Update: 9th October 2015
The installation procedure mentioned below are applicable for Windows 10 also. So enjoy! I just finished installing the 11G R2 64Bit database in my computer running Windows 10 64Bit professional.
I believe if someone is attempting to install Oracle database in a laptop or desktop machine, it is purely for limited development requirements or learning.
A many who are new to Oracle database may not able to install the software on many versions of Microsoft client OS like Windows 7 or 8 until certain levels of hacks are made.
Ignore what “I know everything” geeks screaming across tech forums, asking you questions like “DID YOU READ THE CERTIFICATION MATRIX”
You don’t have the time, neither do I.
Let us install the Oracle database 11g R2 this time on a Windows 8.1 (Update 1) dell laptop with following configuration 8GB memory, 1TB Hdd, Windows 8.1 update 1 64Bit Other oracle software installed
- Developer Suite 6i
- Developer Suite 10g
Download the installation files from Oracle repositories
- There are two files to download, a total of 2GB
- Extract the zip files and move the files inside a single folder
Once extracted, you have something like below
Now Switch to the second folder, which reads as “win64_11gR2_database_2of2”- Open up the “components” folder (D:\Oracle11gR2_64Bit\win64_11gR2_database_2of2\database\stage\Components)
- There will be four sub-folders within “Components” folder, copy them to D:\Oracle11gR2_64Bit\win64_11gR2_database_1of2\database\stage\Components folder
That’s all. Just start the installation process. Make sure you have changed the virtual memory settings of your box prior the installation (If you already have developer suite 10g, you already changed it) Start the installation by executing “setup.exe” 
You will get one warning, about not meeting the recommended environment requirements (/me chuckles). We didn’t check the 32Bit version of Oracle Database 11g R2, however the method should be same. Hope you enjoyed another post from us
for Windows7bugs
rajesh