When two EARs with EJB 2.0 with the same name are (tried to be) deployed, those EJBs are in conflict in JMX namespace.

Partial stack trace bellow, relevant log lines attached.

StR:

1) Deploy ejbdeployment.ear
2) Deploy ejbdeployment1.ear (a copy of ejbdeployment.ear)
3) Now you get: java.lang.IllegalStateException: jboss.j2ee:module="sessiona.jar",service=EjbModule is already installed.

-----------------

2009-07-31 19:17:56,499 WARN [org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext] (ResourceContainer.invoker.nonDaemon-1) Unable to register deployment mbean jboss.j2ee:module="sessiona.jar",service=EjbModule
javax.management.InstanceAlreadyExistsException: jboss.deployment:id="jboss.j2ee:module="sessiona.jar",service=EjbModule",type=Component already registered.
at org.jboss.mx.server.registry.BasicMBeanRegistry.add(BasicMBeanRegistry.java:756)
at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:233)
at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:138)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:140)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1431)
at java.security.AccessController.doPrivileged(Native Method)
at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1426)
at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:376)
at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.registerMBeans(AbstractDeploymentContext.java:1034)
at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.addComponent(AbstractDeploymentContext.java:725)
at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentUnit.addComponent(AbstractDeploymentUnit.java:251)
at org.jboss.system.deployers.ServiceDeploymentDeployer.addServiceComponent(ServiceDeploymentDeployer.java:62)
at org.jboss.system.deployers.ServiceDeploymentDeployer$ServiceMetaDataVisitor.deploy(ServiceDeploymentDeployer.java:150)
at org.jboss.system.deployers.ServiceDeploymentDeployer$ServiceMetaDataVisitor.deploy(ServiceDeploymentDeployer.java:141)
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployerWithInput.deploy(AbstractRealDeployerWithInput.java:125)
at org.jboss.deployers.spi.deployer.helpers.AbstractComponentDeployer.deployComponents(AbstractComponentDeployer.java:102)
at org.jboss.deployers.spi.deployer.helpers.AbstractComponentDeployer.internalDeploy(AbstractComponentDeployer.java:82)
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:1440)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1158)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1211)
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1099)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1632)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:935)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1083)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:985)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:823)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:782)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at org.jboss.profileservice.management.upload.remoting.AbstractDeployHandler.start(AbstractDeployHandler.java:293)
at org.jboss.profileservice.management.upload.remoting.AbstractDeployHandler.invoke(AbstractDeployHandler.java:207)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
at org.jboss.remoting.transport.local.LocalClientInvoker.invoke(LocalClientInvoker.java:106)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.profileservice.management.client.upload.StreamingDeploymentTarget.invoke(StreamingDeploymentTarget.java:304)
at org.jboss.profileservice.management.client.upload.StreamingDeploymentTarget.start(StreamingDeploymentTarget.java:189)
at org.jboss.profileservice.management.client.upload.DeploymentProgressImpl.start(DeploymentProgressImpl.java:232)
at org.jboss.profileservice.management.client.upload.DeploymentProgressImpl.run(DeploymentProgressImpl.java:89)
at org.rhq.plugins.jbossas5.util.DeploymentUtils.run(DeploymentUtils.java:150)
at org.rhq.plugins.jbossas5.util.DeploymentUtils.deployArchive(DeploymentUtils.java:112)
at org.rhq.plugins.jbossas5.deploy.AbstractDeployer.deploy(AbstractDeployer.java:110)
at org.rhq.plugins.jbossas5.ApplicationServerComponent.createContentBasedResource(ApplicationServerComponent.java:417)
at org.rhq.plugins.jbossas5.ApplicationServerComponent.createResource(ApplicationServerComponent.java:239)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
2009-07-31 19:17:56,503 WARN [org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext] (ResourceContainer.invoker.nonDaemon-1) Unable to register deployment mbean jboss.j2ee:module="sessionb.jar",service=EjbModule
javax.management.InstanceAlreadyExistsException: jboss.deployment:id="jboss.j2ee:module="sessionb.jar",service=EjbModule",type=Component already registered.
at org.jboss.mx.server.registry.BasicMBeanRegistry.add(BasicMBeanRegistry.java:756)
at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:233)
at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:138)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:140)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1431)
at java.security.AccessController.doPrivileged(Native Method)
at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1426)
at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:376)
at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.registerMBeans(AbstractDeploymentContext.java:1034)
at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.addComponent(AbstractDeploymentContext.java:725)
at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentUnit.addComponent(AbstractDeploymentUnit.java:251)
at org.jboss.system.deployers.ServiceDeploymentDeployer.addServiceComponent(ServiceDeploymentDeployer.java:62)
