Hibernate fails to read DTD intermittently

We have recently upgraded to 4.1.7 and are experiencing issue time to time (very intermittently) on initializing SessionFactory because of unable to read DTD remotely.

Configuration configuration = new Configuration().configure();
			ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()). buildServiceRegistry();
			sessionFactory = configuration.buildSessionFactory(serviceRegistry);

If we switch to referencing locally, all works well.

<!DOCTYPE hibernate-configuration
    PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"


<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration SYSTEM 

We don’t this this is due to network. We are able to reference all other schema references when this one fails

Any help will be appreciated.

This is how the DTD looks like in Hibernate 5.

<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

Now, you can also use a local DTD, if that works faster for you. Just update your HBM files and hibernate.cfg.xml to reference the local one.

Thanks Vlad for your quick reply.