Hi, Thank you all for your answers.
First, the struts-*.jar files are in each webapp's WEB-INF/lib directory, not in Tomcat's shared folder. And both apps use the same version of Struts. I found the following exception (see full stack trace below) that I failed to see before, in the localhost*.log file from Tomcat : org.apache.xerces.parsers.XML11Configuration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration After googlig it and reading some posts other posts about similar issues suggesting that it could be a conflict between xerces library from the webapp and from the jdk's libs, I removed the xerces jar (it was xerces-2.6.2) from both apps. It solved the problem, and now both apps start normally on the same tomcat instance. See : http://www.mail-archive.com/d...@tomcat.apache.org/msg24296.html and http://issues.appfuse.org/browse/APF-846 Why the problem happened only when the 2 apps were deployed, and only for one of the two apps remains a mistery to me... If somebody has a clue as to what was happening exactly, I'd be interested ! Thanks again for the help Pierre The xerces problem stack trace : 17 août 2009 09:46:22 org.apache.catalina.core.StandardContext filterStart FIN: Starting filter 'struts2' 17 août 2009 09:46:23 org.apache.catalina.core.StandardContext filterStart GRAVE: Exception au d�marrage du filtre struts2 Unable to load configuration. - [unknown location] at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403) at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:48) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3709) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4363) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:578) 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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: Caught exception while loading file struts-default.xml - [unknown location] at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:894) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadDocuments(XmlConfigurationProvider.java:144) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.init(XmlConfigurationProvider.java:111) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:164) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55) ... 31 more Caused by: java.lang.ClassCastException: org.apache.xerces.parsers.XML11Configuration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration at org.apache.xerces.parsers.DOMParser.<init>(Unknown Source) at org.apache.xerces.parsers.DOMParser.<init>(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderImpl.<init>(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.SAX2DOM.<init>(SAX2DOM.java:69) at com.sun.org.apache.xalan.internal.xsltc.runtime.output.TransletOutputHandlerFactory.getSerializationHandler(TransletOutputHandlerFactory.java:187) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.getOutputHandler(TransformerImpl.java:392) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerHandlerImpl.setResult(TransformerHandlerImpl.java:137) at com.opensymphony.xwork2.util.DomHelper$DOMBuilder.setup(DomHelper.java:205) at com.opensymphony.xwork2.util.DomHelper$DOMBuilder.<init>(DomHelper.java:190) at com.opensymphony.xwork2.util.DomHelper$DOMBuilder.<init>(DomHelper.java:181) at com.opensymphony.xwork2.util.DomHelper$DOMBuilder.<init>(DomHelper.java:167) at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:107) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:885) ... 35 more -----Message d'origine----- De : Wes Wannemacher [mailto:w...@wantii.com] Envoyé : vendredi 14 août 2009 17:37 À : Struts Users Mailing List Objet : Re: Impossible to start two Struts 2 apps at the same time on Tomcat 6 Just curious, where are the struts-*.jar files? I vaguely remember a classloader issue if you are trying to put the jars in one of Tomcat's shared jar folders. -Wes On Fri, Aug 14, 2009 at 11:00 AM, HENRY Pierre<pierre.he...@unine.ch> wrote: > Hi, > > I have 2 separate Struts 2 webapps, based both on Struts 2.1.6. > > Both webapps work fine when deployed separately on Tomcat 6.0.18. But when I > deploy both at the same time on the same Tomcat, one is working (the first > one alphabetically) and the seconds doesn’t start up, it gives me the > infamous ‘SEVERE : error filterStart’ in the logs, and not much more > meaningful information as to why it’s crashing. (I set the log level to DEBUG > for the struts2 and xworks2 packages in log4j). > > If I comment out the struts 2 filter and filter mapping segments in the > web.xml of the second webapp, then the webapp starts without error (but of > course it doesn’t work), that’s why I think the problem is related to having > 2 Struts 2 webapps together. > > Thanks for any advice. I would like to at least have a stack trace… > > My config : > Vista 64 > Tomcat 6.0.18 > Struts 2.1.6 > Besides that my apps also use Hibernate, Quartz, Tiles… > > Pierre > > > > The log of Tomcat’s startup : > > Listening for transport dt_socket at address: 8888 > 14 ao¹t 2009 15:53:14 org.apache.catalina.core.AprLifecycleListener init > INFO: The APR based Apache Tomcat Native library which allows optimal > performance in production environments was not fou > nd on the java.library.path: c:\Program Files > (x86)\Java\jdk1.6.0_13\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C > :\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program > Files\Intel\DMIX;C:\Program Files (x86)\Com > mon Files\Roxio Shared\DLLShared;C:\Program Files (x86)\Common Files\Roxio > Shared\DLLShared;C:\Program Files (x86)\Commo > n Files\Roxio > Shared\9.0\DLLShared;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program > Files (x86)\WinSCP\;C:\Program > Files\SlikSvn\bin\;C:\Program Files\TortoiseSVN\bin;C:\Program Files > (x86)\CVSNT\ > 14 ao¹t 2009 15:53:14 org.apache.coyote.http11.Http11Protocol init > INFO: Initialisation de Coyote HTTP/1.1 sur http-8080 > 14 ao¹t 2009 15:53:14 org.apache.catalina.startup.Catalina load > INFO: Initialization processed in 319 ms > 14 ao¹t 2009 15:53:15 org.apache.catalina.core.StandardService start > INFO: D´┐¢marrage du service Catalina > 14 ao¹t 2009 15:53:15 org.apache.catalina.core.StandardEngine start > INFO: Starting Servlet Engine: Apache Tomcat/6.0.18 > 15:53:15,755 - [thread:main] > org.apache.tiles.context.ChainedTilesApplicationContextFactory.init() > WARN:'Cannot find TilesContextFactory class > org.apache.tiles.portlet.context.PortletTilesApplicationContextFactory' > 15:53:15,760 - [thread:main] > org.apache.tiles.context.ChainedTilesApplicationContextFactory.init() > WARN:'Cannot find TilesContextFactory class > org.apache.tiles.portlet.context.PortletTilesApplicationContextFactory' > 15:53:15,793 - [thread:main] > org.apache.tiles.context.ChainedTilesApplicationContextFactory.init() > WARN:'Cannot find TilesContextFactory class > org.apache.tiles.portlet.context.PortletTilesApplicationContextFactory' > 15:53:15,796 - [thread:main] > org.apache.tiles.context.ChainedTilesRequestContextFactory.init() > WARN:'Cannot find TilesRequestContextFactory class > org.apache.tiles.portlet.context.PortletTilesRequestContextFactory' > 15:53:16,569 - [thread:main] > ch.unine.sitel.bipeadmin.hibernate.HibernateSessionInterceptor.init() > INFO:'Initializing filter...' > 15:53:16,569 - [thread:main] > ch.unine.sitel.bipeadmin.hibernate.HibernateSessionInterceptor.init() > INFO:'Obtaining SessionFactory from static HibernateUtil singleton' > 15:53:19,482 - [thread:main] > ch.unine.sitel.bipeadmin.hibernate.HibernateUtil.<clinit>() > DEBUG:'Hibernate session factory created.' > 15:53:19,502 - [thread:main] > ch.unine.sitel.bipeadmin.struts.security.SecurityInterceptor.init() > INFO:'Intializing the securityInterceptor.' > 15:53:19,506 - [thread:main] > ch.unine.sitel.bipeadmin.services.SecurityService.reloadFile() > INFO:'Reloading permissions.xml file because it has changed.' > 15:53:20,602 - [thread:main] > org.apache.tiles.context.ChainedTilesApplicationContextFactory.init() > WARN:'Cannot find TilesContextFactory class > org.apache.tiles.portlet.context.PortletTilesApplicationContextFactory' > 15:53:20,610 - [thread:main] > org.apache.tiles.context.ChainedTilesApplicationContextFactory.init() > WARN:'Cannot find TilesContextFactory class > org.apache.tiles.portlet.context.PortletTilesApplicationContextFactory' > 15:53:20,649 - [thread:main] > org.apache.tiles.context.ChainedTilesApplicationContextFactory.init() > WARN:'Cannot find TilesContextFactory class > org.apache.tiles.portlet.context.PortletTilesApplicationContextFactory' > 15:53:20,653 - [thread:main] > org.apache.tiles.context.ChainedTilesRequestContextFactory.init() > WARN:'Cannot find TilesRequestContextFactory class > org.apache.tiles.portlet.context.PortletTilesRequestContextFactory' > 15:53:20,727 - [thread:main] > ch.unine.sitel.bipemailing.jobs.QuartzStartContextListener.contextInitialized() > INFO:'QuartzStartContextListener is starting Quartz jobs...' > 14 ao¹t 2009 15:53:20 ch.unine.sitel.bipemailing.jobs.QuartzUtils getQuartz > INFO: Starting the Quartz scheduler and save its instance > 15:53:20,847 - [thread:main] > ch.unine.sitel.bipemailing.jobs.QuartzStartContextListener.startFonctionsMonitoringJob() > INFO:'Scheduling FonctionsMonitoringJob using cron pattern '0 * * * * ?'...' > 15:53:20,927 - [thread:main] > com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.debug() > DEBUG:'Loading action configurations from: struts-default.xml' > 14 ao¹t 2009 15:53:20 org.apache.catalina.core.StandardContext start > GRAVE: Error filterStart > 14 ao¹t 2009 15:53:20 org.apache.catalina.core.StandardContext start > GRAVE: Erreur de d´┐¢marrage du contexte [/BIPE-Mailing] suite aux erreurs > pr´┐¢c´┐¢dentes > 14 ao¹t 2009 15:53:21 org.apache.coyote.http11.Http11Protocol start > INFO: D´┐¢marrage de Coyote HTTP/1.1 sur http-8080 > 14 ao¹t 2009 15:53:21 org.apache.jk.common.ChannelSocket init > INFO: JK: ajp13 listening on /0.0.0.0:8009 > 14 ao¹t 2009 15:53:21 org.apache.jk.server.JkMain start > INFO: Jk running ID=0 time=1/27 config=null > 14 ao¹t 2009 15:53:21 org.apache.catalina.startup.Catalina start > INFO: Server startup in 6390 ms > > > Pierre Henry > Software Engineer > ------------------------------------------------- > pierre.he...@unine.ch > +41 32 718 20 45 > ------------------------------------------------- > Université de Neuchâtel > Service Informatique et Télématique > Rue Emile-Argand 11 > Case postale 158 > CH-2009 Neuchâtel > > -- Wes Wannemacher Head Engineer, WanTii, Inc. 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