failure of backup plus archivelog command

I am using rman to do a full database backup plus the archive logs. The backup fails with this error:
failure of backup plus archivelog command at 02/04/2010 14:30:41
ORA-19505: failed to identify file "/data3/oradata/axium/arch/1_553_707676115.db
f"
ORA-27037: unable to obtain file status
IBM AIX RISC System/6000 Error: 2: No such file or directory
Additional information: 3

the arcive log in question is there.

here is the script I am running:
run {
crosscheck archivelog all;
backup as compressed backupset database plus archivelog;
}
exit

if I look at the log file from the rman command when it does the crosscheck archive log all, it validates the file is there.

after the the rman script fails, the file is no longer there.

some one might have physically deleted that file after cross check and before RMAN actually backup that file.

Thanks,

thank you for the quick responce. The crosscheck runs right before the db gets backed up. I don't think somone is deleteing the file. I think the crosscheck command may be doing it, but if it thinks it should be deleted because it isn't needed then why is rman trying to back it up.

cross check never deletes any file no matter whether it is required for backup or not. It just updates the RMAN repository.

run crosscheck archivelog all command once again and take the backup.

Thanks,

you are doing a crosscheck but not deleting the obsolete ones