[jboss-user] [JBossCache] - Re: NPE when using optimistic locking with JbossCache 1.4.0.
do-not-reply at jboss.com
Fri Oct 27 02:45:22 EDT 2006
I don't have a unit test but I could send you a trace if that helps you.
The problem is happening in a transaction that is starting from a Message driven bean and calls several Session beans (all have transaction required attributes). So all the method calls participate in the same transaction.
When I execute one message at a time everything works correctly but when I fill the queue with many messages (many concurrent transactions) the problem appears.
In the Session beans the hibernate session usage is like...
When the operation is real-only, or
When the operation is read-write.
When I use pessimistic locking everything works ok. The problem appears only when I use the optimistic locking cache.
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