Hello, I have a couple of suggestions regarding the handling of the *page.xml files. Seam-Gen adds an XML doctype to every instance of *page.xml: <!DOCTYPE page PUBLIC | "-//JBoss/Seam Pages Configuration DTD 1.2//EN" | "http://jboss.com/products/seam/pages-1.2.dtd"> | | <page> | </page> And in all of my apps I have dutifully mimicked this across all of my pages. Now, I noticed that this has been upgraded in the forthcoming 1.3 version in CVS to: <!DOCTYPE page PUBLIC | "-//JBoss/Seam Pages Configuration DTD 1.3//EN" | "http://jboss.com/products/seam/pages-1.3.dtd"> The DTD for 1.3 is present in the jboss-seam.jar but 1.2/1.1/etc are not. I also checked an older application that was upgraded from 1.1 to 1.2, and I saw there was a similar story there (trying to access DTD for 1.1, not finding it and resoving via the web). When parsing the pages.xml when the pages-1.x.dtd is not present in the Seam jar, org.jboss.seam.core.Pages looks like it's downloading the DTD on every page invocation. If I disable my internet connection (all my resources are on one machine) then I get the following exception: 16:33:10,527 ERROR [SeamPhaseListener] uncaught exception | java.lang.RuntimeException: org.dom4j.DocumentException: jboss.com Nested exception: jboss.com | at org.jboss.seam.core.Pages.getDocumentRoot(Pages.java:877) | at org.jboss.seam.core.Pages.parse(Pages.java:835) | at org.jboss.seam.core.Pages.initialize(Pages.java:108) | 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.seam.util.Reflections.invoke(Reflections.java:21) | at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:124) | at org.jboss.seam.Component.callComponentMethod(Component.java:1838) | at org.jboss.seam.Component.callCreateMethod(Component.java:1761) | at org.jboss.seam.Component.newInstance(Component.java:1750) | at org.jboss.seam.Component.getInstance(Component.java:1647) | at org.jboss.seam.Component.getInstance(Component.java:1626) | at org.jboss.seam.Component.getInstance(Component.java:1603) | at org.jboss.seam.Component.getInstance(Component.java:1598) | at org.jboss.seam.core.Pages.instance(Pages.java:519) | at org.jboss.seam.core.Manager.restoreConversation(Manager.java:439) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.afterRestoreView(AbstractSeamPhaseListener.java:67) | at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:90) | at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:280) | at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) | at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:60) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55) | at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:47) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55) | at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:81) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:293) | at org.jboss.seam.web.AbstractAjax4jsfFilter.doFilter(AbstractAjax4jsfFilter.java:35) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55) | at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:64) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55) | at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:126) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) | at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) | at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) | at java.lang.Thread.run(Thread.java:619) | Caused by: org.dom4j.DocumentException: jboss.com Nested exception: jboss.com | at org.dom4j.io.SAXReader.read(SAXReader.java:484) | at org.dom4j.io.SAXReader.read(SAXReader.java:343) | at org.jboss.seam.util.XML.getRootElement(XML.java:16) | at org.jboss.seam.core.Pages.getDocumentRoot(Pages.java:873) | ... 60 more Now, the obvious fix for this is to update all instances of *pages.xml to refer to the new DTD and that works fine. What concerns me is that this situation is able to go completely undetected. Looking at the code for DTDEntityResolver, I notice that that the situation is handled but only logged as debug - given the performance impact of downloading a DTD on every page invocation shouldn't the resolver at least issue a warning? if ( dtdStream == null ) { | log.debug( "unable to locate [" + systemId + "] on classpath" ); | } This issue might be even worse. It also looks like the DTD is being read and parsed quite frequently per page access. While debugging the invocation of a simple page with simple navigation, I get FOUR hits on the DTD reading code: both pages.xml and login.page.xml are read twice - postback and response; This seems like an unnecessary overhead, is it possible to lazy load the DTD and use a parsed instance over all requests? Cheers, Chris View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050251#... 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