My title is not very understanding.
i can explain,
in my pc, i have a virtualbox and guest os is Linux. On this linux virtualbox, i'm running a RAC database.
i installed a single instance database on windows and then i installed 12c enterprise manager by referencing this single instance database.
Now, i want to control my rac database from 12c which is installed on windows. I can ping my linux machines from windows but i cant recognize linux host names from 12c.
is it possible?
You can control that , you need to install 12C agent on target server. You can install agent manually and as well through the console itself.
Go to Setup -> Add Targets -> Add Targets Manually and then add host target and install the software,