1 devtype=DISK

RMAN> crosscheck backup completed between 'sysdate-1';
RMAN> crosscheck backup of archivelog all;
RMAN> change archivelog all crosscheck;
...
上述命令都无法将这部分mismatched的备份片标记为"EXPIRED"。无法清楚控制文件中的这部分信息

。


"mismatched status"实在没找到这个错误的好的解决办法。
只能逐个备份片交叉检查，或者按备份集进行检查。
RMAN> crosscheck backuppiece '/archivelog/RMAN_ARCH44680014814.arc';

using channel ORA_DISK_1
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/archivelog/RMAN_ARCH44680014814.arc recid=90 stamp=680018411
Crosschecked 1 objects

或者
RMAN> change backupset 11 crosscheck ;

using channel ORA_DISK_1
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/archivelog/RMAN_ARCH17679971606.arc recid=11 stamp=679971607
Crosschecked 1 objects

然后可以进行删除。