Tomcat Server Error

Hi all,

My web application runs using apache tomcat server. It runs fine, but whenever there is query search to the oracle database, the application stops running and the log show me this error. Can someone please explain me about this error and what I must be doing in order to rectify it.

Code:

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more catalina.2010-09-24.log
Sep 24, 2010 6:18:06 PM org.apache.jk.common.MsgAjp processHeader
SEVERE: BAD packet signature 18245
Sep 24, 2010 6:18:06 PM org.apache.jk.common.ChannelSocket processConnection
SEVERE: Error, processing connection
java.lang.IndexOutOfBoundsException
at java.io.BufferedInputStream.read(BufferedInputStream.java:306)
at org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:601)
at org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:557)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:666)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:871)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Sep 24, 2010 6:18:06 PM org.apache.jk.common.MsgAjp processHeader
SEVERE: BAD packet signature 18245
Sep 24, 2010 6:18:06 PM org.apache.jk.common.ChannelSocket processConnection
SEVERE: Error, processing connection
java.lang.IndexOutOfBoundsException
at java.io.BufferedInputStream.read(BufferedInputStream.java:306)
at org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:601)
at org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:557)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:666)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:871)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Sep 24, 2010 6:18:06 PM org.apache.jk.common.MsgAjp processHeader
SEVERE: BAD packet signature 18245
Sep 24, 2010 6:18:06 PM org.apache.jk.common.ChannelSocket processConnection
SEVERE: Error, processing connection
java.lang.IndexOutOfBoundsException
at java.io.BufferedInputStream.read(BufferedInputStream.java:306)
at org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:601)
at org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:557)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:666)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:871)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)

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without code,it is not pssoible to give solution.
I think the query string is wrong.

Restarting the tomcat server solved my problem thanks..but I ended up getting another error

Code:

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more localhost.2010-09-28.log
Sep 28, 2010 9:59:06 AM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
        at org.apache.jsp.Display_jsp._jspService(org.apache.jsp.Display_jsp:70)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
        at nci.cgf.genewindow.servlets.LocusRequest.doGet(LocusRequest.java:104)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)
Sep 28, 2010 9:59:06 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet LocusRequest threw exception
java.lang.NullPointerException
        at org.apache.jsp.Display_jsp._jspService(org.apache.jsp.Display_jsp:70)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
        at nci.cgf.genewindow.servlets.LocusRequest.doGet(LocusRequest.java:104)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)

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I made a few changes in my jsp page, but it didnt work the way i expected. so i replaced the changed jsp file with my backed up copy. Since then I get this error. Restarting the tomcat server didnt work. The same version of the jsp file works in the production server, no changes at all. But the test server show this error in the log file. Not sure what went wrong. Can someone explain me why this error is occuring?

Here is the code

Code:

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  String r = request.getParameter("r");

    if(r != null && user != null){
line number 70-->        // r is the sessionFeaturesBeanId
        LinkedHashMap inter =(LinkedHashMap) session.getAttribute("userreq");
        Inter inter = (Inter)vals.get(r);

        Loc fb = (Loc)session.getAttribute(inter.toString());

        fb.setDefaultUserOptions(true);
        lid=revert;
    }

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