Oracle became the world's most popular database because it runs on more than 60 OS platforms, everything from a mainframe to a Mac.
MOSC Note 1130327.1 says that Oracle is discontinuing support for the Commodore 64!
This is just an example, but it shows that Oracle does indeed possess a sense of humor:
Oracle Database 10.2 End of Premier Support - Frequently Asked Questions ...
8. Will I get more time to install 10.2.0.5 if it is released on my platform close to April 30, 2015?
Yes. We will always support the previous patch set for at least 3 months, even if it is released after the one year to install the new patch set is up. For example, patching for 10.2.0.4 generally expires on April 30, 2015. If you are running 10.2.0.4 on the Commodore 64 platform and Oracle releases it after April 30, 2015, we will still patch 10.2.0.4 for you for 3 months following the 10.2.0.5 release on your platform.