"Oracle Drivers" is not generally interpretted to mean "Drivers written by Oracle [the company]", it means "drivers written for Oracle [ie: the database]". A case in point... would you describe the drivers Oracle supply for MySQL to be "Oracle drivers" or "MySQL drivers"?
So will you please stop pedantically splitting hairs. You cannot use the drivers Adobe have licensed from DataDirect to connect to an Oracle database in CF Standard. I have now had this verified by two people, both of whom are sitting in front of a CF Standard install, and have taken time to check this for you. You can describe the drivers however you like, but the fact remains you can't use 'em.
You need to get hold of some drivers from somewhere else. I recommend getting some from Oracle, given - as you point out - they are the vendor of the DB in question. But there are other vendors who write Oracle drivers too. As you say: DataDirect do. You can use theirs. You have to pay for them though.
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Adam