[jboss-user] [EJB3] - Can't find a persistence unit named

Mitesh pandey [http://community.jboss.org/people/mtshpandey] created the discussion "Can't find a persistence unit named" To view the discussion, visit: http://community.jboss.org/message/619795#619795 -------------------------------------------------------------- Hi All, I am a newbie to ejb3. For my learning , i created a ejb application with a stateless session bean , a pojo class , a persistence.xml file with hibernate as persistence provider , postgresql as DB and jboss server 5.0.0 CR2. The external jar added are ejb3-persistence.jar , hibernate-core and hibernate-entitymanager.jar When i start jboss server , the following error is displayed ERROR [AbstractKernelController] Error installing to Real: name=vfszip:/E:/software%20download/jboss-5.0.0.CR2-jdk6/jboss-5.0.0.CR2/server/default/deploy/Chapter3.jar state=PreReal mode=Manual requiredState=Real org.jboss.deployers.spi.DeploymentException: Error deploying Chapter3.jar: Can't find a persistence unit named 'titan' in AbstractVFSDeploymentContext@25979158{vfszip:/E:/software%20download/jboss-5.0.0.CR2-jdk6/jboss-5.0.0.CR2/server/default/deploy/Chapter3.jar}           at org.jboss.ejb3.deployers.Ejb3Deployer.deploy(Ejb3Deployer.java:209)           at org.jboss.ejb3.deployers.Ejb3Deployer.deploy(Ejb3Deployer.java:108)           at org.jboss.deployers.vfs.spi.deployer.AbstractVFSRealDeployer.internalDeploy(AbstractVFSRealDeployer.java:45)           at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)           at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:169)           at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1285)           at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1003)           at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:944)           at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)           at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598)           at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)           at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062)           at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)           at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)           at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)           at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:627)           at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:541)           at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:265)           at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:143)           at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:409)           at org.jboss.Main.boot(Main.java:209)           at org.jboss.Main$1.run(Main.java:544)           at java.lang.Thread.run(Unknown Source) Caused by: java.lang.IllegalArgumentException: Can't find a persistence unit named 'titan' in AbstractVFSDeploymentContext@25979158{vfszip:/E:/software%20download/jboss-5.0.0.CR2-jdk6/jboss-5.0.0.CR2/server/default/deploy/Chapter3.jar}           at org.jboss.jpa.resolvers.DefaultPersistenceUnitDependencyResolver.resolvePersistenceUnitSupplier(DefaultPersistenceUnitDependencyResolver.java:141)           at org.jboss.ejb3.Ejb3Deployment.resolvePersistenceUnitSupplier(Ejb3Deployment.java:841)           at org.jboss.ejb3.EJBContainer.resolvePersistenceUnitSupplier(EJBContainer.java:1399)           at org.jboss.injection.PersistenceUnitHandler.addPUDependency(PersistenceUnitHandler.java:124)           at org.jboss.injection.PersistenceContextHandler.loadXml(PersistenceContextHandler.java:76)           at org.jboss.ejb3.EJBContainer.processMetadata(EJBContainer.java:570)           at org.jboss.ejb3.Ejb3Deployment.processEJBContainerMetadata(Ejb3Deployment.java:439)           at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:552)           at org.jboss.ejb3.deployers.Ejb3Deployer.deploy(Ejb3Deployer.java:202)           ... 22 more 14:13:32,343 ERROR [ProfileServiceBootstrap] Failed to load profile: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS): *** CONTEXTS IN ERROR: Name -> Error vfszip:/E:/software%20download/jboss-5.0.0.CR2-jdk6/jboss-5.0.0.CR2/server/default/deploy/Chapter3.jar -> java.lang.IllegalArgumentException: Can't find a persistence unit named 'titan' in AbstractVFSDeploymentContext@25979158{vfszip:/E:/software%20download/jboss-5.0.0.CR2-jdk6/jboss-5.0.0.CR2/server/default/deploy/Chapter3.jar} The persistence.xml file is as below <?xml version="1.0" encoding="UTF-8" ?> <persistence            xmlns=" http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence"            xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance http://www.w3.org/2001/XMLSchema-instance"            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"            version="1.0"> <persistence-unit name="titan" transaction-type="JTA">            <provider>org.hibernate.ejb.HibernatePersistence</provider>            <jta-data-source>java:PostgresDS</jta-data-source>            <class>com.domain.Cabin</class>           <properties>                     <property name="hibernate.dialect" value=  "org.hibernate.dialect.PostgreSqlDialect" />                      <property name="hibernate.hbm2ddl.auto" value="update" />                      <property name="hibernate.show_sql" value="true" />                      <property name="hibernate.format_sql" value="false" />                      <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>                      <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/Entity"/>                      <property name="hibernate.connection.username" value="*****"/>                      <property name="hibernate.connection.password" value="*****"/>       </properties> </persistence-unit> </persistence> I have tried other solution like removing the class-path from manifest file but same result is displayed. Any help is appreciated -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/619795#619795] Start a new discussion in EJB3 at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]