Created attachment 794253 [details] server.log Starting many process with human tasks via JMS ends in: Could not commit session: java.lang.NullPointerException. 14:16:13,966 WARN [org.drools.persistence.SingleSessionCommandService] (Thread-7 (HornetQ-client-global-threads-1162166649)) Could not commit session: java.lang.NullPointerException To reproduce: 1.) Download BPMS 6 ER2 and merge it with JBoss EAP 6.1. 2.) Setup user guest, with password guest. Hint: guest=b5d048a237bfd2874b6928e1f37ee15e guest=kie-user,ADMIN 3.) Configure both business-central.war and dashbuilder.war to use MySQL database. Add mysql-connector-java-5.1.26-bin.jar and mysql-ds.xml to ${EAP_DIR}/standalone/deployments to deploy a MySQL datasource. Change DS name to java:jboss/datasources/mysqlDS and hibernate dialect to org.hibernate.dialect.MySQL5InnoDBDialect in dashbuilder.war/WEB-INF/jboss-web.xml and business-central.war/WEB-INF/classes/META-INF/persistence.xml. 4.) Add role kie-user to JMS configuration in standalone.xml, subsystem messaging -> security settings to enable guest user to send messages to JMS queues. 5.) Run it with cd ${EAP_DIR}/bin ./standalone.sh 6.) Install PerfCake 1.0-SNAPSHOT git clone https://github.com/PerfCake/PerfCake.git cd PerfCake git checkout devel mvn clean install -DskipTests 7.) Run perf scenario, just two iterations are enough to break: git clone git://git.app.eng.bos.redhat.com/jbossqe-process-flood.git cd jbossqe-process-flood/bpms-6.x ./execute_scenario.sh -Dscenario=HumanTask_startProcess_JMS My environment: BPMS 6 ER2 JBoss EAP 6.1 MySQL 5.5.32 mysql-connector-java-5.1.26-bin.jar driver
Created attachment 794254 [details] mysql-ds.xml Setup your MySQL database according to this EAP data source configuration file.
This seems to be a duplicate of 999149: could you verify whether or not this is the case? In particular, see the server.log attached to BZ 999149.
Verified in BPMS 6 ER4. Marco: Yes, this was probably a duplicate.