No persistence unit named '***' is available in scope BL-1.0.0-SNAPSHOT.jar.

[Amir Keibi]

Hi all,

Environment:
An EJB 3.0 module being deployed to WebLogic 11g. The persistence code is currently included in the EJB's JAR.

Problem:
Upon deployment of EJB to WebLogic, I receive the following error:

Exception preparing module: EJBModule(BL-1.0.0-SNAPSHOT) Unable to deploy EJB: PlaceOrderBean from BL-1.0.0-SNAPSHOT.jar: No persistence unit named 'orderingMainPU' is available in scope BL-1.0.0-SNAPSHOT.jar. Available persistence units: []

Persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
	version="2.0">
	<persistence-unit name="orderingMainPU" transaction-type="RESOURCE_LOCAL">
		<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
		<class>com.test.persistence.Stock</class>
		<properties>
			<property name="eclipselink.target-database" value="Oracle" />
			<property name="eclipselink.logging.level" value="INFO" />
			<property name="javax.persistence.jdbc.driver" value="oracle.jdbc.OracleDriver" />
			<property name="javax.persistence.jdbc.url" value="jdbc:oracle:thin:@1TP6BS1.test.bc.ca:1521:XE" />
			<property name="javax.persistence.jdbc.user" value="usr" />
			<property name="javax.persistence.jdbc.password" value="pass" />
		</properties>
	</persistence-unit>
</persistence>

JAR file's structure:

BL-1.0.0-SNAPSHOT.jar
|
-----META-INF
| |
| ------- Persistence.xml
| ------- MANIFEST.MF
|
.....


WebLogic's stack trace:
Caused By: java.lang.IllegalArgumentException: No persistence unit named 'orderingMainPU' is available in scope BL-1.0.0-SNAPSHOT.jar. Available persistence units: []
at weblogic.deployment.ModulePersistenceUnitRegistry.getPersistenceUnit(ModulePersistenceUnitRegistry.java:132)
at weblogic.deployment.BasePersistenceContextProxyImpl.<init>(BasePersistenceContextProxyImpl.java:38)
at weblogic.deployment.TransactionalEntityManagerProxyImpl.<init>(TransactionalEntityManagerProxyImpl.java:35)
at weblogic.deployment.BaseEnvironmentBuilder.createPersistenceContextProxy(BaseEnvironmentBuilder.java:974)
at weblogic.deployment.BaseEnvironmentBuilder.addPersistenceContextRefs(BaseEnvironmentBuilder.java:855)
at weblogic.ejb.container.deployer.EJBDeployer.setupEnvironmentContext(EJBDeployer.java:275)
at weblogic.ejb.container.deployer.EJBDeployer.setupEnvironmentFor(EJBDeployer.java:1114)
at weblogic.ejb.container.deployer.EJBDeployer.setupBeanInfos(EJBDeployer.java:1008)
at weblogic.ejb.container.deployer.EJBDeployer.prepare(EJBDeployer.java:1271)
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:440)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:199)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:507)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:149)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:45)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:1221)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:41)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:367)
at weblogic.application.internal.SingleModuleDeployment.prepare(SingleModuleDeployment.java:43)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:154)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:60)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:207)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:98)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:217)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:747)
at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1216)
at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:250)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:159)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:171)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer.java:13)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$1.run(DeploymentReceiverCallbackDeliverer.java:46)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:528)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)


Any help is greatly appreciated.

[Prabaharan Gopalan]

The straightforward thing that comes to my mind is that the application is not able to find the persistence.xml in the classpath. Are you sure it is in the classpath?

[Amir Keibi]

Not sure what you mean. The persistence.xml resides within the EJB's JAR file's META-INF directory.

[Amir Keibi]

For the sake of others who are searching for same issue:

Persistence.xml should've been persistence.xml (case sensitive)

Also, I realized I made a mistake in versioning of the XML namespace of the persistence.xml file. Since I copied the XML file from another project which is deployed to Glassfish 3 (which uses JDK7 and consequently version 2.0 of JPA spi) it conflicts with my EJB's dependency to version 1.0 of JPA spi.

So instead of

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
	version="2.0">

I now have

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
    version="1.0">

[Prabaharan Gopalan]

(case sensitive)

it's always the small ones that are nasty. And thanks for sharing the thing about the version. Appreciate it.