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OS migration from 32 bit to 64 bit

Dears,

I need to do OS migration on our ECC5 server installed on Windows 2003 server with oracle 9i database.

I have gone through several sap notes and have some doubts:

1-OS migration from 32 bit to 64 bit is a homogeneous or hetrogeneous system copy.

2-If it is homogeneous copy then I have performed that activity but that i did it for copy from PRD to DEV and bit version was same so would this 32 bit to 64 bit copy be same of that or i have to do some additional steps.

3-I also read that Oracle 10.2 is only installed on 64 bit,please confirm if it is right then i think i have to do first database upgrade on 32 bit system from 9i to 10.2.

Please suggest

Shivam Mittal

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