nonshareable oracle session

[juergenb]

environment:
Seam 2.2.0.GA and Websphere 6.1.x

I'm facing following requirement:
A simple CRUD-Application connects to an oracle schema which
uses global package variables.

Now it will be complicated:
The scope of these variables has to be the same as the session scope of the web application users.
So, how can I use one datbase session for every web user?

I have no clue how to proceed.
Please help!

Jürgen

[juergenb]

So, how can I use one datbase session for every web user?

Of course I would like to say: One user has to use one nonshareable database session.