Error PRVG-11322 while atempting to install ODAC 12c release 3 I have been trying to install the Oracle Developper Tools with ODAC update 3 (because I need it to work with Entity framwork 6) but the Unified installer bring me a PRVG-11322 Error. 

It seem to be linked to the fact that my computer have an underscore in his hostname (and I can't change it, work domain-joined workstation)

Altought the install instructions mention installation using xcopy, I can't find the instruction that are supposed to be in the zip package.

I am pretty much out of ideas. Do you know how to do it.
use the installer in commandline mode and use the option to ignore prerequisite checks