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" 184.108.40.206"
Likewise the version of v$version shows in PL/SQL release 220.127.116.11.0
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 18.104.22.168 seems to relate to the CPU in October 2011?