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Re: Data Mirroring on two data centers -- How to use ASM ?

From: Madhu V <db.mail.1_at_gmail.com>
Date: Mon, 22 May 2006 11:30:06 -0500
Message-Id: <4471E70E.1040609@gmail.com>


Great discussion here !!

Someone mentioned in the list that.. requirements should be defined first. I totally agree with you, but unfortunately, our requirements keep changing and appears to be ever changing. Chiefly my original post is to understand the ASM possibility in our existing environment. We are not in any position to offer a final solution to the requirements presented to us, still investigating...

We do _*host based mirroring*_ to two data centers (This is a must for us, Plz don't ask me why ;)-). Both the data centers are located in a mile distance between them. we don't use any frame/SAN based replication solutions and last time i talked to Storage/Unix folks here, these solutions are very expensive and have no plan to implement them here.

Regards,
Madhu

Yechiel Adar wrote:
> It all come back to my original question:
> Why exactly he wants the second copy?
> I went back over the thread and did not see his reply to the question.
>
> Adar Yechiel
> Rechovot, Israel
>
>
>
> Tanel P├Áder wrote:
>
>> Sure,
>>
>> One benefit of using storage level replication is that it doesn't
>> require much DBA work to do it.
>>
>> But if your primary database crashes because of a block corruption in
>> a data dictionary table, then your DR site will have exactly the same
>> problem in it, doesn't matter how far away it is. With applying
>> archive/redologs to DR database you will less likely have this issue
>> (e.g. corruptions of primary database blocks due software failures or
>> disk controller glitches won't be tranferred over to DR).
>>
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

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Received on Mon May 22 2006 - 11:30:06 CDT

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