RE: Data queue space

[neilp@xxxxxxxxxxx]

The one work answer is "Upgrade".
You're the author of your own misfortune.  It's long past the time you
should have gotten off V3R7, which is no longer supported by IBM.  Do you
still run Windows 3.1  on your PC ?    :-)

Neil Palmer         DPS Data Processing Services Canada Ltd.
                                             AS/400~~~~~
Markham,  Ontario,   Canada    ___________          ___  ~
Phone: (905) 474-4890  x303   |OOOOOOOOOO| ________  o|__||=
Cell.: (416) 565-1682  x303   |__________|_|______|_|______)
Fax:   (905) 474-4898          oo      oo   oo  oo   OOOo=o\
mailto:NeilP@DPSlink.com    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://www.DPSlink.com        AS/400e  The Ultimate Business Machine






"Alistair Rooney" <alistairr@tbsa.co.za>@midrange.com on 2000/08/02
09:46:48

Please respond to MIDRANGE-L@midrange.com

Sent by:  owner-midrange-l@midrange.com


To:   <MIDRANGE-L@midrange.com>
cc:

Subject:  RE: Data queue space


I'm so glad you touched on journaling with MQ. We are having a hellish time
with all MQ programs going into a lock wait for 10-30 minutes. This seems
to
be every time it does a journal detach. It's causing havoc with our
timings.
IBM say that there are PTFs available for V5 but we are on OS/400 V3.7 and
to run V5 of MQ we would need to upgrade to OS/400 4.n.

Do you know of any workaround. The journals are managed by MQ internals
which makes things a bit scary.

Alistair

-----Original Message-----
From: owner-midrange-l@midrange.com
[mailto:owner-midrange-l@midrange.com]On Behalf Of McCallion, Martin
Sent: 02 August 2000 12:37
To: 'MIDRANGE-L@midrange.com'
Subject: RE: Data queue space


> > Just to change the subject a little, has anyone tried using message
> > queues instead of data queues?  I've never used the product, but
isn't
> > the MQ product line based upon data exchange through Message Queues?
>
> There are different considerations using msgs, such as the need to
remove them yourself once they have been processed, performance
> overhead (data queues are much faster), etc., but it's certainly a
viable alternative.

MQSeries doesn't use AS/400 message queues, it has its own internal
"objects" called queues and channels (and some others).  Prior to
release 5.1, these were implemented by user spaces and user indexes.  As
of 5.1 files in the IFS are used (the change is because they've switched
to a common code base (and version numbering convention) with the other
platforms).

You don't have the data queue problems of continuous growth of queue
size  Prior to 5.1 there is some overhead of journal receiver
management, but it's mainly a matter of backing them up and deleting the
ones that aren't required online.  5.1 appears not to use journalling.

Cheers,

Martin.


--
Martin McCallion
Midas-Kapiti International
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Home: martin.mccallion@ukonline.co.uk

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