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IDS Forum

RE: ER server groups

Posted By: Paul Watson
Date: Tuesday, 13 May 2014, at 9:20 a.m.

In Response To: Re: ER server groups (Art Kagel)

I would also add that the engine will start without errors, at least in
11.7x, if you have the same server in multiple groups. But you will not get
the connectivity you expect :-)

Cheers
Paul

> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Art
> Kagel
> Sent: Tuesday, May 13, 2014 8:10 AM
> To: ids@iiug.org
> Subject: Re: ER server groups [33000]
>
> Andy:
>
> For the purposes of defining servers to ER each server's alias used for ER
> must be the only server in only a single group. So you will need 20 groups
> for the 20 servers. You can have 10 groups each listing the two paired
> servers using different DBSERVERALIAS names than the ER groups for those
> servers (ER gets flaky if you use the same alias in more than one group)
to
> use for clients to connect to as a failover group if you don't want to use
> Connection Manager for that purpose, but those groups are separate from
> the
> ER group for each server.
>
> Art
>
> Art S. Kagel, Principal Consultant
> ASK Database Management
>
> Blog: http://informix-myview.blogspot.com/
>
> Disclaimer: Please keep in mind that my own opinions are my own opinions
> and do not reflect on the IIUG, nor any other organization with which I am
> associated either explicitly, implicitly, or by inference. Neither do
> those opinions reflect those of other individuals affiliated with any
> entity with which I am affiliated nor those of the entities themselves.
>
> On Tue, May 13, 2014 at 7:30 AM, Andrew Grantham
> <agrantha@hotmail.com>wrote:
>
> > Informix V11.70.FC2
> >
> > All,
> >
> > I am looking for an example of multiple instances being defined with the
> > same
> > server group for Enterprise Replication. Is this possible?
> >
> > Also is there any performance improvement to using fewer server groups
> in
> > ER?
> >
> > A bit of background information may help out here. I am going to set up
an
> > update-anywhere environment between 2 machines. On each machine
> there are
> > 10
> > instances. Each instance will replicate to its corresponding instance on
> > the
> > other server. We cannot use HDR so it will be ER. At the moment each
> > instance
> > pair if you like is autonomous and does not rely on any other. So the
> > question
> > is what is the best way to define this? To have 10 seperate pairs ( and
20
> > seperate groups ) or to have 2 groups, one for all instances on each
> > server or
> > if you have any better ideas I am all ears.
> >
> > Regards
> >
> > Andy Grantham
> >
> >
> >
> >
> **********************************************************
> *********************
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> >
>
> --089e011609ccd2893304f947c6db
>
>
> **********************************************************
> *********************
> Forum Note: Use "Reply" to post a response in the discussion forum.

Messages In This Thread

  • ER server groups
    Andrew Grantham -- Tuesday, 13 May 2014, at 7:30 a.m.
    • Re: ER server groups
      Madison Pruet -- Tuesday, 13 May 2014, at 8:40 a.m.
    • Re: ER server groups
      Art Kagel -- Tuesday, 13 May 2014, at 9:09 a.m.
      • RE: ER server groups
        Paul Watson -- Tuesday, 13 May 2014, at 9:20 a.m.

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