In 5.2, tests fail on Oracle:
remains to be reviewed and integrated separately.
Sent PR https://github.com/hibernate/hibernate-orm/pull/1671 with backport of part of this to 5.1 (only GeneratedColumnTest, the others don't seem to fail)
Nah, they actually do, sent PR https://github.com/hibernate/hibernate-orm/pull/1676 with full backport of this
Fixed in 5.1 branch as well.