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  2. MIDRANGE-L
  3. March 2002

RE: Remote journals and APYJRNCHG

Luc,

yes, I would be interested in your code. However, I'm still very much in the
dark regarding what it does. I'm after an entry-level replication slotion
(I'm only interested in full recovery on the remote site in case the primary
server goes down). I can see how to do it with remote journals, but it looks
like to be able to run APYJRNCHG I need to create a "local" journal on the
remote site and periodically SAVRST remote journal receivers to the local
journal library. If you can suggest a better way, I'm all ears.

Lo

-----Original Message-----
From: Caura [mailto:caura@village.uunet.be]
Sent: 14 ????? 2002 ?. 9:25
To: midrange-l@midrange.com
Subject: Re: Remote journals and APYJRNCHG


Lo,

SavRst might be an option.

But, instead of the SAVRST , creating a -real- remote journal, just takes
the command,
and the replication is continuous, even if you don't exploit the journal on
the remote site.
Applying the remote journal at the source after re-transfer is possible
either way.

Only, if your source system goes down, you can only apply the journaled
changes after the problem is resolved and the system is in the air again.
- and the copy of the journalreceivers to the source system is done-
Then you should be aware that an APYJRNCHG might take quite some time (maybe
longer then a restore of a complete library?).

I can give you the code I use -as a basis for open source, as you mentioned
at first? -.
Their are some things to keep in mind:
-, looking over it, I realise the code leans on a bunch of everyday little
routines that all together are difficult to include for the sake of
completeness .
- the code somehow is optimized on our naming conventions, although this
should be of minor concern.

Luc



----- Original Message -----
From: "Raikov, Lo" <Lo.Raikov@MISYS.COM>
To: <midrange-l@midrange.com>
Sent: Wednesday, March 13, 2002 1:26 AM
Subject: RE: Remote journals and APYJRNCHG


> Luc,
>
> I don't want to write this exit program, that's the point. However, there
is
> a solution, although it is not exactly seamless: I simply SAVRST the
journal
> from the source to the remote system and in case of the first system crash
> restore accumulated remote journal receivers into the source journal
> library. After that APYJRNCHG works if I specify the correct range of
> receivers on the command.
>
> Lo
>
> -----Original Message-----
> From: Caura [mailto:caura@village.uunet.be]
> Sent: 13 ????? 2002 ?. 8:12
> To: midrange-l@midrange.com
> Subject: Re: Remote journals and APYJRNCHG
>
>
> Lo,
>
> you can use the RCVJRNE command to receive the JournalEntries on a remote
> Journal, just as you can on a local journal.
>
> We use it to keep backup libraries of remote systems.
> The exitprogam of the RCVJRNE command can do anything you specify.
>
>
> Luc
>
> ----- Original Message -----
> From: "Raikov, Lo" <Lo.Raikov@MISYS.COM>
> To: <midrange-l@midrange.com>
> Sent: Tuesday, March 12, 2002 1:41 AM
> Subject: RE: Remote journals and APYJRNCHG
>
>
> > Ken,
> >
> > could you be more specific please? How can I recover on the source
system
> > using remote journal receiver backups? These receivers would not attach
to
> > any other journal but the initial remote journal, or am I wrong?
> >
> > Lo
> >
> > -----Original Message-----
> > From: Graap, Ken [mailto:keg@nwnatural.com]
> > Sent: 12 ????? 2002 ?. 8:42
> > To: 'midrange-l@midrange.com'
> > Cc: 'spanner@ihug.co.nz'
> > Subject: RE: Remote journals and APYJRNCHG
> >
> >
> >
> > >contortions for the restoring back to the original system scenarios
> border
> > >on the ridiculous unless you think that maybe IBM didn't want to kill
the
> > >businesses based on selling replication solutions.
> >
> > Come on Evan .... A lot of people use remote journaling for recovery
> > purposes, not just replication.
> >
> > In a recovery scenario, you would recover the source system, restore
> remote
> > journal receivers to the recovered source system and apply journal
changes
> > to recover your data to the point of failure....
> >
> > I wouldn't call that ridiculous.
> >
> > The point of remote journaling in this case is to make sure your
journaled
> > transactions are immediately relocated to a remote system which is
> separated
> > from your source system.
> >
> > regards,
> >
> > Kenneth
> >
> > ****************************************
> > Kenneth E. Graap
> > IBM Certified Specialist
> > AS/400e Professional System Administrator
> > NW Natural (Gas Services)
> > keg@nwnatural.com
> > Phone: 503-226-4211 x5537
> > FAX:    603-849-0591
> > ****************************************
> >
> >
> > -----Original Message-----
> > From: Evan Harris [mailto:spanner@ihug.co.nz]
> > Sent: Monday, March 11, 2002 11:19 AM
> > To: midrange-l@midrange.com
> > Subject: RE: Remote journals and APYJRNCHG
> >
> >
> > Kenneth wrote:
> >
> > >Normally wouldn't you just restore the receivers back to the source
> system
> > >and run APYJRNCHG there?
> > >
> > >Kenneth
> > >Subject: Remote journals and APYJRNCHG
> >
> > <SNIP>
> >
> > >Is anybody aware of a tool that would enable you to apply journalled
> > changes
> > >registered in a remote journal? What I need is APYJRNCHG version that
> would
> > >be capable of running off remote journals.
> > >
> > >Lo
> >
> > Near as I can tell what Lo wants to be able to do is to replicate a file
> or
> > set of files onto a remote machine using the remote journalling
function.
> > In my opinion that's the most obvious use for remote journalling - the
> > contortions for the restoring back to the original system scenarios
border
> > on the ridiculous unless you think that maybe IBM didn't want to kill
the
> > businesses based on selling replication solutions.
> >
> > Leaving out the ability to apply remote journals on the target remote
> > journalling system cannot have been an oversight.
> >
> > If someone has code to read the receiver and apply the changes I would
be
> > interested as well. If it doesn't already exist would make a great Open
> > source project for the entire Iseries community.
> >
> > Regards
> > Evan Harris
> >
> >
> > _______________________________________________
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