title: TGT expiring if we are using app1 and not using other
body: <p>we have a question about ticket-granting tickets expiration policy. We are using cas authentication. The TGT expires after 2 hours whereas java session exiperes after 30 minutes.Our problem is that if a user works only using a web application more than two hours and than tries to use another web application, the ticket-granting ticket is expired and so the user must re-login, although he can work in the first web application.</p>
  
  <p>Is there a way to renew ticket-granting ticket while the user is working in the first web application??</p>