When Hibernate flushes a Session, how does it decide which objects in the session are dirty?

Question

My understanding of Hibernate is that as objects are loaded from the DB they are added to the Session. At various points, depending on your configuration, the session is flu

Answer 1

Hibernate default dirty checking mechanism will traverse current attached entities and match all properties against their initial loading-time values.

You can better visualize this process in the following diagram: