Update Oracle Linux 7 to 8

Since Oracle Linux is actually based on RHEL, the answer will be : NO, you cannot upgrade from version 7 to version 8 safely. The differences are just too much.

If you were on RHEL 6, there is (or perhaps, WAS) an package, which does exactly this - prepares the system and upgrades it to the next major version.

But it got pulled out, due to issues with the success rate. Seems like people were often left with broken systems.

EDIT: As per @Tanz87, as of 31 March 2011 (2 months after i made this answer), Oracle is now providing a way to upgrade from Oracle Linux 7 to Oracle Linux 8.3.