Oracle Portal 11g: Incoming Oracle-Auth-Token does not match

One of our Server is experiencing the following error:

Incoming Oracle-Auth-Token does not match

 <Jul 17, 2013 2:27:36 PM SGT> <Error> <oracle.portal.page> <BEA-000000> <Unexpected exception in servlet
java.lang.IllegalStateException: Incoming Oracle-Auth-Token does not match.
     at oracle.webdb.page.PageBuilder.processUMDRequest(Unknown Source)
     at oracle.webdb.page.PageBuilder.process(Unknown Source)
     at oracle.webdb.page.Main.doRequest(Unknown Source)
     at oracle.webdb.page.ParallelServlet.doGet(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
     at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)
     at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
     at oracle.webdb.portal.servlet.PortalServlet.doGet(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)
     at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
>

Solution:

Follow the instruction in the following oracle document;

https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=313746813288231&id=1075472.1&_afrWindowMode=0&_adf.ctrl-state=pywbnj1bm_4

or the following link:
https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&id=1075472.1