Re: Question about RAC

I make a pardon 8 instances in two nodes, not 8

On 10/30/06, amonte <ax.mount@xxxxxxxxx> wrote: 

Hi

Do you mean 8 instances in 8 nodes shares same interconnect?


 On 10/30/06, Bryan Thomas <bthomas@xxxxxxxxxxxxxx> wrote:
>
>  Alex,
>
>
>
> The NICs and the interconnect are related to the cluster (CRS).  There
> is only one cluster per RAC.
>
>
>
> There will only be one interconnect and one VIP set per cluster no
> matter how many instances are running.
>
>
>
> -Bryan
>
>
>  ------------------------------
>
> *From:* amonte [mailto: ax.mount@xxxxxxxxx]
> *Sent:* Monday, October 30, 2006 3:41 PM
> *To:* Bryan Thomas
> *Cc:* Anurag Verma; oracle-l@xxxxxxxxxxxxx
> *Subject:* Re: Question about RAC
>
>
>
> Hi Bryan
>
>
>
> Did each instance have dedicated NIC and Interconnect?
>
>
>
> TIA
>
>
>
> Alex
>
>
>
> On 10/30/06, *Bryan Thomas* < bthomas@xxxxxxxxxxxxxx> wrote:
>
> Anurag,
>
>
>
> This is standard practice among most RAC installations.  Last week I
> upgraded a 4-node cluster that had 5 instances on each node.
>
>
>
> The obvious question is - How much memory do they have?  Each instance
> will require its own SGA.
>
>
>
>
>
>
>
> Bryan Thomas
>
> Senior Consultant and Practice Manager
>
> Performance Tuning Corporation
>
> b_removeme_thomas@xxxxxxxxxxxxxx
>
> www.perftuning.com
>
>
>
>
>  ------------------------------
>
> *From:* oracle-l-bounce@xxxxxxxxxxxxx [mailto:
> oracle-l-bounce@xxxxxxxxxxxxx] *On Behalf Of *amonte
> *Sent:* Monday, October 30, 2006 2:38 PM
> *To:* Anurag Verma
> *Cc:* oracle-l@xxxxxxxxxxxxx
> *Subject:* Re: Question about RAC
>
>
>
> Sorry I should have stated clearer.
>
>
>
> 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.
>
>
>
> The customer wants this:
>
>
>
> database RAC and CAR in shared storage
>
>
>
> instance rac1 and car1 in srv1
>
> instance rac2 and car2 in srv2
>
>
> Obviously rac1 and rac2 forms RAC and car1 and car2 forms CAR. Not very
> logical in my opinion, seems like others think so.
>
>
>
> TIA
>
>
>
> Alex
>
>
>
>
> On 10/30/06, *Anurag Verma* < anuragdba@xxxxxxxxx> wrote:
>
> Do you mean for a single database,  use 4 instances each in 2 servers??
>
>
>
> Then what is the meaning of high availability??
>
>
>
> If the customer wants RACing 4 seperate databases each with 2 RAC
> instances on the 2 servers/nodes, then that is possible.
>
>
>
> If it is the first case, you have to educate the customer...
>
>
>
> Anurag
>
>
>
> On 10/30/06, *amonte* < ax.mount@xxxxxxxxx> wrote:
>
> Hi all
>
>
>
> I have a question about RAC.
>
>
>
> 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.
>
>
>
> 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 :-)
>
>
>
>
>
> Thanks
>
>
>
> Alex
>
>
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>


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