private void getNumCon() {
        //Maintenance debug method, for getting all number of alive connections and connection pools - use to debug current state of the pool.
        try {
            System.out.println("Number of Connections: " + cpds.getNumConnections());
            System.out.println("Number of Idle Connections: " + cpds.getNumIdleConnections());
            System.out.println("Number of Busy Connections: " + cpds.getNumBusyConnections());
            System.out.println("Number of Connection Pools: " + cpds.getNumUserPools());
            System.out.println("");
        } catch (SQLException ex) {
            printSQLException(ex);
        }
    }