I'm especially curious to know about the default Yum repos config : where does Oracle Linux have its repos and its updates ? Do I have to subscribe to something to get them or are they free ? Well, I guess I'll have to wait for my download to finish to get the answer.
The yum repo is public but just contains the releases, no intermediate update packages. Those require an account on the ULN. See too
http://www.oracle.com/us/technologies/027617.pdf
The ULN is used by up2date, not yum.
https://linux.oracle.com/uln_faq.html
Cheers,
Niki
Alexander