Connection pool problems with EJB's

I'm using j2ee with an InstantDB data base.

I take connections from a datasource properly registered....

When I start the j2ee server, it reads informations from the DB and appears to work properly, but if I make changes to the DB tables from another application, these changes are not visible to the j2ee application client unless I shut down the server and starts it again..

The server seems not to release the datasource until the connection time out occurs.

Am I having a caching problem? A Connection Problem? A Data Base bug? Is there anybody who could help me?

Thanks in Advance

[631 byte] By [squaloD] at [2007-9-26 2:20:57]