Driver.getConnection forever waiting

[lockev3.0]

Hi.
I have a simple application to issue every x seconds a query against a remote database (mysql). I use the mysql jdbc4 driver and got a serious trouble :

• My app is intended just to test connection to remote DB
• If the remote host gets suddenly unplugged ==> my app won't ever respond no more and just will stay in the last connection trial forever.
• If, at such moment, I issue netstat -patun | grep EST | grep my_remote_host, indeed the connection seems to remains there established forever unless I kill my little app.

am i missing a base networking concept ? how else could I monitorize my connection to the remote db ?

my chunk code (somewhere in that try it hooks, never returns neither throws Exception) :

 try
                {
                        System.err.print("[MonitorReplicaBD ("+m_lPeriodo+")]-"
                                + (new GregorianCalendar().getTime())+" - ");
                        Class.forName(DEFAULT_DB_DRIVER);
                        if ( this.timeout != 0 )
                        {
                                final InetAddress ia =
                                        InetAddress.getByName (m_sHost);
                                final boolean reachable =
                                        ia.isReachable(timeout);
                                if ( ! reachable )
                                {
                                        ConnectException ce = new
                                         ConnectException("host unreachable");

                                        throw new SQLException(m_sHost + " OFF"
                                                                , ce);
                                }
                        }
                        final Connection conn = dameConexion();
                        final Statement st = conn.createStatement();
                        final ResultSet rs = st.executeQuery(SQL_CHECK);
}
                //catch(CommunicationsException ce)
                catch(SQLException sqle)
                {
                        //TODO: ACCION ALERTA
                        System.err.println(" ERROR: "+ sqle.getClass().getName()
                                + " CAUSE: " + sqle.getCause());
                }
                catch(Throwable t)
                {
                        t.printStackTrace();
                }

Thanks in advance.

[lockev3.0]

Some missing data I forgot to tell and which seems to be the cause of the problem: the above commented machines are virtualized.
Now my doubt is, shouldn't network layer be transparent when virtualized ?