POOLMAN - HELP

[Sri Rangan]

I am using a HYPERSONIC stand alone Data base (allows only one connection)in Visual Age. We use POOLMAN to get the Datasource and the connection.(We plan to use the HUPERSONIC AS a server database also).
Now When I run my Swing app in Visualage, first time I am able to run with out any problem.When I close the Swing App and open again, I get the error message "Another app is using the database".
I think POOLMAN is not releasing the connection when the Swing app is exited.
Is there a way to force the POOLMAN to close the data base connection.
Thanks