Database, Listerner, Intelligent agent, Data gatherer, OMS. I hope this is what you meant by services.

svrmgrl
connect internal
startup /shutdown immediate
exit

lsnrctl
start/stop <-- Listeners
dbsnmp_start/dbsnmp_stop <-- IA
exit

vppcntl -start/-stop

oemctrl start -oms
oemctrl stop sysman/password@host


Good luck.
Sam