[jboss-user] [jBPM] - JBPM 4.4 and Spring Integration Problem: Session is closed

[Bryan Shaw]

Bryan Shaw [http://community.jboss.org/people/silverhoof] created the discussion

"JBPM 4.4 and Spring Integration Problem: Session is closed"

To view the discussion, visit: http://community.jboss.org/message/587042#587042

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I have encountered problem when I am using JBPM 4.4 with Spring 3.5 and Hibernate 3 and Struts2.
When we put multiple users to use the system, JBPM operation will randomly cause Hibernate Exception states: "Session is closed".
I have checked the JBPM + Spring integration configuration and I can't found error.
Did anybody encountered the same problem here? Please lend a hand to help me.

This is my "jbpm.tx.spring.cfg.xml"
*
*
<?xml version="1.0" encoding="UTF-8"?> 
     <jbpm-configuration spring="enabled">
     <process-engine-context>
            <command-service name="newTxRequiredCommandService">
              <retry-interceptor />
              <environment-interceptor policy="requiresNew" />
              <spring-transaction-interceptor transaction-manager="transactionManager" policy="requiresNew" current="false"/>
            </command-service>

         <!-- Default command service has a Spring transaction interceptor-->
         <command-service name="txRequiredCommandService">
                <retry-interceptor />
                <environment-interceptor />
                <spring-transaction-interceptor transaction-manager="transactionManager" current="true"/>
         </command-service>
    </process-engine-context>

     <transaction-context>
         <transaction type="spring" />
         <hibernate-session current="true" close="false" tx="true"/>
    </transaction-context>

</jbpm-configuration>

And my jbpm-cfg.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<jbpm-configuration>
  <import resource="jbpm.default.cfg.xml" />
  <import resource="jbpm.tx.spring.cfg.xml" />
  <import resource="jbpm.jpdl.cfg.xml" />
  <!--<import resource="jbpm.bpmn.cfg.xml" />-->
  <import resource="jbpm.identity.cfg.xml" />
  <import resource="jbpm.businesscalendar.cfg.xml" />
  <import resource="jbpm.console.cfg.xml" />
  <import resource="jbpm.jobexecutor.cfg.xml" />
  <types resource="jbpm.variable.types.xml" />
</jbpm-configuration>

We use OpenSessionInView filter in our web application that means every request will have its own hibernate session opened for it.
But we find that even I begin a request handling action method with a call to the JBPM task service it still may cause session is closed error.
Any idea?
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