oamonapi.dll is a OAmonapi
belonging to Online Armor Firewall
from Tall Emu Pty Ltd
Non-system processes like oamonapi.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.