Hi, All, I have installed tomcat 4.1.24 on windows 2000 server and hardware is compaq. And jdk1.3.1_08 has installed. My web application deployed on the ROOT context of this tomcat and use own connection pool for MS SQL Server 2000. The jdbc driver for MS SQL Server2000 are msbase.jar, mssqlserver.jar, msutil.jar and located on %JAVA_HOME%\jre\lib\ext. The web application is working just as interface for user authentication. It works well about 2-3 weeks after starting tomcat and then suddenly fail to authenticate user. User data still on the proper table. I found exception message from the log file of tomcat and that message is repeated in a logfile. Does anybody know what is the meaning of this message?
Exception message is the below. ------------------------------------- 2004-02-06 15:41:05 StandardWrapperValve[default]: Servlet.service() for servlet default threw exception java.lang.NullPointerException at java.io.File.<init>(Unknown Source) at org.apache.naming.resources.FileDirContext.file(FileDirContext.java:880) at org.apache.naming.resources.FileDirContext.getAttributes(FileDirContext.java :487) at org.apache.naming.resources.BaseDirContext.getAttributes(BaseDirContext.java :797) at org.apache.naming.resources.ProxyDirContext.cacheLoad(ProxyDirContext.java:1 491) at org.apache.naming.resources.ProxyDirContext.cacheLookup(ProxyDirContext.java :1412) at org.apache.naming.resources.ProxyDirContext.lookup(ProxyDirContext.java:300) at org.apache.catalina.servlets.DefaultServlet$ResourceInfo.set(DefaultServlet. java:2267) at org.apache.catalina.servlets.DefaultServlet$ResourceInfo.<init>(DefaultServl et.java:2219) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.jav a:921) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:506) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:256) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja va:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180 ) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve. java:171) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172 ) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java :174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok eNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne ction(Http11Protocol.java:392) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav a:619) at java.lang.Thread.run(Unknown Source) --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
