rman备份后恢复不了

我在suse下进行rman备份，然后恢复数据，但是恢复不了了，出现个问题，请各位大哥帮忙解决下
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 08/19/2010 15:40:01
RMAN-06026: some targets not found - aborting restore
RMAN-06025: no backup of archived log for thread 1 with sequence 972 and starting SCN of 41534693 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 971 and starting SCN of 41511124 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 970 and starting SCN of 41475694 found to restore

RMAN-06025根据这个错误号看看。看样子是archived log有问题。