Database Host Migration

Dear experts,
We plan to move the database to a new host with much more RAM, CPU. The new database server will have exactly the same OS version, Kernel version and the same version of database / grid standalone (ASM). I will have to install OS, Database software, Grid Standalone on the new server.
The current version of the database is 11.2.0.3.0 Enterprise Edition and the OS version is Oracle Enterprise Linux 6.3
However, we plan to use the same disks (ASM disks). I believe I don't need to use RMAN to do the migration, Is it correct?
Any idea how to make the migration?
Cheers,

DBA wrote:
I am planning to do the following;
1- Install Oracle Software , ASM grid standalone on the new host.
2- Create a snapshot controlfile from the instance on old host.
3- Create pfile from the instance on old host.
4- create Diskgroups DATA, FRA on the new server using the old disks ;
CREATE DISKGROUP DATA EXTERNAL REDUNDANCY
DISK '.../disk1, .../disk2';
CREATE DISKGROUP FRA EXTERNAL REDUNDANCY
DISK '.../disk3, .../disk4';This step will fail, because the the discs are already members of a diskgroup. You could of course use FORCE, and destroy the existing diskgroups. You probably don't want to do that.
A better option would be to start your new ASM instance, and let it discover the discs (either through the ASMLib or through the asm_diskstring parameter) and it will then be able to work out the diskgroup structure itself.
>
5- Mount the diskgroups DATA, FRA
6- startup nomount pfile='prile.ora'
7- Create the controlfile with resetlogs optionNo. The controlfile is already there.
8- Mount the database
9- recover database using backup controlfile until CANCEL; applying the archivelogs from ASM.Again, there is no need to recover anything.
10- Open database with resetlogs option
Do it make sense the procedure or I have missed something?
Cheers
Edited by: DBA on Apr 10, 2013 7:53 AM

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