Intermitent pauses when loading JSP page.

Solaris 7
Weblogic V5.1 SP5
Apache 1.3.12
Mod_wl_ssl.so
JDK 1.3
Hi,
We have two environments running very similar configurations.
The first is a test environment with an Ultra5 running as an Apache server
and an Ultra 10 as the weblogic server. Two databases are currently being
used one is an SQL and the other Oracle.
The second is our production site, and is the same apart from the hardware,
the Apache system is a Netra and the Weblogic server is a 220R. (There are
some other differences, physical location etc)
On the test site everything is fine but on the live site we are experiencing
a long pause when loading pages. This happens every 10-15 times a page is
loaded, and only on JSP pages. It seems to stop after loading part of the
page and around 30-60 seconds later the rest gets loaded.
This is very easy to reproduce just by hitting the home page of our site
about 10 times.
I'm going to swap out as many network components at our co-location as
possible, but I'm wondering if anybody else has experienced a similar
problem.
Regards
Steve Haigh

It turned out to be a faulty network component!! Strange behaviour though.
Steve Haigh <[email protected]> wrote in message
news:3a077a36$[email protected]..
Solaris 7
Weblogic V5.1 SP5
Apache 1.3.12
Mod_wl_ssl.so
JDK 1.3
Hi,
We have two environments running very similar configurations.
The first is a test environment with an Ultra5 running as an Apache server
and an Ultra 10 as the weblogic server. Two databases are currently being
used one is an SQL and the other Oracle.
The second is our production site, and is the same apart from thehardware,
the Apache system is a Netra and the Weblogic server is a 220R. (There are
some other differences, physical location etc)
On the test site everything is fine but on the live site we areexperiencing
a long pause when loading pages. This happens every 10-15 times a page is
loaded, and only on JSP pages. It seems to stop after loading part of the
page and around 30-60 seconds later the rest gets loaded.
This is very easy to reproduce just by hitting the home page of our site
about 10 times.
I'm going to swap out as many network components at our co-location as
possible, but I'm wondering if anybody else has experienced a similar
problem.
Regards
Steve Haigh

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package insurance;
import java.io.IOException;
import java.util.Vector;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class InsSer extends HttpServlet implements Servlet {
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     * @see javax.servlet.http.HttpServlet#HttpServlet()
     public InsSer() {
          super();
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     * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest arg0, HttpServletResponse resp)
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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     * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest arg0, HttpServletResponse resp)
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          ((PolicyObj) policyList.get(0)).setCustomerName("Salim Zeitouni");
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Message was edited by:
sfz1
Message was edited by:
sfz1

I am new to servlets/jsp so excuse if I am doing something silly here:
I have a JSP page the suppose to be loading a session attrbute from a simple servlet. When I go to load the jsp page, I get Could not invoke the service() method.
Any help is much appreciated:
Here is my JSP:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
     pageEncoding="ISO-8859-1"%>
<%@ page session="true" import="insurance.PolicyObj,java.util.*"%>
<% Vector VTable = (Vector) session.getAttribute("policyTable"); %>
<HTML>
<BODY>
<Form name=listTable action="InsSer" method="post">
<TABLE border="1">
     <TBODY>
          <TR>
               <TD width="258" align="center"><B>Policy Id</B></TD>
               <TD width="187" align="center"><B>Customer Name</B></TD>
               <TD width="160" align="center"><B>Agent Name</B></TD>
               <TD width="134" align="center"><B>Status</B></TD>
          </TR>
          <TR>
<%
for (int index=0; index < VTable.size();index++) {
PolicyObj TableL = (PolicyObj) VTable.elementAt(index);
%>
     <TR bgcolor="#99CCFF">
<TD width="258" align="center"> <%= TableL.getPolicyId()%> </TD>
<TD width="187" align="center"> <%= TableL.getCustomerName()%> </TD>
<TD width="187" align="center"> <%= TableL.getAgentName() %> </TD>
<TD width="187" align="center"> <%= TableL.getPolicyStatus() %></TD>
</TR>
     <% } %>
     </TBODY>
</TABLE>
<P><INPUT type="submit" name="Submit" value="Refresh Active Policies"></P>
</BODY>
</HTML>
Here is my servlet:
package insurance;
import java.io.IOException;
import java.util.Vector;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class InsSer extends HttpServlet implements Servlet {
     /* (non-Java-doc)
     * @see javax.servlet.http.HttpServlet#HttpServlet()
     public InsSer() {
          super();
     /* (non-Java-doc)
     * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest arg0, HttpServletResponse resp)
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
          doPost(req,resp);
          // TODO Auto-generated method stub
     /* (non-Java-doc)
     * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest arg0, HttpServletResponse resp)
     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
          //PolicyObj[] policyTable = new PolicyObj[3];
          HttpSession session = req.getSession(false);
          //if (session == null) {
               //resp.sendRedirect("http://localhost:9080/Insurance/error.html");
          //Vector buylist = (Vector) session.getAttribute("PolicyList");
          Vector policyList = null;
          policyList.addElement(new PolicyObj());
          ((PolicyObj) policyList.get(0)).setPolicyId("0009800002");
          ((PolicyObj) policyList.get(0)).setCustomerName("Salim Zeitouni");
          ((PolicyObj) policyList.get(0)).setAgentName("Jack Smith");
          ((PolicyObj) policyList.get(0)).setPolicyStatus("Pending");
          session.setAttribute("policyTable",policyList);
          ServletContext sc = getServletContext();
          RequestDispatcher rd = sc.getRequestDispatcher("InsSev1.jsp");
          rd.forward(req,resp);
Message was edited by:
sfz1
Message was edited by:
sfz1

