Cannot Passivate Stateful Session Bean

[guurk]

I'm getting this EJBException:

Exception in thread "Timer-7"
javax.ejb.EJBException: Could not passivate; failed to save state; CausedByException is:

org.gmud.server.ejb.session.GMudSession
at org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager.passivateSession(StatefulSessionFilePersistenceManager.java:335)
at org.jboss.ejb3.cache.simpleSimpleStatefulCache.passivate(SimpleStatefulCache.java:143)

Just figured that someone would want to know. I have to bring down the server and bring back up again before this one fixes...

[bill.burke]

Are you sure this is not a bug in your Stateful bean class?

* Is it Serializable?
* Do you have a non-transient field that is non-serializable?

I ask this because we do actually test this stuff...

[guurk]

Oh, I'm sure I screwed up somewhere... never worry :P.

The question is more what I screwed up...

The only member variable is one for a reference to a single entity. And yes, that is serializable.

However, oddly that particular variable is still null when trying to passivate. So it shouldn't effect anything.

I've even put in @PrePassivate and @PostActivate to double check things... to no avail.

(A full code post is difficult since the code is on a non-internet connected network).

[guurk]

Doh... my bad... just like I said.

I guess I should actually read your post ;).

My stateful is now serializable and works just fine...

It might however be a good idea to include that in the Stateful tutorial... just a thought.

Thanks.

[bill.burke]

A good test is to add a method to your SFSB:

Particularly:

public void serializeMe() {
java.rmi.MarshalledObject mo = new MarshalledObject(this);
mo.get();
}

There could be a bug in our code...Do you ahve any services like UserTrasnaction, EntityManager, etc... as members of the SFSB class?

[bill.burke]

"guurk" wrote:
It might however be a good idea to include that in the Stateful tutorial... just a thought.

Doh! I'm a *bleepin* idiot...Tutorial fixed...Apologies.