RE: Listeners listening to multiple IPs

I tried doing this but had problems running two listener that listen on the same port number on two different IPs. One of the two did not want to start.

Djordje

> -----Original Message-----
> From: Stefan Jahnke [mailto:stefan.jahnke_at_d2vodafone.de]
> Sent: Tuesday, December 11, 2001 12:01 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: Listeners listening to multiple IPs
>
>
> Hi
>
> I did this (don't know wether it's documented or not), but somebody
> recommended to split it up into 2 listeners (1 for each interface) to
> have a better way of controlling the workload (especially
> with multiple
> instances).
> Made sense to me.
>
> Djordje Jankovic schrieb:
> >
> > Something I learned today, but haven't seen it documented
> anywhere and would
> > like to see whether anybody has come across it.
> >
> > We have a Sun server (call it oracle.acme.com). It came to life by
> > combining two machines (oracle1.acme.com and
> oracle2.acme.com). So now it
> > has two IP addresses: hme0: x.y.z.001 - from oracle1 and
> hme1: x.y.z.002 -
> > from oracle2. There are few databases there (some of them
> were on oracle1
> > some on oracle2) and one listener listening to all of them.
> >
> > If you configure listener.ora file so that HOST=x.y.z.001,
> or HOST=x.y.z.002
> > that listener listens to that ONE IP only. However, if you put
> > HOST=oracle.acme.com in listener.ora than it listens to all
> IPs (in netstat
> > -an you see that it is listening to "*.1521" instead of to
> > "oracle.acme.com.1521"). That would mean that oracle does
> not resolve DNS
> > at replaces it with IP but first checks whether this is the
> primary IP for
> > that box.
> >
> > So, once we have put HOST=oracle.acme.com, all the
> connections were OK
> > (coming from clients with tnsnames files that are pointing to old
> > oracle1.acme.com and oracle2.acme.com) Of course DNS was changed..
> >
> > Anybody has come across this undocumented feature ? Any
> explanation to that
> > ?
> >
> > Djordje
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: Djordje Jankovic
> > INET: djankovic_at_corp.attcanada.ca
> >
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> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Stefan Jahnke
> INET: stefan.jahnke_at_d2vodafone.de
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Djordje Jankovic
  INET: djankovic_at_corp.attcanada.ca

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).