Hi all 
 When im tryng to give Fetch type = EAGER Jboss throwing an error .Here is my 
code 
@ManyToMany(cascade=CascadeType.ALL,fetch=FetchType.EAGER) 
and here is the Error 
 Problem starting service persistence.units:jar=hisejb.jar,unitName=isehisem
org.hibernate.HibernateException: cannot simultaneously fetch multiple bags
        at org.hibernate.loader.BasicLoader.postInstantiate(BasicLoader.java:66)
        at org.hibernate.loader.entity.EntityLoader.(EntityLoader.java:75)
        at org.hibernate.loader.entity.EntityLoader.(EntityLoader.java:43)
        at org.hibernate.loader.entity.EntityLoader.(EntityLoader.java:33)
        at 
org.hibernate.loader.entity.BatchingEntityLoader.createBatchingEntityLoader(BatchingEntityLoader.java:103)
        at 
org.hibernate.persister.entity.AbstractEntityPersister.createEntityLoader(AbstractEntityPersister.java:1666)
        at 
org.hibernate.persister.entity.AbstractEntityPersister.createEntityLoader(AbstractEntityPersister.java:1670)
        at 
org.hibernate.persister.entity.AbstractEntityPersister.createLoaders(AbstractEntityPersister.java:2767)
        at 
org.hibernate.persister.entity.AbstractEntityPersister.postInstantiate(AbstractEntityPersister.java:2760)
        at 
org.hibernate.persister.entity.SingleTableEntityPersister.postInstantiate(SingleTableEntityPersister.java:667)
        at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:287)
        at 
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1213)
        at 
org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:631)
        at 
org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:760)
        at 
org.hibernate.ejb.Ejb3Configuration.createContainerEntityManagerFactory(Ejb3Configuration.java:350)
        at 
org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:119)
        at 
org.jboss.ejb3.entity.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:264)
        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.jboss.ejb3.ServiceDelegateWrapper.startService(ServiceDelegateWrapper.java:99)
        at 
org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
        at 
org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
        at sun.reflect.GeneratedMethodAccessor3.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:155)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
        at 
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at 
org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
        at $Proxy0.start(Unknown Source)
        at org.jboss.system.ServiceController.start(ServiceController.java:417)
        at sun.reflect.GeneratedMethodAccessor6.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:155)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
        at 
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
        at $Proxy168.start(Unknown Source)
        at 
org.jboss.ejb3.JmxKernelAbstraction.install(JmxKernelAbstraction.java:82)
        at 
org.jboss.ejb3.Ejb3Deployment.startPersistenceUnits(Ejb3Deployment.java:626)
        at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:475)
        at org.jboss.ejb3.Ejb3Module.startService(Ejb3Module.java:139)
        at 
org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
        at 
org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
        at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at 
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
        at 
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at 
org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
        at $Proxy0.start(Unknown Source)
        at org.jboss.system.ServiceController.start(ServiceController.java:417)
        at sun.reflect.GeneratedMethodAccessor6.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:155)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
        at 
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
        at $Proxy34.start(Unknown Source)
        at org.jboss.ejb3.EJB3Deployer.start(EJB3Deployer.java:449)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at 
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
        at 
org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
        at 
org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
        at 
org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
        at 
org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
        at 
org.jboss.ws.server.WebServiceDeployer.start(WebServiceDeployer.java:117)
        at 
org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
        at 
org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
        at 
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
        at $Proxy35.start(Unknown Source)
        at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1007)
        at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:808)
        at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:771)
        at sun.reflect.GeneratedMethodAccessor14.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:155)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
        at 
org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
        at 
org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
        at 
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
        at $Proxy6.deploy(Unknown Source)
        at 
org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
        at 
org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:610)
        at 
org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
        at 
org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
        at 
org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanne

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