[rules-users] Exception using persistence

Hi, I followed the instructions on setting up the persistence in the drools flow doc, but I get the following exception: Exception in thread "main" java.lang.RuntimeException: Could not commit session at org.drools.persistence.session.SingleSessionCommandService.<init>(SingleSessionCommandService.java:133) at org.drools.persistence.jpa.impl.JPAKnowledgeServiceProviderImpl.newStatefulKnowledgeSession(JPAKnowledgeServiceProviderImpl.java:44) at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:93) at com.rob.server.core.process.drools.tasks.DroolsProcessHandler.<init>(DroolsProcessHandler.scala:130) at com.rob.server.core.process.drools.tasks.StartDroolsProcessHandler$.main(DroolsProcessHandler.scala:33) at com.rob.server.core.process.drools.tasks.StartDroolsProcessHandler.main(DroolsProcessHandler.scala) Caused by: javax.naming.NameNotFoundException; remaining name 'UserTransaction' at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:576) at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:663) at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:678) at org.eclipse.jetty.jndi.java.javaRootURLContext.lookup(javaRootURLContext.java:110) at javax.naming.InitialContext.lookup(InitialContext.java:392) at org.drools.persistence.session.SingleSessionCommandService.<init>(SingleSessionCommandService.java:109) ... 5 more I have no idea what this means. I guess SingleSessionCommandService is looking up for "UserTransaction", but whats the "UserTransaction" ? Cheers, Rob. -- Erstellt mit Operas revolutionärem E-Mail-Modul: http://www.opera.com/mail/