I have ran the following queries:
Select * From sys.registry$history
Select * From v$version
The first query seems to be in date order and the last entry back in 2012 as "APPLY" 18.104.22.168"
Likewise the version of v$version shows in PL/SQL release 22.214.171.124.0
My question is, is there anywhere to see a build history for r11 of Oracle database? I.e. a list of database versions per CPU to see how far behind in terms of security it is? for example version 126.96.36.199 seems to relate to the CPU in October 2011?