在Oracle11g的rman中，如：
RMAN> delete archivelog all;
RMAN-06207: WARNING: 1 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: Archivelog +ARCHDG/cboms/archivelog/2010_12_15/thread_2_seq_115
RMAN> crosscheck archivelog all;
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=588 instance=cboms1 device type=DISK
validation succeeded for archived log
archived log file name=+ARCHDG/cboms/archivelog/2010_12_20/thread_1_seq_161.321.738252445 RECID=390 STAMP=738252447
validation failed for archived log
archived log file name=+ARCHDG/cboms/archivelog/2010_12_15/thread_2_seq_115.276.737837641 RECID=325 STAMP=737837643
validation succeeded for archived log
archived log file name=+ARCHDG/cboms/archivelog/2010_12_20/thread_2_seq_156.323.738252443 RECID=389 STAMP=738252446
Crosschecked 3 objects
RMAN> delete expired archivelog all;
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=588 instance=cboms1 device type=DISK
List of Archived Log Copies for database with db_unique_name CBOMS
=====================================================================
Key Thrd Seq S Low Time
------- ---- ------- - ---------
325 2 115 X 15-DEC-10
Name: +ARCHDG/cboms/archivelog/2010_12_15/thread_2_seq_115.276.737837641
Do you really want to delete the above objects (enter YES or NO)? YES
deleted archived log
archived log file name=+ARCHDG/cboms/archivelog/2010_12_15/thread_2_seq_115.276.737837641 RECID=325 STAMP=737837643
Deleted 1 EXPIRED objects