Hi All,


I am using hibernate 3.0 as persistence framework and
the transaction is controlled by the WebSphere server
and using stateless session bean ejb's for
business logic , Database is DB2.

Am facing a strange problem while saving the hibernate session
to the database.

The code looks like as follows :

session().saveOrUpdate(objToSave);


This throws an exception PK:null some times.
But when i retry the same thing next time, it works fine !

So why this data persistence behaves like this ?

Can any one help ??


Expecting your reply soon..!


Thanks in Advance ;)