My web site run under apache 2.0.43 & tomcat 3.3.1
When I do some stress test, after some hits, I obtain, for some jsp pages, a http error (500 for not naming it!).
It seems that tomcat cannot resist when a lot of hits are done.
I don't want to imagine when more than 10 people will use, in the same time, this web site.
Thanks in advance for your help :)

See below the error message:
Root cause:
java.lang.IncompatibleClassChangeError
    at _0002fDealCreation_0002ejspDealCreation_jsp_0._jsp Service(_0002fDealCreation_0002ejspDealCreation_js p_0.java:50)
    at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:119)
    at javax.servlet.http.HttpServlet.service(HttpServlet .java)
    at org.apache.jasper.servlet.JspServlet$JspCountedSer vlet.service(JspServlet.java:137)
    at javax.servlet.http.HttpServlet.service(HttpServlet .java)
    at org.apache.jasper.servlet.JspServlet$JspServletWra pper.service(JspServlet.java:290)
    at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:438)
    at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:520)
    at javax.servlet.http.HttpServlet.service(HttpServlet .java)
    at org.apache.tomcat.facade.ServletHandler.doService( ServletHandler.java:574)
    at org.apache.tomcat.core.Handler.invoke(Handler.java :322)
    at org.apache.tomcat.core.Handler.service(Handler.jav a:235)
    at org.apache.tomcat.facade.ServletHandler.service(Se rvletHandler.java:485)
    at org.apache.tomcat.core.ContextManager.internalServ ice(ContextManager.java:917)
    at org.apache.tomcat.core.ContextManager.service(Cont extManager.java:833)
    at org.apache.tomcat.modules.server.Ajp13Interceptor. processConnection(Ajp13Interceptor.java:341)
    at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:494)
    at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:516)
    at java.lang.Thread.run(Unknown Source)