J J [http://community.jboss.org/people/joshjdevl] created the discussion "Re: jbpm hibernate persistence" To view the discussion, visit: http://community.jboss.org/message/595166#595166 -------------------------------------------------------------- Do you have an example to share? I tried {code} env.set(EnvironmentName.TRANSACTION, jtaTransactionManager.getUserTransaction()); {code} Though receive {code} Caused by: java.lang.reflect.InvocationTargetException           at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)           at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)           at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)           at java.lang.reflect.Constructor.newInstance(Constructor.java:532)           at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:116)           ... 34 more Caused by: java.lang.RuntimeException: Could not commit session           at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:136)           ... 39 more Caused by: java.lang.NullPointerException           at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:125)           ... 39 more {code} -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/595166#595166] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]