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Webpage not loading for more than 20 users (200 Aborted)

Munirathinavel
Tue, 09 Feb 2010 07:03:32 -0800


While doing load testing i'm accessing the application but i'm not able open
the page. It's saying page XMLHTTPRequest 200 Aborted..... Can please tell
me what is the problem....  

Feb 9, 2010 6:18:51 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
        at java.lang.StringBuffer.<init>(StringBuffer.java:103)
        at
org.apache.jsp.WEB_002dINF.jsp.rental.createbooking_jsp._jspService(createbooking_jsp.java:74)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
        at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
        at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
        at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
        at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
        at
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1062)
        at
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)
        at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)
        at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
com.imababa.empower.common.view.AuthFilter.doFilter(AuthFilter.java:69)
        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:233)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
        at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
        at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
        at java.lang.Thread.run(Thread.java:619)

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