It`s a matter of cascade. Read EJB 3.0 persistence spec.
You can map wanted cascade values.
I missunderstood you. Basically it is not enabled by default (acessing child list should throw then LazyInitializationException if refering in page), but which entitymanager do you use? Seam for example fetches all lists.
Sorry I'm quite newbie with J2EE..
Where is entitymanager defined/configured?
I'm using EJB 2.x entity beans...