Migration Oracle 10.2.0.4 to another site

Hi gurus,

I´ll need to migrate an ORACLE database to another site (1000 miles) and I need to know, what is the best practice to do so.
I need to copy the entire database to a new server whith the minimal downtime and risk when the source database is opened (if possible).


Target and the source server are the same:

AIX 6.1 on Power 780.
Between the servers, we have a 100 mb network connection
10.2.0.4 - single Instance database

I have two options in my mind:

(1) only MIGRATE disks and mount them on the server target.
For me, it's the easiest way, I fear of downtime but the database 1 TB and it will take a long time to transfer.

(2) compressed backup of the whith DUPLICATE the DATABASE to use. (Doubt)
My database is archivelog and I want to back up the database and it is archivelogs and run the command duplicate.
My question is: after RMAN restore backup and apply logs archived files that were backed up, is it worth the recent changes on the database that have not been saved?

Kind regards

If you're like many sites, the compressed backup will be about one-tenth the size of the db. So, how long to transport 100G more than 100 mb link? About 12 M per second is the best you could hope (depending on what else go in), so consider a minimum of 3 hours, and it could be ten times that. You will need to test for. Another possibility is cold copy on a disk usb $ 500 2T and ship it to the course. You can also use rman like that, but be careful to have the identical directory structure to put the backup sets in (if I do not forget about a new feature, it has been awhile since I lack of network speed during this operation).

It is also a way "he dribbles on" If you have time, take some time to network files above and set up a standby mode, then however much time it takes to catch up with newspapers, then a brief interruption to pass. Depends on your availability requirements.

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