Re: Oracle RAC and VIPs

From: Waldirio Manh„es Pinheiro <waldirio_at_gmail.com>
Date: Thu, 10 Jul 2008 13:26:15 -0300
Message-ID: <7df9f1820807100926v6a4dc425g1928c583e36b4842@mail.gmail.com>

    Alessandro, good afternoon

  Send the rac log files and the output of command

$ crs_stat -t

Cheers
Waldirio

2008/7/10, Alessandro Vercelli <alever_at_libero.it>:
>
> This was a nice explanation, since I'm a newbie in RAC...:)))
>
> Please, let me ask some help for a problem I'm facing with: one (or more?,
> it has been some weeks ago...) RAC node crashed and the other took its VIP;
> now I'd like to start the crashed node but it fails, obviously since the VIP
> depending nodeapp cannot start...
>
> I'm waiting my management to activate a Metalink support, but is there
> something I can do to in the meanwhile?
>
> Many thanks,
>
> Alessandro
>
> ---------- Initial Header -----------
>
> From : oracle-l-bounce_at_freelists.org
> To : oracledbaquestions_at_gmail.com
> Cc : oracle-l_at_freelists.org
> Date : Thu, 10 Jul 2008 09:15:41 -0500
> Subject : Re: Oracle RAC and VIPs
>
>
>
>
>
>
>
> >The basic gist is this:
> > The VIP is a cluster resource managed by the clusterware. Depending on
> >your OS , you can see it running as a VIP under your public network NIC.
> >(ifconfig -a on Linux). What happens in a node failure is that the
> >clusterware brings that VIP resource up on another node so that when
> clients
> >attempt connects to that IP, the 'failure' is detected right away and the
> >client can use the next address in the tnsnames.ora entry (or jdbc url, or
> >whatever).
> >
> >Try it out sometime. take a node node, use srvctl to see where the vips
> are
> >running and look at the ifconfig to see as well.
> >
> >On Thu, Jul 10, 2008 at 8:30 AM, Dba DBA <oracledbaquestions_at_gmail.com>
> >wrote:
> >
> >> I have installed Rac. I know how to create a VIP. I don't understand why
> >> this works. I also don't undertsand why TAF works.
> >>
> >> I am connected to node 1, how am I on the fly connected to node 2 if
> node 1
> >> goes down.
> >>
> >> Again, I know the functionality, I just don't know how it works under
> the
> >> covers.
> >>
> >> Can anyone help me out with this?
> >>
> >
> >
> >
> >--
> >Bradd Piontek
> >Twitter: http://www.twitter.com/piontekdd
> >Oracle Blog: http://piontekdd.blogspot.com
> >Linked In: http://www.linkedin.com/in/piontekdd
> >Last.fm: http://www.last.fm/user/piontekdd/
> >
>
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>
>
>

-- 
______________
Atenciosamente
Waldirio
msn: wmp_at_gmail.com
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Received on Thu Jul 10 2008 - 11:26:15 CDT

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