private static SessionFactory buildSessionFactory() {

        // Create the SessionFactory from hibernate.cfg.xml
        Configuration configuration = new Configuration();
        configuration.configure();

        configuration.setProperty("hibernate.connection.url", myUrl);
        configuration.setProperty("hibernate.connection.username", myUser);
        configuration.setProperty("hibernate.connection.password", myPass);

        serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();

        return configuration.buildSessionFactory(serviceRegistry);
}

protected void startOperation() {
    session = HibernateUtil.getSessionFactory().openSession();
    tx = session.beginTransaction();
}

configuration.setProperty("hibernate.hbm2ddl.auto", "create-drop");