Setting global level Portal timeout of 4 hours

Hello,

We want to establish a global level timeout of 4 hrs for Portal.

For example, lets say a user logs onto Portal and do not perform any action/clicks for 4 hours.

And then, after 4 hours, when user click on any tab/link on Portal, it should show "session expired" or "session timed out" or something similar message.

Could you please advise how this can be achieved?

Thanks & Regards,

Amey Mogare

PS:

But any action performed within this 4 hours time, lets say user logs onto Portal at 3.00pm and performs first action/click at 4.00pm, it should work and timeout/session-not-found message should not be shown.

This is well handled & is working fine for us using information from thread400 Session not found in web dynpro Java apps