Re: RAC ASM question

From: Sanjay Mishra <smishra_97_at_yahoo.com>
Date: Mon, 5 Mar 2007 07:45:02 -0800 (PST)
Message-ID: <527943.68840.qm@web51302.mail.yahoo.com>

Thanks Salem. Is there any benchmark or result or best practices that says that don't create more than x number of DG.

Sanjay

Ghassan Salem <salem.ghassan_at_gmail.com> wrote: Sanjay,

You can do it either way. The right way depends on your disks and disk layout. If you'll end up with the same disks in different diskgroups, I do not see the utility of using several ones. Having one DG allows for better spread of I/O. Having several DGs allows for more control on when to use redundancy (depending on app requirement, ...) It's better to have a DG for FRA, as it's usage and redundancy req are different than 'normal' data. rgds

On 3/3/07, Sanjay Mishra <smishra_97_at_yahoo.com> wrote: Hi

I am building a RAC environment which will host 3 Application Database. I am planning to create 4 Oracle Home like one for each Database and 4th one for ASM. This way I can patch any one without affecting others.

Now in order to ceate the Database in ASM, Can I create seperate Disk Group for each Application Database or I should create one big Disk Group.
What are the advantage/disadvantage of creating multiple diskgroups.
Is it good to create seperate Diskgrroup for each Redolog, Archivelog, Flashback and Data

TIA
Sanjay

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Received on Mon Mar 05 2007 - 09:45:02 CST