Re: Imported Restore with TSM and 2 engines with same DBSERVERNAME
Posted in 2009
Yes. :)
Only, you have to find the actual number
(logical log unique ID) and pass it on the
command line to the "onbar -r -l -n <#>"
command.
Regards, Martin
--
Martin Fuerderer
IBM Informix Development Munich, Germany
Information Management
IBM Deutschland Research & Development GmbH
Chairman of the Supervisory Board: Martin Jetter
Board of Management: Erich Baier
Corporate Seat: Boeblingen, Germany
Reg.-Gericht: Amtsgericht Stuttgart, HRB 243294
informix-list-bounces@iiug.org wrote on 11/06/2009 04:51:23 PM:
>
> Martin,
>
> Thanks for the reply.
>
> Can I avoid this query by object_name by instructing the restore to stop
at
> the last known logical log in the ixbar file?
>
> onbar -p
> onbar -r -l -n <last logical log in ixbar>>
> Thanks,
>
> Andrew
>
>
> ----- Original Message -----
> From: "Martin Fuerderer" <MARTINFU@de.ibm.com>
> To: "Andrew Ford" <aford@networkip.net>
> Cc: <informix-list@iiug.org>; <informix-list-bounces@iiug.org>
> Sent: Friday, November 06, 2009 9:35 AM
> Subject: Re: Imported Restore with TSM and 2 engines with same
DBSERVERNAME>
>
> > Hi,
> >
> > yes, ON-Bar uses the CopyID fields (high and low)
> > to ask the SM for backup objects, normally. This is
> > why this CopyID info is diligently kept in the sysutils
> > database and the ixbar-file (for cold restore scenarios).
> >
> > But I say "normally", because there is an exception:
> > After ON-Bar has restored dbspaces and all
> > applicable and "known" (by ixbar-file/sysutils info)
> > log file backups, there can be situations where
> > ON-Bar asks the SM "whether there are more log
> > file backups to restore". This is to catch any log file
> > backups that were actually done but for some reason
> > are not listed in sysutils or ixbar-file. In this case
> > ON-Bar (obviously) does not know the CopyID of
> > such possibly existing objects. And the query to the
> > SM is done by "object name" ...
> >
> > You can utilize ON-Bar tracing (set BAR_DEBUG
> > sufficiently high, e.g. to 6, and BAR_DEBUG_LOG,
> > both parameters in the onconfig file) to see, which
> > fields ON-Bar uses to query the SM and whether
> > there can be any ambiguity in your specific
> > scenario ...
> >
> > Regards, Martin
> > --
> > Martin Fuerderer
> > IBM Informix Development Munich, Germany
> > Information Management
> >
> > IBM Deutschland Research & Development GmbH
> > Chairman of the Supervisory Board: Martin Jetter
> > Board of Management: Erich Baier
> > Corporate Seat: Boeblingen, Germany
> > Reg.-Gericht: Amtsgericht Stuttgart, HRB 243294
> >
> > informix-list-bounces@iiug.org wrote on 11/06/2009 04:14:06 PM:
> >>
> >> When performing a cold restore will onbar ask TSM for the unique
storage
> >
> >> manager object by supplying the copyid_hi and copyid_lo fields from
> > columns
> >> 7 and 8 in the ixbar file?
> >>
> >> If so, that makes a lot of sense and would explain how onbar/TSM
> >> knows which
> >> /engine1/engine1/rootdbs/0 file is needed for the restore (because we
> > have
> >> two, the one I want to restore from production and the one from a
backup
> > of
> >> the test system).
> >>
> >> Am I right on this? Also, can there still be problems backing up
> > objects
> >> from two engines with the same name to TSM?
> >>
> >> Thanks,
> >>
> >> Andrew
> >>
> >> ----- Original Message -----
> >> From: "Andrew Ford" <aford@networkip.net>
> >> To: <informix-list@iiug.org>
> >> Sent: Friday, November 06, 2009 7:15 AM
> >> Subject: Imported Restore with TSM and 2 engines with same
DBSERVERNAME> >>
> >>
> >> > IDS 10.00.UC5
> >> >
> >> > I have a production Informix engine with a DBSERVERNAME of engine1
> > running
> >> > on server1 backing up to TSM and I have a test Informix engine with
a
> >> > DBSERVERNAME of engine1 running on server2 backing up to TSM. Both
> >> > instances have SERVERNUM set to 1.
> >> >
> >> > Does anyone know if there will be any issues with performing an
> > imported
> >> > restore of the production engine1 to the test engine running on
> > server2?
> >> >
> >> > I'm wondering how onbar knows to ask TSM for the right restore
files
> > if
> >> > the
> >> > rootdbs level 0 backup files for test and production both look like
> >> > /engine1/engine1/rootdbs/0
> >> >
> >> > Can there be other issues with this configuration? Could running
> > onsmsync
> >> > on the test engine incorrectly expire logical log backups for the
> >> > production
> >> > engine in TSM? Would giving the test engine a different SERVERNUM
fix
> >
> >> > this?
> >> >
> >> > Thanks in advance,
> >> >
> >> > Andrew
> >> >
> >> > _______________________________________________
> >> > Informix-list mailing list
> >> > Informix-list@iiug.org
> >> > http://www.iiug.org/mailman/listinfo/informix-list
> >>
> >> _______________________________________________
> >> Informix-list mailing list
> >> Informix-list@iiug.org
> >> http://www.iiug.org/mailman/listinfo/informix-list
> >
>
> _______________________________________________
> Informix-list mailing list
> Informix-list@iiug.org
> http://www.iiug.org/mailman/listinfo/informix-list