Hello all!
I´m a new Hibernate user , doing some application tests so..


Suppose i have two objects loaded in diferent sessions and they point to the same row in database .

Session 1 Object A is deleted then in
Session 2 i try to insert it (Object A) on another object.

How could i threat this situation !?
Show an error and say to client to repeat the operation !?
Using version (optimistic locking ) our pessimistic locking ?!

Thanks in advance.

I hope someone help me !

:)

For starts, go out and purchase "Hibernate In Action" whcih has several excellent chapters on this very subject (Especially read Chapter 5 which covers concurency). Next, set up a test case to experiment on what happens.

Understanding what will happen depends on your understanding of the Transaction Isolation level you've chosen. You'll need to take a look at what your concurrency needs are before choosing a level.

Concurrency is a fact of life in multi-user applications. It's important to understand the issues at hand and how the tool deals with them. Chapter 5 of the book will help you figure it all out.

Thank you cardsharp , i´ll implement some tests.