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[06/Jul/2004:12:26:35] failure (18984): for host 10.8.16.243 trying to GET /LoginResponse.jsp, service-j2ee reports: StandardWrapperValve[jsp]: WEB2792: Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: WEB4000: Unable to compile class for JSP /opt/SunWebSrv/https-webinstance/ClassCache/https-webinstance/_jsps/_tree/_www_treeview_jsp.java:8: 'class' or 'interface' expected import javax.servlet.*; ^ /opt/SunWebSrv/https-webinstance/ClassCache/https-webinstance/_jsps/_tree/_www_treeview_jsp.java:9: 'class' or 'interface' expected import javax.servlet.http.*; ^ /opt/SunWebSrv/https-webinstance/ClassCache/https-webinstance/_jsps/_tree/_www_treeview_jsp.java:10: 'class' or 'interface' expected import javax.servlet.jsp.*; ^ /opt/SunWebSrv/https-webinstance/ClassCache/https-webinstance/_jsps/_tree/_www_treeview_jsp.java:11: 'class' or 'interface' expected import org.apache.jasper.runtime.*; ^ 4 errors at org.apache.jasper.compiler.Compiler.compile(Compiler.java:312) at com.iplanet.ias.web.jsp.JspServlet$JspServletWrapper.loadJSP(JspServlet.java:764) at com.iplanet.ias.web.jsp.JspServlet$JspServletWrapper.access$000(JspServlet.java:624) at com.iplanet.ias.web.jsp.JspServlet.serviceJspFile(JspServlet.java:401) at com.iplanet.ias.web.jsp.JspServlet.service(JspServlet.java:363) at javax.servlet.http.HttpServlet.service(HttpServlet.java:908) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:772) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:471) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:382) at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:443) at jsps.LoginResponse_jsp._jspService(_LoginResponse_jsp.java:114) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) at javax.servlet.http.HttpServlet.service(HttpServlet.java:908) at com.iplanet.ias.web.jsp.JspServlet$JspServletWrapper.service(JspServlet.java:675) at com.iplanet.ias.web.jsp.JspServlet.serviceJspFile(JspServlet.java:447) at com.iplanet.ias.web.jsp.JspServlet.service(JspServlet.java:363) at javax.servlet.http.HttpServlet.service(HttpServlet.java:908) at org.apache.catalina.core.StandardWrapperValve.invokeServletService(StandardWrapperValve.java:771) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:322) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:212) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:209) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509) at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor.java:161) at com.iplanet.ias.web.WebContainer.service(WebContainer.java:578)
****************************************************

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Intermitent pauses when loading JSP page.

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