Re: 10g RAC network failure behavior

You might try racdba_at_freelists.org since there are some RAC guys who hang out there.

regards
anand

BCB wrote:
> Hello,
>
> I recently I had a issue where I was testing the node resources like
> VIP, GSD and listener. I stopped the node resources and a side effect
> of this was that the related databases also went down. Because ASM went
> down.
>
> This is caused by the dependency on the VIP. So if there is a VIP
> problem everything where there is a dependency on the VIP will fail.
> This is untill 10.2.0.3 normal behaviour, altough I believe this is
> something you don't want.
> >From patch 10.2.0.3 this behaviour will change and the database/asm
> will not go down if there is a vip issue.
>
> If you use crs_stat -p <resourcename> you will see the dependencies
> parameter. the resource listed here are required before the resource
> can be started.
> To change this checkout the 10.2 manual it will explain how to update
> the profile.
>
> Hope this helps.
>
> Greetings,
> BCB
> www.rachelp.nl
>
> Keith wrote:
> > DA Morgan wrote:
> > > Keith wrote:
> > > > Metalink note 296878.1 describes the behavior starting with 10.1.0.4.
> > > >
> > > > DA Morgan wrote:
> > > >> Keith wrote:
> > > >>> Well, I just inherited a 2-node 10g RAC database on linux. I'm trying
> > > >>> to understand the network failure points, and what the behavior is
> > > >>> supposed to be from RAC.
> > > >>>
> > > >>> I just read a Metalink note stating that the DB and ASM are dependant
> > > >>> on the VIP, so a link or adapter failure on the public interconnect
> > > >>> would cause the instance to crash. Unfortunately there is no more
> > > >>> information as to why they are dependant on the the public
> > > >>> interconnect. Why crash the instance? What about locally connected
> > > >>> apps? Isn't there another hearbeat through the private interconnect?
> > > >>>
> > > >>> Also, what I haven't found is what happens when the private
> > > >>> interconnect fails? CSS is supposed to guard against the split brain
> > > >>> syndrome, but how? What happens?
> > > >>>
> > > >>> Any help would be apprecated from you RAC gurus.... and if you could
> > > >>> point me to the right documentation, that would be helpful too. I've
> > > >>> been perusing the CRS/RAC install and admin guides and I'm not finding
> > > >>> this information anywhere.
> > > >>>
> > > >>> Thanks in advance for your help.
> > > >> I've not seen anything in the documentation indicating a crash was an
> > > >> appropriate response. Node ejection and operating system reboots on the
> > > >> other hand are.
> > > >>
> > > >> Can you provide a link to the doc you are reading.
> > > >> --
> > > >> Daniel A. Morgan
> > > >> University of Washington
> > > >> damorgan_at_x.washington.edu
> > > >> (replace x with u to respond)
> > > >> Puget Sound Oracle Users Group
> > > >> www.psoug.org
> > >
> > > 1. Please do not top post.
> > >
> > > 2. I have not observed it with 10gR2.
> > > --
> > > Daniel A. Morgan
> > > University of Washington
> > > damorgan_at_x.washington.edu
> > > (replace x with u to respond)
> > > Puget Sound Oracle Users Group
> > > www.psoug.org
> >
> > 1. Ok. Sorry.
> > 2. Thanks for the feedback.
Received on Mon Sep 18 2006 - 04:15:30 CDT