Backup Strategy for Oracle App Server

Hi List, I'm in the process of implementing a new Oracle Application Server (10.1.2.0.2) and trying to decide on the best backup strategy. I'm pretty new to OAS, but I've read the documentation on OAS Backup & Recovery
(http://download-west.oracle.com/docs/cd/B14099_19/core.1012/b13995/part
5.htm) and it seems to be all about backing up to disk only. We have a tape library where we typically backup all our servers and databases
(with RMAN & Netbackup), so I'd like to use this approach rather than
(or at least in addition to) using the OAS Backup & Recovery tool to
create backups to disk. Would it be effective to just backup my Metadata Repository database straight to tape, and backup all the $ORACLE_HOME files for my OAS instances (Infrastructure - Metadata Repository & Identity Mgmt; Middle Tier - Business Intelligence & Forms) straight to tape as well, or is there some reason why we should use the backup & recovery tool to backup to disk instead? If any of you are running OAS, could you please share your preferred backup strategy?  

Thanks,

Brandon  

Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.

--
http://www.freelists.org/webpage/oracle-l