Unable to use session.setAttribute() method in oracle application server

Question

i am creating a simple jsp page for two lines of code as
<%@ page language="java" session="true" %>
<% session.setAttribute("sam","sam"); %>
and deploying it in oracle 10g application server. when i am accessing that page, getting an error as
oracle.jsp.provider.JspCompileException:
Errors compiling: page url
Method setAttribute(java.lang.String, java.lang.String) not found in interface
javax.servlet.http.HttpSession. session.setAttribute("sam","sam");
can anybody give the solution???

Answer 1

Here is a diagnostic page which will tell you what version of JSP/Java etc you are using, the session Id, and where the session comes from.
The standard approach for session tracking is to use a browser "session cookie", using the standard name JSESSIONID.
Session cookies are different from standard cookies as they just remain in memory, and do not get stored to your hard drive. As such, They are not so easy to monitor. This page also uses javascript to show any cookies.
<h2> Server Info </h2>
Server info = <%= application.getServerInfo() %> <br>
Servlet engine version = <%=  application.getMajorVersion() %>.<%= application.getMinorVersion() %><br>
JSP version = <%= JspFactory.getDefaultFactory().getEngineInfo().getSpecificationVersion()  %> <br>
Java version = <%= System.getProperty("java.vm.version") %><br>
Session id = <%= session.getId() %><br>
From cookie = <%= request.isRequestedSessionIdFromCookie() %> <br>
<h3>javascript cookies</h3>
  <script>
    document.write(document.cookie);
  </script><br>What you described with the IE browsers sharing sessions when you start one from the other with "File:New Window" is the expected behaviour. All "child" windows of a browser share the same session. No, there is nothing you can do to stop this or affect this functionality.
Cheers,
evnafets