[jboss-user] [Installation, Configuration & DEPLOYMENT] - linkage error for SAXParserImpl

[saikatsakura]

Hi,

We are using JBOSS 5.0CR1 and JDK 1.6. We have been trying to deploy an ear in the appserver, however, are hindered by a very nasty LinkageError issue. We have set the classloader isolation levels to "true" in the ear-deployer-bean.xml to true. The stacktrace for the error is - 

java.lang.LinkageError: loader constraint violation: when resolving overridden method "org.apache.xerces.jaxp.SAXParserImpl.parse(Lorg/xml/sax/InputSource;Lorg/xml/sax/helpers/DefaultHandler;)V" the class loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) of the current class, org/apache/xerces/jaxp/SAXParserImpl, and its superclass loader (instance of ), have different Class objects for the type org/xml/sax/helpers/DefaultHandler used in the signature
	at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
	at org.apache.tomcat.util.digester.Digester.getParser(Digester.java:704)
	at org.apache.tomcat.util.digester.Digester.getXMLReader(Digester.java:978)
	at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1643)
	at org.apache.catalina.startup.TldConfig.tldScanStream(TldConfig.java:518)
	at org.apache.catalina.startup.TldConfig.tldScanTld(TldConfig.java:555)
	at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:295)
	at org.apache.catalina.core.StandardContext.processTlds(StandardContext.java:4503)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4262)
	at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:346)
	at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:139)
	at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:431)
	at org.jboss.web.deployers.WebModule.startModule(WebModule.java:112)
	at org.jboss.web.deployers.WebModule.start(WebModule.java:90)
	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:597)
	at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
	at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
	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:668)
	at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
	at $Proxy35.start(Unknown Source)
	at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
	at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
	at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
	at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
	at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
	at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:271)
	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1392)
	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:784)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:912)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:834)
	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:624)
	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:442)
	at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:88)
	at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.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:174)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:970)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:991)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:911)
	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1392)
	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:784)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:912)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:834)
	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:672)
	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:455)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:594)
	at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:541)
	at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:257)
	at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:135)
	at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:409)
	at org.jboss.Main.boot(Main.java:209)
	at org.jboss.Main$1.run(Main.java:544)
	at java.lang.Thread.run(Thread.java:619)

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