Re: how to get a list of the users logged on to SAP System?

Hi,

Tcode - SM04

in that choose Goto -> Terminals -> to display a list of all users who are logged on in your SAP system. The list includes all application servers in your system.

please find more information in the below link

       http://help.sap.com/saphelp_nwpi711/helpdata/EN/47/c32bd7f41f2974e10000000a42189b/content.htm

regards

Kannan