Hibernate Update

[Jon I.]

Would it be hard to update to Hibernate 5.x.Final version?

I've seen that OBA uses 3.3.1.GA, which is an old version. Anybody who uses OBA could be using one of the latest version of Hibernate. This leads to an exception due to version incompatibilities:

java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/classic/Session;

If someone explains me how to upgrade it, I'd do it happily.

Thank you!