I use JBoss 3.0.6 with Jetty .
I Have configured an Oracle Pool Connection.
My problem is that everytime I get a Connection:


//////
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
// Look up our data source

DataSource MyDS = (DataSource) envCtx.lookup("jdbc/MyDS");

conn = MyDS.getConnection();

The number of available connection
AvailableConnectionCount decrease of 1


but if I close the connection :

conn.close();

This number doesn't increase.
Why?

Thanks.
C.