I start jboss, no errors. I open up jBPM. I start the websale example process. I enter my order data. I click OK. Then when it hits the timer associated with the evaluate order task node I get the following exception. 2009-03-11 12:56:29,037 DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCFindByPrimaryKeyQuery.TimerEntityBean#findByPrimaryKey] Executing SQL: SELECT t0_TimerEntityBean.ID_ FROM JBPM_JOB t0_TimerEntityBean WHERE t0_TimerEntityBean.ID_=? 2009-03-11 12:56:29,037 WARN [com.arjuna.ats.jta.logging.loggerI18N] [com.arjuna.ats.internal.jta.transaction.arjunacore.lastResource.disallow] [com.arjuna.ats.internal.jta.transaction.arjunacore.lastResource.disallow] Adding multiple last resources is disallowed. Current resource is org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@672bb3 2009-03-11 12:56:29,067 DEBUG [org.jboss.util.NestedThrowable] org.jboss.util.NestedThrowable.parentTraceEnabled=true 2009-03-11 12:56:29,067 DEBUG [org.jboss.util.NestedThrowable] org.jboss.util.NestedThrowable.nestedTraceEnabled=false 2009-03-11 12:56:29,067 DEBUG [org.jboss.util.NestedThrowable] org.jboss.util.NestedThrowable.detectDuplicateNesting=true 2009-03-11 12:56:29,067 ERROR [org.jboss.ejb.plugins.cmp.jdbc.JDBCFindByPrimaryKeyQuery.TimerEntityBean#findByPrimaryKey] Find failed org.jboss.util.NestedSQLException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: a226452:ab8:49b7ec92:5f status: ActionStatus.ABORT_ONLY >); - nested throwable: (org.jboss.resource.JBossResourceException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: a226452:ab8:49b7ec92:5f status: ActionStatus.ABORT_ONLY >)) at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:95) at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(JDBCAbstractQueryCommand.java:225) at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractQueryCommand.execute(JDBCAbstractQueryCommand.java:144) at org.jboss.ejb.plugins.cmp.jdbc.JDBCFindByPrimaryKeyQuery.execute(JDBCFindByPrimaryKeyQuery.java:155) at org.jboss.ejb.plugins.cmp.jdbc.JDBCFindEntityCommand.execute(JDBCFindEntityCommand.java:61) ... lots more ... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217132#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...