MSC controller hangs when loading an ear with multiple persistence units on a single CPU core machine ----------------------------------------------------------------------------------------------------- Key: AS7-4786 URL: https://issues.jboss.org/browse/AS7-4786 Project: Application Server 7 Issue Type: Bug Components: JPA / Hibernate Affects Versions: 7.1.1.Final Environment: Centos 6, single core lib-virt VM Reporter: Wouter De Borger Assignee: Scott Marlow Labels: hibernate, naming, race Fix For: 7.2.0.Alpha1 Attachments: hungas7.txt When deploying an EAR with two persistence units on single core machines, the server hangs. When increasing the number of cores to two, the same server just works. I traced the bug to the method in org.jboss.as.naming.WritableServiceBasedNamingStore.unbind The container attempts to register "hibernate/SessionFactory" twice. The first time it works, the second time it hangs on the wait statement. I suspect a race condition in the ServiceControllerImpl.