Oracle's Unbreakable Linux is not "simply" a copy of RHEL; it is compiled from the sources used by Red Hat to compile RHEL. The binaries you get from Red Hat are not identical to the binaries you get from Oracle. If you went to the auto parts dealer, bought the pieces of a Prius and then assembled it yourself, would your insurance company give you the same rate they give other Prius owners? Maybe your self-assembled car looks and acts like any other Prius, but what if...?
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