Oracle 11 g R2 軟體下載網址，下載OTN上的這些軟體，你需要一個OTN免費帳號，不過如果透過迅雷進行下載，就不用登陸OTN了
win64：
http://download.oracle.com/otn/nt/oracle11g/112010/win64_11gR2_client.zip
http://download.oracle.com/otn/nt/oracle11g/112010/win64_11gR2_database_1of2.zip
http://download.oracle.com/otn/nt/oracle11g/112010/win64_11gR2_database_2of2.zip
win32：
http://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_client.zip
Linux x86-64：
Oracle Database 11g Release 2 (11.2.0.1.0) for Linux x86-64
http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_client.zip
http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_database_1of2.zip
http://download.oracle.com/otn/linux/oracle11g/R2/linux.x64_11gR2_database_2of2.zip