at org.jboss.system.deployers.ServiceDeploymentDeployer$ServiceMetaDataVisitor.deploy(ServiceDeploymentDeployer.java:150)
at org.jboss.system.deployers.ServiceDeploymentDeployer$ServiceMetaDataVisitor.deploy(ServiceDeploymentDeployer.java:141)
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployerWithInput.deploy(AbstractRealDeployerWithInput.java:125)
at org.jboss.deployers.spi.deployer.helpers.AbstractComponentDeployer.deployComponents(AbstractComponentDeployer.java:102)
at org.jboss.deployers.spi.deployer.helpers.AbstractComponentDeployer.internalDeploy(AbstractComponentDeployer.java:82)
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:1440)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1158)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1211)
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1099)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1632)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:935)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1083)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:985)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:823)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:782)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at org.jboss.profileservice.management.upload.remoting.AbstractDeployHandler.start(AbstractDeployHandler.java:293)
at org.jboss.profileservice.management.upload.remoting.AbstractDeployHandler.invoke(AbstractDeployHandler.java:207)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
at org.jboss.remoting.transport.local.LocalClientInvoker.invoke(LocalClientInvoker.java:106)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.profileservice.management.client.upload.StreamingDeploymentTarget.invoke(StreamingDeploymentTarget.java:304)
at org.jboss.profileservice.management.client.upload.StreamingDeploymentTarget.start(StreamingDeploymentTarget.java:189)
at org.jboss.profileservice.management.client.upload.DeploymentProgressImpl.start(DeploymentProgressImpl.java:232)
at org.jboss.profileservice.management.client.upload.DeploymentProgressImpl.run(DeploymentProgressImpl.java:89)
at org.rhq.plugins.jbossas5.util.DeploymentUtils.run(DeploymentUtils.java:150)
at org.rhq.plugins.jbossas5.util.DeploymentUtils.deployArchive(DeploymentUtils.java:112)
at org.rhq.plugins.jbossas5.deploy.AbstractDeployer.deploy(AbstractDeployer.java:110)
at org.rhq.plugins.jbossas5.ApplicationServerComponent.createContentBasedResource(ApplicationServerComponent.java:417)
at org.rhq.plugins.jbossas5.ApplicationServerComponent.createResource(ApplicationServerComponent.java:239)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
2009-07-31 19:17:56,541 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (ResourceContainer.invoker.nonDaemon-1) Error installing to Real: name=vfszip:/home/brq/ozizka/JoprEmbedded/JBPAPP_5_0/build/output/jboss-5.0.0.Beta/server/default/deploy/eardeployment1.ear/ state=PreReal mode=Manual requiredState=Real
org.jboss.deployers.spi.DeploymentException: Error deploying: jboss.j2ee:service=EjbModule,module="sessiona.jar"
at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49)
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:118)
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)
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:1440)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1158)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1179)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1211)
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1099)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1632)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:935)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1083)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:985)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:823)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:782)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at org.jboss.profileservice.management.upload.remoting.AbstractDeployHandler.start(AbstractDeployHandler.java:293)
at org.jboss.profileservice.management.upload.remoting.AbstractDeployHandler.invoke(AbstractDeployHandler.java:207)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
at org.jboss.remoting.transport.local.LocalClientInvoker.invoke(LocalClientInvoker.java:106)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.profileservice.management.client.upload.StreamingDeploymentTarget.invoke(StreamingDeploymentTarget.java:304)
at org.jboss.profileservice.management.client.upload.StreamingDeploymentTarget.start(StreamingDeploymentTarget.java:189)
at org.jboss.profileservice.management.client.upload.DeploymentProgressImpl.start(DeploymentProgressImpl.java:232)
at org.jboss.profileservice.management.client.upload.DeploymentProgressImpl.run(DeploymentProgressImpl.java:89)
at org.rhq.plugins.jbossas5.util.DeploymentUtils.run(DeploymentUtils.java:150)
at org.rhq.plugins.jbossas5.util.DeploymentUtils.deployArchive(DeploymentUtils.java:112)
at org.rhq.plugins.jbossas5.deploy.AbstractDeployer.deploy(AbstractDeployer.java:110)
at org.rhq.plugins.jbossas5.ApplicationServerComponent.createContentBasedResource(ApplicationServerComponent.java:417)
at org.rhq.plugins.jbossas5.ApplicationServerComponent.createResource(ApplicationServerComponent.java:239)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IllegalStateException: jboss.j2ee:module="sessiona.jar",service=EjbModule is already installed.
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:716)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)
at org.jboss.system.ServiceController.doInstall(ServiceController.java:670)
at org.jboss.system.ServiceController.install(ServiceController.java:273)
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:90)
... 44 more