TDP for SAP is installed via an X-windows session, rather than smit, so vncserver will need to be invoked.

bash-3.00# vncpasswd
Password:  (Enter a password here)

bash-3.00# vncserver

New 'X' desktop is sapcps:3   (<-- This number will vary)

Starting applications specified in //.vnc/xstartup
Log file is //.vnc/sapcps:3.log

bash-3.00#

Open a vnc client session (e.g. vncviewer) on your PC and connect to the server and port created by the server (if the server number is '3' like the example above, the port will be '5903', if its' '2', it will be '5902', etc..)

In this example, you would connect to 'sapcps-gbe.domain.pri:5903'