Connect to JDE via Portal or 3rd Party (ASP)


My client has an existing ASP/HTML application that allows customers to login and see information in their existing AS400 ERP system. They are installing EnterpriseOne, and looking for guidance on if they should continue using their existing solution, and connect to the new JDE Database (oracle) or explore the out of the box JDE Portal solutions.

My questions:
1. Will the JDE Portal work with an Oracle Database?
2. Does anyone have a demo or know how to demo the JDE Portal?
3. If connecting an existing ASP/HTML application to the JDE ORacle Database, how should we do this? INstalling a fat client on their web server is NOT an option. I have not found anything definitive on if we should use an ODBC/ODA connector, or just use the ORacle client and connect direct to the database files, and handle all of the DD translations manually.