java lang LinkageError loader constraint violation
11:57:04,473 WARN [org.jboss.detailed.classloader.ClassLoaderManager] Unexpected error during load of:org.xml.sax.InputSource: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) previously initiated
11:57:04,473 WARN [org.jboss.detailed.classloader.ClassLoaderManager] Unexpected error during load of:org.xml.sax.InputSource: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) previously initiated loading for a different type with name "org/xml/sax/InputSource" at java.lang.ClassLoader.defineClass1(Native Method) [:1.6.0_29] at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) [:1.6.0_29] at java.lang.ClassLoader.defineClass(ClassLoader.java:615) [:1.6.0_29] at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:52) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:650) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:609) [jboss-classloader.jar:2.2.1.GA] at java.security.AccessController.doPrivileged(Native Method) [:1.6.0_29] at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:608) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:585) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:156) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.filter.FilteredDelegateLoader.doLoadClass(FilteredDelegateLoader.java:141) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:132) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:461) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:262) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:161) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:280) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1172) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:886) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoader.doLoadClass(BaseClassLoader.java:505) [jboss-classloader.jar:2.2.1.GA] at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:450) [jboss-classloader.jar:2.2.1.GA] at java.lang.ClassLoader.loadClass(ClassLoader.java:247) [:1.6.0_29] at java.lang.Class.getDeclaredMethods0(Native Method) [:1.6.0_29] at java.lang.Class.privateGetDeclaredMethods(Class.java:2427) [:1.6.0_29] at java.lang.Class.getDeclaredMethods(Class.java:1791) [:1.6.0_29] at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.getDeclaredMethods(IntrospectionTypeInfoFactoryImpl.java:610) [jboss-reflect.jar:2.2.1.SP1] at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl$2.run(IntrospectionTypeInfoFactoryImpl.java:198) [jboss-reflect.jar:2.2.1.SP1] at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl$2.run(IntrospectionTypeInfoFactoryImpl.java:194) [jboss-reflect.jar:2.2.1.SP1] at java.security.AccessController.doPrivileged(Native Method) [:1.6.0_29] at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.getMethods(IntrospectionTypeInfoFactoryImpl.java:193) [jboss-reflect.jar:2.2.1.SP1] at org.jboss.reflect.plugins.ClassInfoImpl.getDeclaredMethods(ClassInfoImpl.java:416) [jboss-reflect.jar:2.2.1.SP1] at org.jboss.scanning.plugins.visitor.ClassHierarchyResourceVisitor.handleClass(ClassHierarchyResourceVisitor.java:80) [:1.0.0.GA] at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.doVisit(ReflectResourceVisitor.java:108) [:1.0.0.GA] at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.visit(ReflectResourceVisitor.java:86) [:1.0.0.GA] at org.jboss.scanning.annotations.plugins.AnnotationsScanningPlugin.visit(AnnotationsScanningPlugin.java:89) [:1.0.0.GA] at org.jboss.scanning.spi.helpers.ScanningPluginWrapper.visit(ScanningPluginWrapper.java:112) [:1.0.0.GA] at org.jboss.classloading.plugins.visitor.FederatedResourceVisitor.visit(FederatedResourceVisitor.java:101) [jboss-classloading.jar:2.2.1.GA] at org.jboss.classloading.plugins.vfs.VFSResourceVisitor.visit(VFSResourceVisitor.java:264) [jboss-classloading-vfs.jar:2.2.1.GA] at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.1.GA] at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:411) [jboss-vfs.jar:3.0.1.GA] at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:411) [jboss-vfs.jar:3.0.1.GA] at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:411) [jboss-vfs.jar:3.0.1.GA] at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:411) [jboss-vfs.jar:3.0.1.GA] at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:397) [jboss-vfs.jar:3.0.1.GA] at org.jboss.classloading.plugins.vfs.VFSResourceVisitor.visit(VFSResourceVisitor.java:102) [jboss-classloading-vfs.jar:2.2.1.GA] at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.visit(VFSDeploymentClassLoaderPolicyModule.java:181) [:2.2.2.GA] at org.jboss.scanning.plugins.DeploymentUnitScanner.scan(DeploymentUnitScanner.java:111) [:1.0.0.GA] at org.jboss.scanning.spi.helpers.UrlScanner.scan(UrlScanner.java:96) [:1.0.0.GA] at