[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] Probem with the same name for persistence unit with separate wars in JBOSS 5.1.0

Hi, I have a problem with 2 wars (a.war and b.war), which have the persistence jar with persistence.xml. The persistence xml for both jars has persistence unit with same name <persistence-unit name=/"default"… /(The Datasource for each persistence unit aren’t the same). But if I deploy on the JBOSS AS 5.1.0 the both war, only the first war deploy on the second I have a problem (Exception): 2010-10-01 09:51:26,477 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (main) Error installing to Real: name=vfszip:/usr/local/jboss-5.1.0.GA-jdk5/server/rb_std_dev/deploy/b.war / state=PreReal mode=Manual requiredState=Real org.jboss.deployers.spi.DeploymentException: Error deploying: persistence.unit:unitName=#default at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49) at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:125) at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:51) at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62) at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50) at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171) at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439) at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157) at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178) at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098) at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348) In SPEC for EJB 3.0 I have read: “*6.2.2 Persistence Unit Scope* … When referencing a persistence unit using the unitName annotation element or persistence- unit-name deployment descriptor element, the visibility scope of the persistence unit is determined by its point of definition. A persistence unit that is defined at the level of an EJB-JAR,WAR, or application client jar is scoped to that EJB-JAR, WAR, or application jar respectively and is visible to the components defined in that jar or war…” What is wrong?