Hi,
you can also create a "function" in the vCOPS View.
just click a the top of the page and create your own "function" / "folder". At this point you can also create a rule-set. For example: you will ad more oracle servers with a unique name these new server will also in these created "folder" / "function".
It is not necessary to create separate folders in your vCenter.
if you have questions . . let me know