SM36 – Define Background Job
SM37 – Background Job Overview
SM39 – Job Analysis (obsolete, replaced by SM37)
SM49 – Execute External OS commands
SM62 – Maintain Events
SM64 – Release of an Event
SM65 – Background Processing Analysis Tool
SM69 – Maintain External OS Commands
Sursa: http://wiki.scn.sap.com/wiki/display/Basis/TCodes+for+Background+Jobs+Administration