Create the policy with the virtual name as client name.
Ensure that forward and reverse lookup is successful using the virtual name and IP address.
The NBU install on the cluster nodes put sample scripts in /usr/openv/netbackup/ext/db_ext/oracle/samples/rman.
Copy these samples to a folder on shared disk.
Ask the Oracle DBA to customize test script(s).
Ensure that the virtual name is hard-coded in the script using NB_ORA_CLIENT variable.
Have a look at "
About the RMAN SEND command variables" section in the NBU for Oracle manual.
e.g:
.....
ALLOCATE CHANNEL ch00 TYPE 'SBT_TAPE';
SEND 'NB_ORA_CLIENT=
virtual_name';
BACKUP
DATABASE;
....
Backing up of archive logs depend on whether the archive logs are accessible by each node in the cluster. If they are not, then the archive logs need to be backed up separately on each node.
See "
About archiving schemes" in the same manual.