Oracle Database 11g Release 2 (11.2.0.1.0)
Standard Edition, Standard Edition One, and Enterprise Edition

Link da Página
http://www.oracle.com/technetwork/database/enterprise-edition/downloads/112010-win32soft-098987.html

Links diretos para download
Oracle Database 11g Release 2 (11.2.0.1.0) for Microsoft Windows (32-bit)
http://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_database_1of2.zip
http://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_database_2of2.zip

Oracle Database 11g Release 2 Client (11.2.0.1.0) for Microsoft Windows (32-bit) 
http://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_client.zip