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Re: How to measure the performance of JBPM
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created by <a href="https://community.jboss.org/people/sachin.francis">Sachin Francis</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/777666#777666">View the full discussion</a>
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<div class="jive-rendered-content"><p>But when i try to do it in multiple sessions, i mean a session per PI, i get the following error.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>ERROR hibernate.util.JDBCExceptionReporter.logExcepti<br/>ons  - Closed Connection<br/>56   21/11 14:14:04,586[http-8061-Processor23] ERROR drools.persistence.SingleSessionCommandService.<br/>rollbackTransaction  - Could not commit session<br/>javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: could not get<br/>next sequence value<br/>        at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManag<br/>erImpl.java:614)<br/>        at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:226)<br/>        at org.drools.persistence.jpa.JpaPersistenceContext.persist(JpaPersistenceContext.java:17)<br/>        at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.jav<br/>a:152)<br/>        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)<br/>        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:<br/>39)<br/>        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorIm<br/>pl.java:27)<br/>        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)<br/>        at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreSe<br/>rviceImpl.java:129)<br/>        at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(Knowledg<br/>eStoreServiceImpl.java:67)<br/>        at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeSe<br/>rvice.java:122)<br/>        at com.comp.bpm.test.util.JBPMManager.createAndProcessWithSetVariable(JBPMManager.java:82)</p><p>        at org.apache.jsp.jsp.createProcess_jsp._jspService(createProcess_jsp.java:82)<br/>        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)<br/>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)<br/>        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)<br/>        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)<br/>        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)<br/>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)<br/>        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j<br/>ava:269)<br/>        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)</p><p>        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)<br/>        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)<br/>        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)<br/>        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)<br/>        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)<br/>        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)<br/>        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)<br/>        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Htt<br/>p11BaseProtocol.java:665)<br/>        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)<br/>        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.ja<br/>va:81)<br/>        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)<br/>        at java.lang.Thread.run(Thread.java:619)<br/>Caused by: org.hibernate.exception.GenericJDBCException: could not get next sequence value<br/>        at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.j<br/>ava:126)<br/>        at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)<br/>        at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)<br/>        at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:119)<br/>        at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventLi<br/>stener.java:122)<br/>        at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventList<br/>ener.java:49)<br/>        at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEvent<br/>Listener.java:154)<br/>        at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener<br/>.java:110)<br/>        at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener<br/>.java:61)<br/>        at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:646)<br/>        at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:620)<br/>        at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:624)<br/>        at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220)<br/>        ... 31 more<br/>Caused by: java.sql.SQLException: Closed Connection<br/>        at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)<br/>        at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:131)<br/>        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:197)<br/>        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:261)<br/>        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:269)<br/>        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:490)<br/>        at oracle.jdbc.driver.PhysicalConnection.prepareStatement(PhysicalConnection.java:3127)<br/>        at oracle.jdbc.driver.PhysicalConnection.prepareStatement(PhysicalConnection.java:3042)<br/>        at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534)<br/>        at org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:145)<br/>        at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:96)<br/>        ... 40 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>ERROR event.def.AbstractFlushingEventListener.perfo<br/>rmExecutions  - Could not synchronize database state with session<br/>org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsav<br/>ed-value mapping was incorrect): [org.jbpm.persistence.processinstance.ProcessInstanceInfo#346]<br/>        at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java<br/>:1782)<br/>        at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.jav<br/>a:2541)<br/>        at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.jav<br/>a:2715)<br/>        at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:97)<br/>        at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)<br/>        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263)<br/>        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:172)<br/>        at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingE<br/>ventListener.java:321)<br/>        at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:<br/>50)<br/>        at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)<br/>        at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)<br/>        at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.<br/>java:504)<br/>        at bitronix.tm.BitronixTransaction.fireBeforeCompletionEvent(BitronixTransaction.java:478)<br/>        at bitronix.tm.BitronixTransaction.commit(BitronixTransaction.java:193)<br/>        at bitronix.tm.BitronixTransactionManager.commit(BitronixTransactionManager.java:120)<br/>        at org.drools.persistence.jta.JtaTransactionManager.commit(JtaTransactionManager.java:179)<br/>        at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.ja<br/>va:348)<br/>        at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedSta<br/>tefulKnowledgeSession.java:223)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The method which is call for creating the process is </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public static long createAndProcessWithSetVariable(String id,Map<String, Object> assigneeList) {<br/> <span style="font-size: 10pt;"><span style="font-size: 2;"><p>StatefulKnowledgeSession </p></span>ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase,null, env);<br/> ProcessInstance pid = ksession.startProcess("billing", assigneeList);<br/> ksession.dispose();<br/> return pid.getId();<br/>}</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><div class="mcePaste" id="_mcePaste" style="position: absolute; top: 0px; left: 0px;"></div></div>
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