Logout from Single Sign On an ADF application

  <af:goLink text=' #{securityContext.authenticated ? "Logout" : "Login"}'
                             id="gl1"
                             destination='#{securityContext.authenticated ? "/adfAuthentication?logout=true&amp;end_url=/<context-root>/faces/start-page-of-the-app"  : "/adfAuthentication?success_url=/<context-root>/faces/start-page-of-the-app"} '/>

or

Use a Logout Button with an Action Listener method to avoid this exception while logout - oracle.adf.controller.ControllerException: ADFC-04008: The BindingContext on the session is null 

       
<af:commandButton text=" #{securityContext.authenticated ? &quot;Logout&quot; : &quot;Login&quot;}" id="cb7"
                                actionListener="#{backingBeanScope.backingBean.logout}"/>

       
    public void logout(ActionEvent actionEvent) {
        ExternalContext ectx = FacesContext.getCurrentInstance().getExternalContext(); 
              HttpServletRequest request = (HttpServletRequest)ectx.getRequest(); 
              String url = request.getContextPath() + 
                            "/adfAuthentication?logout=true&end_url=/faces/start-page-of-the-application"; 
              try 
              { 
                 ectx.redirect(url); 
              } 
              catch (Exception ex) 
              { 
                  System.out.println("Exception!! Logging out"+ex);
                 // Handle the exception 
              } 
    }

Session Invalidate Add before logging out : update required