In this article I try to explain to move  E-Business Suite R12(12.0.4)  with Oracle 10g (10.2.0.2 ) on windows2003-32 bit version to windows2003-64 bit platform wiht 10.2.0.4 upgrade.

You can also use this document for moving  windows2003-32 bit version to windows2008-64 bit platform. If you move your database from win2003-32 bit to win2008-64 bit, you need to upgrade your source database first 10.2.0.4 version than you need to use below setup 10g setup on your target server:

Oracle Database 10g Release 2 (10.2.0.4.0)
Enterprise/Standard Edition for Microsoft Windows Vista x64, Windows Server 2008 x64,
Microsoft Windows Server 2008 R2 x64, Windows 7 x64

This setup is avaliable here

For my step by step please click here