Bingo, from your URL.
"Here's the problem when you use a single template all the time. Take a situation where you have a server running multiple Oracle databases - so you assign multiple application monitors to the node and you edit them to modify the SID and credentials. Now you've got multiple App monitors deployed to one server, all with the same name and you don't know which one is which. You can't tell from the App monitor name - only thing you can do is delve into each component and check. That's not easy to do on an enterprise scale with big consolidated databases servers."