If org.Hibernate.PropertyValueException is coming in hibernate after 
that session is not working.I am displaying an error page.From that 
page i am trying to login its giving the same exception 
(org.Hibernate.PropertyValueException )in session.CreateQuery.But i am 
creating new session always.I have to stop the jboss server and 
restart it to again login.I am using mySql database.

In production its very difficult to deal with this situation.

Please help me to fix this problem.
Waiting for reply.

Thankns in advance.