Hi David,
[EMAIL PROTECTED] wrote:
Hi Armin,
I'm writing an application using session beans and Ojb, and deploy on Jboss in development and on WebLogic in prod. I'm facing problems with ObjectCacheDefaultImpl when the application is heavily used in prod. It seems that the synchronized statement in the cache does not behave correctly, and then the objects in he cache are corrupted.
Are you aware of this problem ?
Could you describe more detailed? Does it happen after a rollback or does it happen on commit action too.
Which OJB version do you use, which API?
Did you face it before ?
No, but if the problems occur after a rollback the problem could be caused by call of PBStateListener#beforeClose, because this method was called twice in managed environments.
Do you have a solution ?
Please replace the following methods in ObjectCacheDefaultImpl and run your test again. Maybe this will solve the problem.
public void beforeRollback(PBStateEvent event)
{
synchronizeWithTracedObjects();
identitiesInWork.clear();
}public void beforeCommit(PBStateEvent event)
{
// identitiesInWork.clear();
}public void beforeClose(PBStateEvent event)
{
if(!broker.isInTransaction())
{
identitiesInWork.clear();
}
}public void afterCommit(PBStateEvent event)
{
identitiesInWork.clear();
}I've implemented the following solution: I've implemented a new class for the cache, this class calling a session bean (max-bean-in-free-pool = 1). I then ensure that the synchronized access to the cache is done using the singleton session bean.
What do you think of this solution ? Are you interested in the code ?
If we can't fix this problem I'm seriously interested in a "workaround" for managed environments.
regards, Armin
David WIESZTAL.
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