Re: 10g to RAC - what to do to avoid data duplication ?

On Sat, 28 Apr 2007 11:14:05 +0200, "Golan" <Golan_at_hotmail.it> wrote:

>I'm going to create a 10gR2 database on a server (to be installed: SO Linux
>Red Hat 4.4).
>I will load in the database 4 terabyte of data during next months .
>
>On next december we would like the database to be part of a three node RAC.
>
>Now, the question is:
>Since I do not want to make a copy of 4 tera (cloning the database on the
>RAC, and I do not know how), would it be possible to make my actual node as
>part of the RAC without copying any data ?
>What can I do now on the server (to be installed as mentioned before) to put
>myself in the best situation for the future migration to the RAC ?
>
>Thank you
>Massimo
>

And your current datafiles are on

- RAW
- ASM
- cooked filesystem?

In the latter case you would need to convert the datafiles to RAW (using dd or RMAN) or ASM (using RMAN). This would involve copying 4Tb.
In short: yes it can be done, but forget about it if your files are not on a RAC compatible file system.

-- 

Sybrand Bakker
Senior Oracle DBA