It displays the processes based on status. It displays the processes belongs to all the instances.
From SM66 - Click on SELECT PROCESS
The major advantage of this is it displays the memory consumed by work process. Double click on the WP to display (Extended, Roll and the Heap Memory)
On Oracle execute
PS -ef |grep ora* (lgwr, smon, pmon, dbwr, ckpt, arch)
You can also get information regarding SAP BASIS