Error 500--Internal Server Error java.lang.NoSuchMethodError: org.apache.commons.lang.StringUtils.replaceEach(Ljava/lang/String;[Ljava/lang/String;[Ljava/lang/String;)Ljava/lang/String; at org.xwiki.model.internal.reference.DefaultStringEntityReferenceSerializer.serializeEntityReference(DefaultStringEntityReferenceSerializer.java:90) at org.xwiki.model.internal.reference.LocalStringEntityReferenceSerializer.serializeEntityReference(LocalStringEntityReferenceSerializer.java:50) at org.xwiki.model.internal.reference.DefaultStringEntityReferenceSerializer.serialize(DefaultStringEntityReferenceSerializer.java:77) at org.xwiki.model.internal.reference.DefaultStringEntityReferenceSerializer.serialize(DefaultStringEntityReferenceSerializer.java:41) at com.xpn.xwiki.doc.XWikiDocument.getFullName(XWikiDocument.java:922) at com.xpn.xwiki.store.XWikiCacheStore.getKey(XWikiCacheStore.java:241) at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:262) at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1408) at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1451) at com.xpn.xwiki.XWiki.getXWikiPreference(XWiki.java:2193) at com.xpn.xwiki.XWiki.getXWikiPreference(XWiki.java:2225) at com.xpn.xwiki.render.XWikiMacrosMappingRenderer.loadPreferences(XWikiMacrosMappingRenderer.java:118) at com.xpn.xwiki.render.XWikiMacrosMappingRenderer.(XWikiMacrosMappingRenderer.java:85) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.(DefaultXWikiRenderingEngine.java:61) at com.xpn.xwiki.XWiki.resetRenderingEngine(XWiki.java:1087) at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:783) at com.xpn.xwiki.XWiki.(XWiki.java:717) at com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:354) at com.xpn.xwiki.XWiki.getXWiki(XWiki.java:435) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:135) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:115) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:129) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.xpn.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:152) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.xpn.xwiki.web.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:304) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:112) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3588) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2200) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2106) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1428) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201) at weblogic.work.ExecuteThread.run(ExecuteThread.java:173) I've deployed the xwiki-enterprise-web-2.2.5.war in Oracle WebLogic Server, and configured hibernate.cfg.xml for an Oracle database Before trying with WebLogic, I tried whith OAS 10.2 but could not solve the problem "oracle.oc4j.admin.internal.DeployerException: Unknown assembly root-tag attribute: xmlns. deploy failed"... Please advice Thanks in advance Alfonso