[jboss-user] [jBPM] - Re: persisted stateful sessions and knowledge base changes

Demian Calcaprina [http://community.jboss.org/people/calca] created the discussion "Re: persisted stateful sessions and knowledge base changes" To view the discussion, visit: http://community.jboss.org/message/629929#629929 -------------------------------------------------------------- Hi Maciej. Yes, it is a similar case than mine too. I have (for now, changing it) one session which I reload everytime I start the app, and I have an agent to rebuild my knowledge base. From time to time, I am facing a similar exception when loading the session, which I think it is caused to some changes in kbase: Caused by: java.lang.reflect.InvocationTargetException         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)          at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)         at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommanService(KnowledgeStoreServiceImpl.java:88)          ... 35 more Caused by: java.lang.RuntimeException: Unable to load session snapshot         at org.drools.persistence.SessionMarshallingHelper.loadSnapshot(SessionMarshallingHelper.java:96)         at org.drools.persistence.SingleSessionCommandService.initKsession(SingleSessionCommandService.java:193)          at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:157)         ... 40 more Caused by: java.lang.NullPointerException         at org.drools.common.ConcurrentNodeMemories.getNodeMemory(ConcurrentNodeMemories.java:65)          at org.drools.common.AbstractWorkingMemory.getNodeMemory(AbstractWorkingMemory.java:1035)         at org.drools.marshalling.impl.InputMarshaller.readFactHandles(InputMarshaller.java:327)         at org.drools.marshalling.impl.InputMarshaller.readSession(InputMarshaller.java:221)          at org.drools.marshalling.impl.DefaultMarshaller.unmarshall(DefaultMarshaller.java:92)         at org.drools.persistence.SessionMarshallingHelper.loadSnapshot(SessionMarshallingHelper.java:91)         ... 42 more Thanks, Demian -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629929#629929] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]