Windows 2008 R2 is not supported for 10.2 clients and Oracle have stated that they are not planning to certify it anytime soon. If you attempt to run setup.exe then you get the following error:
Starting Oracle Universal Installer... Checking installer requirements... Checking operating system version: must be 5.0, 5.1, 5.2 or 6.0 . Actual 6.1 Failed <<<< Exiting Oracle Universal Installer, log for this session can be found at C:\User s\!TAYLO~1\AppData\Local\Temp\3\OraInstall2012-04-17_01-32-10PM\installActions20 12-04-17_01-32-10PM.log Please press Enter to exit...
It is possible to hack the list of supported versions in the installer parameter file to allow the installation to proceed. Simply edit the file <installer_dir>/install/oraparam and add ",6.1" to the end of the line beginning "windows=" as follows:
Save the file and then re-run Setup.exe.
Update: Run the installer using the following command: