Storing session data in database

We need to deploy our ScriptCase application to a cluster of web servers. The web servers have access to an Oracle database so we are trying to have the session data stored in a table in our Oracle database. We enabled “Save session data in database” and provided the required information (Connection / Table Name / Schema Name) using the same values we use for configuring the database connection of the application.
Has anybody been able to get session data to be stored in a database table?
What structure should the database table have?
Any pointers to get this feature working will be appreciated.