FinalizedClientSession on running newbie tutorial

Question

Hi,
I'm examining Toplink for persistancy layer. I started doing the standalone newbie-tutorial on http://www.oracle.com/technology/products/ias/toplink/doc/10131/main/_tutorial/intro/standalone/intro_tutorial.htm.
Having some experience with Hibernate, I'm really impressed by the ease of use of the TopLink workbench.
Everything goes according to plan until testing the application. Every time database access is required I get a "An Error Occurred"-page with
a oracle.toplink.internal.sessions.FinalizedClientSession.
In my first attempt I tried to run it on MySQL5.0, but even after downloading and using Oracle XE it still occurs.
My config:
Windows XP (SP2)
Oracle XE 10.2.0.1.0
TopLink (10.1.3.1.0)
OC4J standalone (10.1.3.2.0)
Java 1.5.0_06-b05
I tried to setup my session using a J2EE Datasource as well as JDBC (oracle.jdbc.driver.OracleDriver). Nothing works. Don't think it's a driver/database problem. Since a Google search on FinalizedClientSession returns 0 hits I expect this happens somewhere in the deep dark secret dungeons of Toplink.
Any ideas?
Grtz,
Roel

Answer 1

Doug,
That's part of the problem: there is no stack trace. On the client nor on the OC4J-console. The oracle.toplink.internal.sessions.FinalizedClientSession is all I get.
I found out I get another error (Error Code: 17002) when I forgot to startup my DB, so a missing database connection seems not the cause of my problem.
Does a session have some kind of timeout, after which it gets "finalized"?
Roel