From an SR I currently have out with Oracle.
2. Although the documentation does not explicitly state this, it is necessary to create a new user that owns the $O_H created by the OMS install. Please indicate if this is the case in your environment. Naturally the answer was no, we didn't create a new user to own the OMS when this isn't listed as a requirement.
-- Niall Litchfield Oracle DBA http://www.orawin.info