while i do online backup error in db13 :-
BR0278E Command output of 'LANG=C dd obs=64k bs=64k if=/oracle/PRD/sapdata1/sr3_1/sr3.data1 of=/dev/rmt0.1':
dd: /oracle/PRD/sapdata1/sr3_1/sr3.data1: Invalid argument
BR0280I BRBACKUP time stamp: 2014-06-04 01.00.46
BR0279E Return code from 'LANG=C dd obs=64k bs=64k if=/oracle/PRD/sapdata1/sr3_1/sr3.data1 of=/dev/rmt0.1': 2
BR0222E Copying /oracle/PRD/sapdata1/sr3_1/sr3.data1 to/from /dev/rmt0.1 failed due to previous errors
BR0280I BRBACKUP time stamp: 2014-06-04 01.00.48
BR0317I 'Alter tablespace PSAPSR3 end backup' successful
BR0056I End of database backup: benzqjev.ant 2014-06-04 01.00.46
BR0280I BRBACKUP time stamp: 2014-06-04 01.00.48
BR0054I BRBACKUP terminated with errors
attached detailed log