OK the first error is fixed. On the backpsystem the orapwd file was missing
but now i had a new error
[Major] From: ob2rman@HOST2 "SWR1" Time: 03/20/14 13:18:51
The database reported error while performing requested operation.
ORA-09925: Unable to create audit trail file
Linux-x86_64 Error: 30: Read-only file system
Additional information: 9925