1、下载Oracle 11g R2 for Windows的版本 
下载地址：http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html 

其中包括两个压缩包：win64_11gR2_database_1of2.zip，win64_11gR2_database_2of2.zip 

Oracle 11g R2 for Win7旗舰版（64位）的安装步骤

http://supportopensource.iteye.com/blog/1046171