Oracle is planning to certify 188.8.131.52 on Windows Server 2012 R2. 11gR2 is not planned to be certified on Windows 2012 R2.
As of today, 184.108.40.206 is not released. It is planned to be released in 2nd half of calendar year 2014.
Reference: Release Schedule of Current Database Releases (Doc ID 742060.1)
I raised an SR to ask if 220.127.116.11 will be supported on Windows 2012 R2,
I have just been told today by oracle support that 11gr2 is planned to be certified on Windows 2012 R2.
"Oracle has plan to certify, the dates not yet confirmed" ( I quote ).
Could you clarify please ?
Oracle is not planning to certify 18.104.22.168 on Windows 2012 R2.
Only 22.214.171.124 or higher is only planned.