Installing Oracle 9i Client 64-bit on WINTEL 64bit Server throws error "The image file ....\setup.exe is valid, but is for a machine type other than."

Today we faced this issue, When we installed Oracle 9i Client (64-bit edition) on Windows 2003 SP1 64-bit (x64) Server, It throwed the below error

Error Message:
The image file ....\setup.exe is valid, but is for a machine type other than the current machine

Root Cause:
Oracle9i Database Release 2 Enterprise/Standard/Personal/Client Edition for Windows XP 2003/Windows Server 2003 (64-bit) version is only certified on the Itanium platform (IA64) so it will not work for x64 Platform.

Solution:
Oracle Database 10g Release 2 (10.2.0.1.0) for Microsoft Windows (x64) ( which can be patched to 10.2.0.2.0 ) will work for x64 Architecture or Revert the OS to 32-bit!

For more information & compatiable platform visit https://metalink.oracle.com (it requires product support identifier)