1. Check the following logs :
- /var/log/Avaya/CCR/backup/iqbackup.log
- /var/log/Avaya/CCR/backup/db_backup.log
2. You will see error message like below :-
RMAN-03009: failure of backup command on ch1 channel at 10/28/2014 12:00:16
ORA-01264: Unable to create backup piece file name
ORA-19800: Unable to initialize Oracle Managed Destination
Linux-x86_64 Error: 13: Permission denied
3. Check the permissions of directory on NFS location where IQ is storing the backup. Make sure all the directories have 777 permission level. If not then change it to 777
chmod 777 <file/directory name>