If you run a dual stack system (ABAP + Java) and want to check if the integrated J2EE is running (without logging onto the O/S or using web browser) you
can do it in SAPGUI.
Execute transaction SMICM, Menu GoTo -> HTTP Server -> Display Data
In the next screen look for the line 'J2EE Server operational = TRUE', this means it’s running, if not it will be FALSE.