[jboss-user] [jBPM] - KSession persistence and problems!

ramkijbpm [https://community.jboss.org/people/ramkijbpm] created the discussion "KSession persistence and problems!" To view the discussion, visit: https://community.jboss.org/message/725342#725342 -------------------------------------------------------------- I get this very exception about namedQueries in Weblogic. Is there any good solution to this below problem? It really is very painful!!! Is JBPM compatible to weblogic server? Caused By: org.hibernate.HibernateException : Errors in named queries: TasksAssignedAsPotentialOwner, UnescalatedDeadlines, TasksAssignedAsTaskStakeholder, TasksAssignedAsRecipient, TasksAssignedAsPotentialOwnerByGroup, TasksAssignedAsExcludedOwner, TasksAssignedAsBusinessAdministrator, SubTasksAssignedAsPotentialOwner, ProcessInstancesWaitingForEvent, TaskByWorkItemId, TasksOwned, TasksAssignedAsPotentialOwnerWithGroups, GetSubTasksByParentTaskId, TasksAssignedAsTaskInitiator  Find my persistence.xml  <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <persistence version="1.0" xsi:schemaLocation=" http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence                                  http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd                                  http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_1_0.xsd http://java.sun.com/xml/ns/persistence/orm_1_0.xsd" xmlns:orm=" http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance http://www.w3.org/2001/XMLSchema-instance" xmlns=" http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence"> <persistence-unit name="com.taskServer.task">   <provider>org.hibernate.ejb.HibernatePersistence</provider>   <mapping-file>META-INF/Taskorm.xml</mapping-file>   <class>org.jbpm.task.Attachment</class>   <class>org.jbpm.task.Content</class>   <class>org.jbpm.task.BooleanExpression</class>   <class>org.jbpm.task.Comment</class>   <class>org.jbpm.task.Deadline</class>   <class>org.jbpm.task.Comment</class>   <class>org.jbpm.task.Deadline</class>   <class>org.jbpm.task.Delegation</class>   <class>org.jbpm.task.Escalation</class>   <class>org.jbpm.task.Group</class>   <class>org.jbpm.task.I18NText</class>   <class>org.jbpm.task.Notification</class>   <class>org.jbpm.task.EmailNotification</class>   <class>org.jbpm.task.EmailNotificationHeader</class>   <class>org.jbpm.task.PeopleAssignments</class>   <class>org.jbpm.task.Reassignment</class>   <class>org.jbpm.task.Status</class>   <class>org.jbpm.task.Task</class>   <class>org.jbpm.task.TaskData</class>   <class>org.jbpm.task.SubTasksStrategy</class>   <class>org.jbpm.task.OnParentAbortAllSubTasksEndStrategy</class>   <class>org.jbpm.task.OnAllSubTasksEndParentEndStrategy</class>   <class>org.jbpm.task.User</class>    <properties>    <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />    <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver" />    <property name="hibernate.connection.url" value="jdbc:oracle:thin:@//xxxx:11102/xxxxx2" />    <property name="hibernate.connection.username" value="xxxx" />    <property name="hibernate.connection.password" value="xxxxxxx" />    <property name="hibernate.connection.autocommit" value="false" />    <property name="hibernate.max_fetch_depth" value="3" />    <property name="hibernate.hbm2ddl.auto" value="validate" />    <property name="hibernate.show_sql" value="true" />    <property name="hibernate.query.startup_check" value="false" />   </properties> </persistence-unit> <persistence-unit name="jbpm.persistence.jpa" transaction-type="JTA">   <provider>org.hibernate.ejb.HibernatePersistence</provider>   <jta-data-source>JTADataSource1</jta-data-source>   <mapping-file>META-INF/JBPMorm.xml</mapping-file>   <class>org.drools.persistence.info.SessionInfo</class>   <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class>   <class>org.drools.persistence.info.WorkItemInfo</class>   <class>org.jbpm.process.audit.ProcessInstanceLog</class>   <class>org.jbpm.process.audit.NodeInstanceLog</class>   <class>org.jbpm.process.audit.VariableInstanceLog</class>    <properties>    <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WeblogicTransactionManagerLookup"/>    <property name="hibernate.transaction.factory_class" value="org.hibernate.transaction.JTATransactionFactory"/>                  <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />    <property name="hibernate.connection.datasource" value="JTADataSource1"/>    <property name="hibernate.hbm2ddl.auto" value="validate" />    <property name="hibernate.show_sql" value="true" />    <property name="hibernate.query.startup_check" value="false" />   </properties> </persistence-unit> </persistence> As well, I have another question. Why would one want to restore the ksession? To get the tasks associated to a user, I can always use the TaskClient, TaskClient client = new TaskClient(new MinaTaskClientConnector("web client", new MinaTaskClientHandler(SystemEventListenerFactory.getSystemEventListener()))); client.getTasksAssignedAsPotentialOwner(userId, LANGUAGE, responseHandler);  Can I always create a new session when the server restarts. I am assuming the only reason we would persist the Ksession is to get the process instance using the sessionId? Is there a way to fetch an existing processInstance with a new ksession. Leads to the question, what is the recommendation as to the lifecycle of a ksession. Can I create new sessions always? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/725342#725342] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]