Re: Question about RAC

Hi Bryan

Did each instance have dedicated NIC and Interconnect?

TIA Alex

On 10/30/06, Bryan Thomas <bthomas_at_perftuning.com> wrote:
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> Anurag,
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> This is standard practice among most RAC installations. Last week I
> upgraded a 4-node cluster that had 5 instances on each node.
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> The obvious question is - How much memory do they have? Each instance
> will require its own SGA.
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> Bryan Thomas
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> Senior Consultant and Practice Manager
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> Performance Tuning Corporation
>
> b_removeme_thomas_at_perftuning.com
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> www.perftuning.com
>
>
>
>
> ------------------------------
>
> *From:* oracle-l-bounce_at_freelists.org [mailto:
> oracle-l-bounce_at_freelists.org] *On Behalf Of *amonte
> *Sent:* Monday, October 30, 2006 2:38 PM
> *To:* Anurag Verma
> *Cc:* oracle-l_at_freelists.org
> *Subject:* Re: Question about RAC
>
>
>
> Sorry I should have stated clearer.
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> Say we have server srv1 and srv2 a database called RAC in the shared
> storage and a instance rac1 in srv1 and rac2 in srv2, that is the usual
> implementation I have seen.
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> The customer wants this:
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> database RAC and CAR in shared storage
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> instance rac1 and car1 in srv1
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> instance rac2 and car2 in srv2
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> Obviously rac1 and rac2 forms RAC and car1 and car2 forms CAR. Not very
> logical in my opinion, seems like others think so.
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> TIA
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>
>
> Alex
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> On 10/30/06, *Anurag Verma* <anuragdba_at_gmail.com> wrote:
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> Do you mean for a single database, use 4 instances each in 2 servers??
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> Then what is the meaning of high availability??
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> If the customer wants RACing 4 seperate databases each with 2 RAC
> instances on the 2 servers/nodes, then that is possible.
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> If it is the first case, you have to educate the customer...
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>
> Anurag
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> On 10/30/06, *amonte* <ax.mount_at_gmail.com> wrote:
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> Hi all
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> I have a question about RAC.
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> I have implemented a few RAC on a couple of customers. I have always
> worked with two nodes and a single database, i.e 2 servers and a common
> database in a shared storage.
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>
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> I have a customer who wants to use 2 servers to implement 4 RACs, i.ehacing 4 instances in each server. Has anyone done this sort of
> implemntation? I am not sure if this is logical or ilogical :-)
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> Thanks
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> Alex
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