Re: Question about RAC

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

On 10/30/06, amonte <ax.mount_at_gmail.com> wrote:
>
> Hi
>
> Do you mean 8 instances in 8 nodes shares same interconnect?
>
>
> On 10/30/06, Bryan Thomas <bthomas_at_perftuning.com> 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_at_gmail.com]
> > *Sent:* Monday, October 30, 2006 3:41 PM
> > *To:* Bryan Thomas
> > *Cc:* Anurag Verma; oracle-l_at_freelists.org
> > *Subject:* 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:
> >
> > 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_at_perftuning.com
> >
> > 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.
> >
> >
> >
> > 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_at_gmail.com> 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_at_gmail.com> 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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