See: http://docs.jboss.org/jbpm/v5.1/userguide/ch07.html#d0e2745
ksession = JPAKnowledgeService.loadStatefulKnowledgeSession( sessionId, kbase, null, env );
To recreate session, you need to know sessionId. But what I don't know how to get it in a smart way.
Is there an good practice how to get sessionId?