public void destroy() {
        System.out.println("*************************destroy*****************************");
        try {
            System.out.println("Calling MySQL AbandonedConnectionCleanupThread shutdown");
            com.mysql.jdbc.AbandonedConnectionCleanupThread.shutdown();

        } catch (InterruptedException e) {
            System.out.println("Error calling MySQL AbandonedConnectionCleanupThread shutdown {}" + e);
        }

        ClassLoader cl = Thread.currentThread().getContextClassLoader();

        Enumeration<Driver> drivers = DriverManager.getDrivers();
        while (drivers.hasMoreElements()) {
            Driver driver = drivers.nextElement();

            if (driver.getClass().getClassLoader() == cl) {

                try {
                    System.out.println("Deregistering JDBC driver {}" + driver);
                    DriverManager.deregisterDriver(driver);

                } catch (SQLException ex) {
                    System.out.println("Error deregistering JDBC driver {}" + driver + ex);
                }

            } else {
                System.out.println("Not deregistering JDBC driver {} as it does not belong to this webapp's ClassLoader" + driver);
            }
        }
        System.out.println("************************* driver u *****************************");
    }