A common question that comes up at customer visits and Oracle Database 11g events is "what are the various stages of Oracle's Lifetime Support"? And a related question is always "what type of support/fixes come with each support stage"?
The answer to both these questions can be found on Oracle's Lifetime Support Policy published here on oracle.com/support. It's also worth checking out Oracle's Lifetime Support Policy for Technology Products brochure which details where each release of Oracle Database is with respect to the various stages of Lifetime Support.