"failed to lazily initialize a collection of role" exception occurs even when I use OSIV pattern

Question

I'm using OpenSessionInViewInterceptor to avoid LazyInitializationException.

It worked fine, but from sometime LazyInitializationException occurs even I'm using OSIV. The exceptions are like this:

SEVERE: Servlet.service() for servlet [appServlet] in context with path [] 
    threw exception [Request processing failed; nested exception is 
    org.apache.tiles.impl.CannotRenderException: ServletException including path 
    '/WEB-INF/views/home/master.jsp'.] with root cause org.hibernate.LazyInitializationException: 
    failed to lazily initialize a collection of role: com..., 
    no session or session was closed 
        at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersisten
tCollection.java:383)
        at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(Abs
tractPersistentCollection.java:375)
        at

More weird thing is that the exception log is only in log files and there's no problem to navigate web site.

How is this happen?

Are you doing any threading in your application? Can you show the relevant part of the applicationContext.xml/web.xml where you set up the OpenSessionInViewInterceptor? It would also probably help to see the area of the code that's causing the exception to be thrown. — Tim Pote, Apr 07 '12 at 18:03

score 0 · Answer 1 · edited May 23 '17 at 11:51

0

This usually happen when you work with a dettached object. You have to re-attach the object to a session so Hibernate can work with it.

Use session.merge() or session.refresh()

Here you have some examples too: What is the proper way to re-attach detached objects in Hibernate?

edited May 23 '17 at 11:51

Community

1
1

answered Apr 11 '12 at 03:43

Fisu

2,534
1
15
14

Sanghyun Lee · Answer 2 · 2015-10-04T07:30:17.740

0

In my case, it was because of cached objects. As cached objects were detached LazyInitializationException occurred while accessing to some properties, which hasn't been initialized, later.

edited Oct 04 '15 at 07:30

answered May 21 '12 at 06:55

Sanghyun Lee

21,644
19
100
126

"failed to lazily initialize a collection of role" exception occurs even when I use OSIV pattern

2 Answers2