org.hibernate.test.legacy.FumTest hangs on oracle12c. It doesn't freeze completely but it's very slow because of test timeouts.

Some tests raises ObjectNotFoundException
e.g.

org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [org.hibernate.test.legacy.Fum#org.hibernate.test.legacy.FumCompositeID@cc3]

It didn't hang with 4.2.5.Final

and some timeouts
java.lang.Exception: test timed out after 1800000 milliseconds