org.jboss.scanning.deployers.ScanningDeployer.deploy(ScanningDeployer.java:95) [:1.0.0.GA] at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179) [:2.2.2.GA] at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1832) [:2.2.2.GA] at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1550) [:2.2.2.GA] at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1491) [:2.2.2.GA] at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.deployers.plugins.deployers.DeployersImpl.change(DeployersImpl.java:1983) [:2.2.2.GA] at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:1076) [:2.2.2.GA] at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:679) [:2.2.2.GA] at org.jboss.system.server.profileservice.deployers.MainDeployerPlugin.process(MainDeployerPlugin.java:106) [:6.1.0.Final] at org.jboss.profileservice.dependency.ProfileControllerContext$DelegateDeployer.process(ProfileControllerContext.java:143) [:0.2.2] at org.jboss.profileservice.dependency.ProfileDeployAction.deploy(ProfileDeployAction.java:151) [:0.2.2] at org.jboss.profileservice.dependency.ProfileDeployAction.installActionInternal(ProfileDeployAction.java:94) [:0.2.2] at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54) [jboss-kernel.jar:2.2.0.SP2] at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42) [jboss-kernel.jar:2.2.0.SP2] at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.SP2] at org.jboss.profileservice.dependency.ProfileActivationWrapper$BasicProfileActivation.start(ProfileActivationWrapper.java:190) [:0.2.2] at org.jboss.profileservice.dependency.ProfileActivationWrapper.start(ProfileActivationWrapper.java:87) [:0.2.2] at org.jboss.profileservice.dependency.ProfileActivationService.activateProfile(ProfileActivationService.java:215) [:0.2.2] at org.jboss.profileservice.dependency.ProfileActivationService.activate(ProfileActivationService.java:159) [:0.2.2] at org.jboss.profileservice.AbstractProfileService.activateProfile(AbstractProfileService.java:154) [:0.2.2] at org.jboss.system.tools.ProfileServiceToolsFacade.addURI(ProfileServiceToolsFacade.java:233) [:6.1.0.Final] at org.jboss.system.tools.LegacyDeploymentScannerAdapter.addURL(LegacyDeploymentScannerAdapter.java:140) [:6.1.0.Final] at org.jboss.system.tools.DeploymentScanner.addURL(DeploymentScanner.java:91) [:6.1.0.Final] at org.jboss.system.tools.DeploymentScanner.addURL(DeploymentScanner.java:83) [:6.1.0.Final] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_29] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_29] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_29] at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_29] at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) [:6.0.0.GA] at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) [:6.0.0.GA] at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) [:6.0.0.GA] at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:271) [:6.0.0.GA] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:670) [:6.0.0.GA] at org.jboss.system.server.jmx.MBeanServerWrapper.invoke(MBeanServerWrapper.java:138) [:6.1.0.Final] at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1427) [:1.6.0_29] at javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72) [:1.6.0_29] at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1265) [:1.6.0_29] at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1360) [:1.6.0_29] at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:788) [:1.6.0_29] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_29] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_29] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_29] at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_29] at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:303) [:1.6.0_29] at sun.rmi.transport.Transport$1.run(Transport.java:159) [:1.6.0_29] at java.security.AccessController.doPrivileged(Native Method) [:1.6.0_29] at sun.rmi.transport.Transport.serviceCall(Transport.java:155) [:1.6.0_29] at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) [:1.6.0_29] at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) [:1.6.0_29] at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) [:1.6.0_29] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_29] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_29] at java.lang.Thread.run(Thread.java:662) [:1.6.0_29]
Solution: If you are trying to integrate JBoss application server (In my case JBoss version 6.1.0) and webserviceclient.jar is available in your class path then you will see above exception. Please remove webserviceclient.jar form your project class path to fix the issue. It seems webserviceclient.jar is not compatible with JBoss 6.1.0.
