RE: Node in a 2 cluster RAC environment keeps failing over
- From: laura pena <lizzpenaorclgrp@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 23 Mar 2004 16:10:04 -0800 (PST)
Thanks Scott,
Passing on the message.
--- Scott <oraracdba@xxxxxxxxx> wrote:
> Laura, My understanding per Veritas is that this is
> not best practice. Veritas round robins through the
> cards and the slower card could cause problems.
>
> I have implemented Vertias successfully but no site
> I
> have done has had different card speeds. I did one
> site with 2 1G cards and 1 100Mb card and we had
> problems. They remove the slower card and the
> problems
> went away.
>
> I have seen some Veritas bulletins on disabling
> fastpath but I don't remember under what conditions.
> This may have been it but I don't recall.
>
> Scott
>
>
>
> --- laura pena <lizzpenaorclgrp@xxxxxxxxx> wrote:
> > Wow someone who has heard of this.
> >
> > Yes, we have our interconnects set to etherfp.
> > LLT link information:
> > Link Tag State Type Pri SAP
> MTU
> > Addrlen
> > Xmit Recv Err
>
> > LateHB
> > Broadcast
> > 0 eri0 on etherfp hipri
> > 0xCAFE 1500 6
> > 261840450 240300348 0
>
> > 89
> > FF:FF:FF:FF:FF:FF
> > 1 ce1 on etherfp hipri
> > 0xCAFE 1500 6
> > 261914713 240332338 0
>
> > 91
> > FF:FF:FF:FF:FF:FF
> >
> > we have 2 interconnects but they are of differnts
> > speeds:
> > set-node VLDBN1
> > set-cluster 10
> > link eri0 /dev/eri:0 - ether - -
> > link ce1 /dev/ce:1 - ether - -
> >
> > I believe ce1 is the 2 gigabit
> > and eri0 is the 100M
> >
> >
> > This setting was done by our SA. We do have a ce0
> > which is another 2 gigabit, but our SA wants to
> > leave this for public connection. Do have a
> similar
> > setup?
> >
> >
> > So if I understand we should try setting
> > set-nofastpath 1 in our /etc/llttab so it will use
> > the slower connection to perform a heartbeat
> check?
> >
> >
> > Thanks so much for responding.
> >
> >
> > -Lizz
> >
> >
> >
> >
> >
> > Lee Jenkins <lee.jenkins@xxxxxxxxxxxxxxx> wrote:
> > Hi Lizz,
> >
> >
> > I posted this response on oracle-l, but it doesn't
> > seem to have appeared.
> > On a customer of ours 3 node cluster VCS v3.5
> > (HP-UX), we had to set "set-nofastpath 1" in
> > /etc/llttab so as to force the heartbeat to
> operate
> > at 100Mhz. Have you got 2 heart beat
> interconnects?
> > i.e. redundancy?
> >
> > You can get stats by running lltstat, which shows
> > data volumes and errors.
> > You can run lltstat -l to check the setting of
> > fastpath. "ether" means fastpath is disabled,
> > "etherfp" means enabled.
> > Regards,
> > Lee
> >
> >
> > Lee Jenkins
> > RemoteDBA
> > www.remotedba.co.za
> > Tel: 011 447 0533
> > Fax: 011 447 0533
> > Cell: 083 408 0857
> >
> >
> >
> > Do you Yahoo!?
> > Yahoo! Mail - More reliable, more storage, less
> spam
>
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