Sorry, this is not possible. You can see on OS level the so called disp-work processes which do the job. But you can't look into them more closely.
The ABAP runtime distributes the work on several work processes (the disp+work ). Several ABAP users share one process. Not with parallel threads but on a time slice basis, so only one user session is executed at a given time in on e work process. But you can't see from OS level which program is currently executed. The SAP users are not OS users. The work processes run all with the same OS user.
You can of course check on OS level if all the work processes are up and running but this is probably not want you want.
There are several monitoring services and tools available. Have a look at the Computing Center Management System (CCMS) documentation.
Dirk
