Oh thanks for the explanation what binary file means. Really useful. Will take notes. But I still wonder why in the whole internet there is no any good explanation of what "RMAN Binaries" means? Probably it is because there is not common meaning of that, so one can have in mind really the RMAN.exe, but other could probably mean "everything needed for RMAN to function" which is far more from RMAN.exe. So since Oracle do not uses that term in the documentation, nor in their articles or books, isn't it better to ask the person what he means by that?
NOTE: I do not say that term RMAN Binaries is wrong, just say that this term is not widely accepted, so better ask the person what he means in such circumstances