Best way for clone db

hi All,
I've a simple question about clone DB.
I've a big (5TB) production database. I need to clone this database for test environment on second server.
I'm think to use rma DUPLICATE command. Both of server have can read and write on the same file system
oracle is 11 2.0.2 version and database use asm
Can I create a new rac instance on the second server and use it for restore db? How? Normaly I restore on single instance and after create DB and service for rac.....
Have you any tech doc for this ?
Regards
Giovanni

Hi,
yes. you can. you simply need to shutdown one of the nodes (target nodes), alter the init for cluster_database=false, and then do a normal duplicate.
yes, you need an auxiliary, because you are going to be connected to both DBs: target (production) and auxiliary (test).
No problem there.
Regarding time on network. you will only use the network heavily if you run a duplicate from active database.
if you run a normal duplicate, the command uses already existing backup pieces, with minor network communication between the target and auxiliary.
RMAN only connects to get the CF information.
From a recent experience, I duplicated a 4TB database in 23hours with no noticeable burden on production. So you have a baseline.
hope this helps.
br,
jpinela.

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