Hibernate LazyInitializationException...please help

[jpappalardo]

I could really use some help, I've been trying to sort this out for a week on my own.

My setup:

Container is JBoss AS 7.0.2 Final
comes with Hibernate 4.0.0 CR2

server.properties

Any help would be greatly appreciated

[alius]

Hi,

As you can see from the logs - SC does following:
a) JPADataSource acquires EM (EntityManager) and TX (transaction)
b) JPADataSource executes query
c) JPADataSource commits TX
d) DataSource converts fetched entities to JS (and receives LazyInitializationException)
e) JPADataSource releases EM

To be exact: step e is NOOP - SC does absolutely nothing. SC expects java container to take care of closing EM.

Now we know - it should be a problem in J2EE server configuration.
I'm not an expert in JBoss. Let's try anyway.

First I would remove following lines from you persistence.xml:

<!--The built-in Hibernate connection pool is in no way intended for production use. It lacks several features found on any decent connection pool. -->
<property name="hibernate.connection.pool_size" value="0"/>
<!-- Enable Hibernate's automatic session context management -->
<property name="hibernate.current_session_context_class" value="thread"/>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.internal.NoCacheProvider"/>
<property name="hibernate.connection.release_mode" value="on_close"/>

Please tell me - does it have any effect.

Regards,
Alius

[jpappalardo]

No it does not make any difference

[alius]

While googling I've found suggestion: switch to eclipselink.

Can you do that for testing purposes?
By doing that you make sure that either ORM provider it not a cause or confirm it.

Regards,
Alius.

[alius]

One more suggestion:

try to add

<persistence-context-type>Extended</persistence-context-type>

to <persistence-context-ref> in web.xml.

Regards,
Alius

[jpappalardo]

addint the Extended fixed it. Thank you so much.