do oracle have a similar concept of support lifecycles for all their core RDBMS releases? i.e. 9i, 10g, 11g etc. By support I am specifically interested in patching, i.e. functional or security bugs? Is there anywhere you can see reamining support (in terms of dates) for all major releases?
Also are oracle security patches cumulative, specifically security patches? I.e. if you find an oracle 11g has never been patched since it was installed, is it a case of installing 1 cumulative patchset, or will you likely have to install dozens of security patches?