Hi,
I'm trying to use JBoss 4.0.5.GA on an AIX server with IBM JRE 1.4.2
I get this exceptions at startup:


| 2007-03-27 11:15:19,125 ERROR [org.jboss.xb.binding.Util] Failed to create schema loader.
| java.lang.ClassCastException: org.apache.xerces.dom.DOMXSImplementationSourceImpl
|  at org.w3c.dom.bootstrap.DOMImplementationRegistry.newInstance(Unknown Source)
|  at org.jboss.xb.binding.Util$5.run(Util.java:512)
|  at java.security.AccessController.doPrivileged1(Native Method)
|  at java.security.AccessController.doPrivileged (AccessController.java(Compiled Code))
|  at org.jboss.xb.binding.Util.getXSImplementation(Util.java:488)
|  at org.jboss.xb.binding.Util.loadSchema(Util.java:387)
|  at org.jboss.Main$1.run(Main.java:490)
| ...
|  at java.lang.Thread.run (Thread.java:570)
| 2007-03-27 11:15:19,139 INFO [org.jboss.system.ServiceConfigurator] Problem configuring service jboss.web:service=WebServer
| org.jboss.xb.binding.JBossXBException: Failed to parse source: Failed to create schema loader: org.apache.xerces.dom.DOMXSImplementationSourceImpl
|  at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:170)
|  at org.jboss.xb.binding.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:140)
|  at org.jboss.system.ServiceConfigurator.parseJbxbSerialData (ServiceConfigurator.java:643)
|  at org.jboss.system.ServiceConfigurator.configure (ServiceConfigurator.java:327)
|  at org.jboss.system.ServiceConfigurator.internalInstall (ServiceConfigurator.java:460)
|  at org.jboss.system.ServiceConfigurator.install (ServiceConfigurator.java:171)
|  at org.jboss.system.ServiceController.install (ServiceController.java:226)
| ...
|   at org.jboss.Main$1.run(Main.java:490)
|  at java.lang.Thread.run (Thread.java:570)
| Caused by: java.lang.IllegalStateException: Failed to create schema loader: org.apache.xerces.dom.DOMXSImplementationSourceImpl
|  at org.jboss.xb.binding.Util$5.run(Util.java:518)
|  at java.security.AccessController.doPrivileged1(Native Method)
|  at java.security.AccessController.doPrivileged (AccessController.java(Compiled Code))
|  at org.jboss.xb.binding.Util.getXSImplementation(Util.java:488)
|  at org.jboss.xb.binding.Util.loadSchema(Util.java:387)
|  at org.jboss.xb.binding.sunday.unmarshalling.XsdBinder.bind(XsdBinder.java:166)
|  at org.jboss.xb.binding.sunday.unmarshalling.XsdBinder.bind(XsdBinder.java:137)
|  at org.jboss.xb.binding.sunday.unmarshalling.DefaultSchemaResolver.resolve(DefaultSchemaResolver.java:248)
|  at org.jboss.xb.binding.sunday.unmarshalling.SundayContentHandler.startElement(SundayContentHandler.java:162)
|  at org.jboss.xb.binding.parser.sax.SaxJBossXBParser$DelegatingContentHandler.startElement(SaxJBossXBParser.java:301)
|  at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
|  at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
|  at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source)
|  at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
|  at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
|  at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
|  at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
|  at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
|  at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
|  at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:166)
|  ... 89 more
|

No problems with:
- JBoss 3.2.1 with same AIX server and same JRE
- JBoss 4.0.5 GA on Windows XP with JDK 1.4.2

I noticed that the IBM JRE 1.4 has a file <JAVA INSTALLATION DIR>/jre/lib/xml.jar and I think that it could be the reason of the ClassCastException, with a clash between that jar file and JBOSS/lib/endorsed/xercesImpl.jar

Am I correct? How can I solve this problem?

Thanks in advance,
Andrea



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