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IDS Forum

Re: Identical Instances Same Server

Posted By: Informix DBA
Date: Thursday, 2 June 2011, at 12:07 p.m.

In Response To: Re: Identical Instances Same Server (Mark Jamison)

Mark,

Yes SDS was already mentioned. Though I wanted to be able to do 2 distinct
restores of the same original Informix instance and have both unrelated
restores as distinct instinces on the same server. Though mostly people
already replied that they do not think there is a way to do it.

Part of my thought (which I realize I didn't mention before) was that since
we use soft links and each Informix chunk really points to a different raw
device on some storage system that somehow based on some environment
settings I could manage a tweak. Though I don't see a way to do this
either. I may use either the zones suggestion or use the redirected restore
and dynamically remap the chunks of the 2nd instance during the onbar
restore.

--David

On Wed, Jun 1, 2011 at 4:28 PM, Mark Jamison <majp51@me.com> wrote:

> Forgive me if someone has already mentioned, but what about SDS?
>
> Or are you wanting the data to change between the instances after the
> restore?
>
> Sent from my iPad
>
> On Jun 1, 2011, at 2:52 PM, Informix DBA <in4mixdba@gmail.com> wrote:
>
> > Bruce, Art,
> >
> > Thank you for the idea of uzing Zones. Yes we also use zones for having
> > multiple instances and servers on one physical SUN server. Great minds
> > think alike. That was actually my first suggestion and the UNIX sys-admin
> > group pushed back saying I should first try and find a way to do it in on
> > one server - i.e. one less zone/server for them to maintain :-)
> >
> > --David
> >
> > On Wed, Jun 1, 2011 at 2:27 PM, Bruce Simms <Bruce.Simms@talx.com>
> wrote:
> >
> >> David.
> >>
> >> Using the Informix zones will not require use of relative pathing we do
> >> this
> >> in our dev. Environments run as many as 8 zone on a single sun/solaris
> box
> >> as
> >> you are looking to do. You will want to use non-global zones so each
> zone
> >> can
> >> have the same device names each having it's own I/P for that zone.
> >>
> >> Bruce Simms
> >> Data Base Services
> >> TALX, Provider of Equifax Workforce Solutions
> >> 2330 Ball Drive
> >> St. Louis, MO 63146
> >>
> >> Phone (314) 214-7703
> >> FAX (314) 983-3238
> >> bsimms@talx.com
> >>
> >> -----Original Message-----
> >> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
> >> Informix
> >> DBA
> >> Sent: Wednesday, June 01, 2011 1:16 PM
> >> To: ids@iiug.org
> >> Subject: Re: Identical Instances Same Server [23893]
> >>
> >> Thank you all for the idea of using relative chunk names. The challenge
> is
> >> that the original instance does not use relative paths so I don't think
> I
> >> would be able to use that now.
> >>
> >> I also didn't want to do the redirected restore option of renaming the
> >> chunks because then I would end up with different chunk names on each
> >> server.
> >>
> >> I guess I was "dreaming" of something that doesn't exist yet :-)
> >>
> >> Have a great day,
> >>
> >> --David
> >>
> >> On Wed, Jun 1, 2011 at 11:52 AM, Hrvoje Zokovic
> >> <hzokovic.iiug@gmail.com>wrote:
> >>
> >>> Only if you use relative chunk names:
> >>> ../root_dbs
> >>> ../log_dbs
> >>> ....
> >>>
> >>> which is _REALLY_ danger and not recommended
> >>> or
> >>> ask Chuck Norris I'm sure he can have two instances you are asking :o)
> >>> HTH
> >>> Hrvoje
> >>>
> >>> On 01.06.2011. 16:18, Informix DBA wrote:
> >>>> Hello,
> >>>>
> >>>> We are running Informix 11.50.FC6 on Solaris 10. I am wondering if it
> >> is
> >>>> possible to have identical instances on the same UNIX server up at the
> >>> same
> >>>> time. For example, we have 1 production server and would like to use
> >>> onbar
> >>>> (without renaming chunks on the restore) to do 2 restores to a second
> >>>> server. So the end product would be 2 live restored instances on the
> >> same
> >>>> server. The challenge is that both instances would need to have
> >> identical
> >>>> chunk paths and names - exactly the same as it exists on the original
> >>>> Informix instance. Is there any way to accomplish this? Chunk names on
> >>> the
> >>>> original server are something like:
> >>>> /usr/informix/root_dbs
> >>>> /usr/informix/log_dbs
> >>>> /usr/informix/chunk_1
> >>>> /usr/informix/chunk_2
> >>>> /usr/informix/chunk_3
> >>>>
> >>>> etc...
> >>>>
> >>>> Any ideas and help would be greatly appreciated,
> >>>>
> >>>> David
> >>>>
> >>>> --bcaec54309049492fb04a4a731e1
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>
> >>
> >>
> >
>
> *******************************************************************************
> >>>> Forum Note: Use "Reply" to post a response in the discussion forum.
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >
>
> *******************************************************************************
> >>> Forum Note: Use "Reply" to post a response in the discussion forum.
> >>>
> >>>
> >>
> >> --bcaec54309044565fa04a4aa810c
> >>
> >>
> >>
> >>
> >
>
> *******************************************************************************
> >> Forum Note: Use "Reply" to post a response in the discussion forum.
> >>
> >>
> >>
> >>
> >
>
> *******************************************************************************
> >> Forum Note: Use "Reply" to post a response in the discussion forum.
> >>
> >>
> >
> > --bcaec51dd19f45569304a4abdd36
> >
> >
> >
>
> *******************************************************************************
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--bcaec51ddbe5d3daed04a4bcd352

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