Hi, how is concurrent access to the JBoss @Service bean? I have found that OpenEJB has similar @Singleton bean, which can specify the concurrency access, see http://openejb.apache.org/3.0/singleton-beans.html The container managed concurrency access: all invocations of the business methods are serialized. Bean managed concurrency access: the bean has to manage critical parts by itself. Does anybody know, how is the (default) @Service bean concurrency management in JBoss? Thanks Andy View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4222352#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...