Database Software

I've been running into a problem with my backup script. Everything was working until the hard drives containing the archive log filled before being backed up to the backup server and purged from the hard drive. Some of the archive logs were moved to a temporary hard drive (via OS command), and updated the RMAN repository by using CROSSCHECK, and DELETE OBSOLETE. Now when I run the backup script, I get this error:


channel t1: starting incremental level 0 datafile backupset
channel t1: specifying datafile(s) in backupset
input datafile fno=00031 name=E:\ORACLE\DATAFILE\ORCL\FILE2F3.DBF
input datafile fno=00079 name=E:\ORACLE\DATAFILE\ORCL\FILE_LRG10.DBF
input datafile fno=00094 name=E:\ORACLE\DATAFILE\ORCL\FILE2F26.DBF
channel t1: starting piece 1 at 2008-02-17:13:36:22
RMAN-03009: failure of backup command on t1 channel at 02/17/2008 13:46:17
ORA-19513: failed to identify sequential file
ORA-27206: requested file not found in media management catalog
continuing other job steps, job failed will not be re-run
channel t1: starting incremental level 0 datafile backupset
channel t1: specifying datafile(s) in backupset
input datafile fno=00029 name=E:\ORACLE\DATAFILE\ORCL\FILE2F1.DBF
input datafile fno=00032 name=E:\ORACLE\DATAFILE\ORCL\FILEF8.DBF
input datafile fno=00092 name=F:\ORACLE\DATAFILE\ORCL\FILE2F25.DBF

channel t1: starting piece 1 at 2008-02-17:13:46:17
released channel: t1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on t1 channel at 02/17/2008 13:55:12
ORA-19513: failed to identify sequential file
ORA-27206: requested file not found in media management catalog


All the datafiles exist, and I have no idea how to fix this problem. Any help? Thanks.