Oracle Portal

I am in the procees to implement private area to our main webstite on
the internet.
The private zone will allow authorized individual person inside and
outside the country to view his/her own data and transaction
For membership sign in, if they have paid. Payment would be made either
by coming in person to Main Office or electronically by e-pay
Our Backend Database Server running Oracle 9i web application on
PowerPC pSeries UNIX AIX 5L

I am looking for a solution to pull up live data between form Backend
Database Server to the web server.

Would it be better to retrieve Data from DB oracle through PHP ASP
....etc. or through oracle portal solution?