hibernate.LazyInitializationException

krishnakumar.j · **Joined:** Thu Oct 12, 2006 7:17 am **Posts:** 1

Hi,

My application currently running in Tomcat5.0 & SAP Web AS 6.40, but
the same application is not working JBOSS.

Architecture

JSP, Sturts, Spring, Hibernate

Db: MS SQL Sever 2000.

In hbm.xml file, Many-to-one relationship exist , while displaying data in JSP Page , it shows the following error.

Quote:

org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed.

Can you suggest some thing about this. I would appreciate your help.

Wbr,
KK

mseritan · **Posted:** Thu Oct 12, 2006 9:59 am

You provided little information, some guesses below.

Can you post more of the stack trace?

What version of JBoss are you using and how is hibernate configured?
Look in the jboss server log and validate that the proper version of hibernate is used, maybe your jboss installation provided you with a second jar.

Check to see if there are other errors in the server.log

Marius

MikePloed · **Posted:** Thu Oct 12, 2006 10:44 am

It appears (judging from the little information you provided) that you have closed the Hibernate session (or it was closed by Springs "lovely" HibernateTemplate) before you pass your POJOs to the JSP which tries to access a collection which was mapped as lazy and has not been loaded.

Please have a look at the Open Session in View Pattern described here:
http://www.hibernate.org/43.html

tbech · **Joined:** Fri Oct 28, 2005 7:11 am **Posts:** 20

If it EJB, you didn't properly start/finish transaction.
If you have any lazy properties, and you give back the Hibernate POJO to JSP and try to read this property, such expection is thrown as well.