We have an Entity bean that basically fronts a table with key-value pairs representing sequence numbers. The method that actually get the next sequence value has a transaction setting of 'RequiresNew' and the commit-option for the bean is 'C'. Under normal loads the server is just fine and the bean returns unique values. However, under much higher loads the server is returning duplicate values!!
Could you, please, post this problem to the jboss user mailing list?