I have got a task to install 184.108.40.206 on Redhat Linux x86_64bit and upgrade db from 10.2.0.3 for one of the applications, so the following is the information regarding the software.
While it's worth to note that, if you are at 220.127.116.11 then moving to 18.104.22.168 is not a patchset installation but a full database upgrade.
To download and install 11gR2, get full Oracle database 11gR2 22.214.171.124 software from patch 10098816
Note that, Starting with the 126.96.36.199 patch set, Oracle Database patch sets are full installations of the Oracle Database software. This means that you do not need to install Oracle Database 11g Release 2 (188.8.131.52) before installing Oracle Database 11g Release 2 (184.108.40.206).
To Download 220.127.116.11 rdbms software go to My Oracle support: patch 10098816
Please select your platform before downloading (Click on "Platform or Language" drop down menu).
From here you can download total 7 disks and the following is the description for each one,
Note that Oracle Database (includes Oracle Database and Oracle RAC)
You must download both the following zip files to install Oracle Database.
p10098816_112020_platform_1of7.zip & p10098816_112020_platform_2of7.zip
Oracle Grid Infrastructure (includes Oracle ASM, Oracle Clusterware, and Oracle Restart)
Oracle Database Client
For help in installation and upgrades please don't hesitate to contact me at email@example.com or call me on my cell 0097433164959.