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Sheesh, that's a pretty extreme setup to have to go to just because of Mgt
Central choking on something and damaging those collections! (not
criticizing, just observing...) IBM should be able to resolve the Mgt
Central/SQL oriented issue at hand rather than you needing to go to such
measures just to get a full save done! I would think you could escalate
this one pretty well and get a fix in light of the hoops you're needing to
jump through to facilitate something as basic as a full save.
rob@xxxxxxxxx
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08/25/2005 03:54 cc
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Subject
RE: RCLSTG (Was: Preventative
Please respond to Maintenance For AS400)
Midrange Systems
Technical
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<midrange-l@midra
nge.com>
<snip>
Historically, it has seemed like if you do them regularly they don't
take as long.
<snip>
I don't find that to make a difference.
Here's a catch22. We run the RCLSTG before the saves to avoid a save
crashing because of damaged objects. (Management central is really bad at
creating damaged collections.) However an object will not be marked as
damaged prior to the first attempt to save it.
The scenario. System is brought down to restricted state. Unbeknownst to
us we have yet another damaged *MGTCOL. Doing a DSPOBJD would not have
the damaged flag set yet. Full RCLSTG is run. Full system save is run.
Crashes when we hit the damaged *MGTCOL. At this time the DSPOBJD should
now have the damaged flag set.
This is one of the reasons why Al Barsa recommends doing a full save
immediately upon a full system restore. Right Al? It's bitter medicine
to swallow because it significantly increases your downtime in one of your
most stressful situations.
Now we do a SAVOBJ of all objects in QMGTC2 to a save file and delete any
damaged ones prior to the RCLSTG. What a pain in the bum.
Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com
"Jones, John \(US\)" <John.Jones@xxxxxxxxxx>
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Please respond to
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To
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cc
Subject
RE: RCLSTG (Was: Preventative Maintenance For AS400)
We run them as needed; maybe about every 14-18 months normally. Maybe
also in front of an upgrade, but not necessarily. The last one on our
730, in June, with 65 17GB drives at about 45% took 1 hour 40 minutes.
Our dev/DR box last did one in June of 2003; at that time it would have
beena 720 with 30 17GB drives and (guessing) 35-40% full. That RCLSTG
took 1 hour 9 minutes.
Our 570, installed late last year, has yet to do an RCLSTG.
Historically, it has seemed like if you do them regularly they don't
take as long.
Scott, yours is the first day+ reclaim I've heard about since the white
box days.
For those who don't know, DSPDTAARA QRCLSTG gives the starting and
ending date & time of the last RCLSTG along with the then-OS release,
system name, and serial number.
At a former employer, we havd a D10 or D20 with 4 drives. It was not on
power protection as it was just a small test box. It eventually ran out
of DASD & locked up. As part of the recovery process we RCLSTGed it.
Some hours later it finished and the DASD usage had dropped to 35%.
--
John A. Jones, CISSP
Americas Information Security Officer
Jones Lang LaSalle, Inc.
V: +1-630-455-2787 F: +1-312-601-1782
john.jones@xxxxxxxxxx
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
ChadB@xxxxxxxxxxxxxxxxxxxx
Sent: Thursday, August 25, 2005 1:44 PM
To: Midrange Systems Technical Discussion
Subject: Re: RCLSTG (Was: Preventative Maintenance For AS400)
Wow... that's the type of RCLSTG horror story i've rumours of, but never
heard any specifics about! I'm wonder how common these types of RCLSTGs
really are... i'm betting Larry, Al, and some of the others might have
some idea...
I've always been lucky to end up with the 2-4 hour ones.
"Ingvaldson,
Scott"
<SIngvaldson@guid
To
eone.com> <midrange-l@xxxxxxxxxxxx>
Sent by:
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Subject
RCLSTG (Was: Preventative
Maintenance For AS400)
08/25/2005 02:33
PM
Please respond to
Midrange Systems
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Discussion
<midrange-l@midra
nge.com>
I was always in the "run a RCLSTG before very upgrade" camp, but we just
had a bad experience with our last RCLSTG. We're getting ready to
upgrade V5R2-->V5R3 on an 810 with 4GB main storage, 225 GB internal
DASD at 66% and 565 GB fiber-attached shark external DASD at 69%. The
last RCLSTG was run two years ago and took about two hours. We haven't
had any system crashes in this time, however the external DASD was added
after that and has about 7M documents stored on it. I SWAGed a
guesstimate of 8 hours and requested 24 hours of downtime to run the
RCLSTG.
The first part of the RCLSTG took about 24 hours. (to get to 100%) Next
it sat at message CPI8218 - Directory recovery in progress for about 10
hours before going on to message CPIA916. After determining that we
were going to miss our SLA Monday morning the boss ordered an abort. It
only took about a minute to end after an ALT SYSREQ 2 and then I did a
RCLSTG *DBXREF, which only ran about 6 minutes. Then I IPLed (B-N) and
all looked normal, a *FULL restart went very quickly.
There were 12 objects in QRCL: 2 data queues and 9 user spaces beginning
with Q, and 1 file (EKDDSPOBJD, which may have been a WAF temp file as
it no longer exists or seems to be needed.) There were no /QReclaim or
/QOpenSys/QReclaim directories.
The bottom line is that it is unlikely that we will run a Reclaim
Storage again, at least not until we have an HA environment with a
backup production LPAR.
Regards,
Scott Ingvaldson
iSeries System Administrator
GuideOne Insurance Group
-----Original Message-----
date: Thu, 25 Aug 2005 11:27:03 -0400
from: "Doug Hart" <DougHart@xxxxxxxxxxxx>
subject: RE: Preventative Maintenance For AS400
I work at a large (8 systems/23 partitions) iSeries datacenter and they
have not done a RCLSTG in well over 10 years.
They simply say that they can't be down that long. They also feel that
since they replace machines on about 3 year cycles they are never that
over due for the cleanup. I'm not totally in agreement but they run OK.
I if you run RTVDSKINF then PRTDSKINF *SYS look down the report for the
line 'Storage affected by RCLSTG'. It should show the impact of objects
to recover/cleanup.
--
Doug Hart
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