Re: RAC & failing switch and power issues

From: Andrew Kerber <andrew.kerber_at_gmail.com>
Date: Thu, 3 Dec 2009 15:46:55 -0600
Message-ID: <ad3aa4c90912031346lafe0e46pd23ad35a5fc669dd_at_mail.gmail.com>

I have never seen that happen. From what I have seen, you have to have two nodes for an ejection, and node a ejects node b or node b ejects node a. I think you have to have 2 (or more) nodes up for a node eviction to happen.

On Thu, Dec 3, 2009 at 3:34 PM, <daniel.hubler_at_aurora.org> wrote:

>
> Running a 2-node RAC on AIX (v5.3).
> Oracle v10.2.0.3
>
> Application runs in active-passive fashion.
>
> We have issues with:
>
> a) the switch that is the RAC interconnect
> b) the power being supplied to that same switch
>
> Our current idea is to shut down the passive instance (prod2).
> We are assuming that this would leave us free to play games with the
> switch.
>
> Our software vendor is telling is this should be O.K.
>
> Oracle is telling us that if we pull the switch after shutting down PROD2,
> that the server running the active instance (PROD1) will "evict itself".
>
> This flies in the face of some testing we did early this year where we
> simulated loss of the switch
> by shutting down the interfaces via ifconfig.
>
> Would love to hear comments opinions about this situation.
> Thanks in advance.
>
> Dan Hubler
> Database Administrator
> Aurora Healthcare
>

-- 
Andrew W. Kerber

'If at first you dont succeed, dont take up skydiving.'

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Received on Thu Dec 03 2009 - 15:46:55 CST