Why is Hibernate Open Session in View considered a bad practice?

Question

And what kind of alternative strategies do you use for avoiding LazyLoadExceptions?

I do understand that open session in view has issues with:

• Layered

Answer 1

I am v. rusty on Hibernate.. but I think its possible to have multiple transactions in one Hibernate session. So your transaction boundaries do not have to be the same as session start/stop events.

OSIV, imo, primarily is useful because we can avoid writing code for starting a 'persistence context' (a.k.a. session) every time the request needs to make a DB access.

In your service layer, you will probably need to make calls to methods which have different transaction needs, such as 'Required, New Required, etc.' The only thing these methods need is that somebody (i.e the OSIV filter) has started up the persistence context, so that only thing they have to worry about is - "hey give me the hibernate session for this thread.. I need to do some DB stuff".