Zaromil,
The PPRC commands to create a TrueCopy pair in the same Controller with a
loopback will work as long as you do not have Shadowimage installed.
With Shadowimage installed the controller will note the Primary and Secondary
have the same Storage Control Unit and will create a Shadowimage
Ron,
If you have HDS DASD there is a mainframe security feature that allows you
to mask logical volumes from specific LPARs. The idea is that if you get it
wrong in the OS the storage will stop you from shooting yourself in the
foot.
If you don't have HDS DASD then you may want to ask if your ven
Anton,
Who has replied to this thread from Singapore? I lived there a decade ago so
I'm wondering if I may know them.
Of course you don't mean me because you know I live in California.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
> Beh
Yeah, he confirmed he is Anton in an off-list response to me.
He signed off " Kerneels/Anton/GrandMa/Helpdesk" but he has also used Mohammed.
Seems some people take offense at his posts and pass them on to people he would
prefer never see them. Ipso facto the name changes.
> -Original Messa
David,
I'm glad you replied as I thought the single extent limitation did not sound
quite right. I'm pretty sure DFSORT also has its own B37 recovery for the
SORTWK as well, which would argue against a single extent limitation.
One behavior I have observed in the past is that DFSORT will only use
for, mate?
>
> On Fri, Apr 6, 2012 at 10:20 PM, Ron Hawkins
> wrote:
>
> > Chris,
> >
> > I took your advice and read this post, but then I took it to a higher
> > authority for validation. Yes, I googled "acronym USS.'
> >
> > Mate, I'm
; Such language! Contracted comestibles. So what does that mean? I looked
> up comestibles, and it means edible. I have no idea what contracted
edibles
> means.
>
> You get an A for humor though.
>
> Eric Bielefeld
> Sr. Systems Programmer
> IBM Global Services Division
Chris,
I took your advice and read this post, but then I took it to a higher
authority for validation. Yes, I googled "acronym USS.'
Mate, I'm sure I don't have to tell you that the internet holds the keys
that unlock all mysteries, and for this one I was horrified to find that for
all your hard
u know!
>
> Chris Mason
>
> P.S. Please take the trouble actually to read through the initial post of
the still
> active thread "A z/OS Redbook Corrected - just about!", Wed, 21 Mar 2012
> 07:34:55 -0500.
>
>
> On Fri, 6 Apr 2012 11:54:33 -0700, Ron Hawkins
John,
Frankly I've never understood Chris's problem with USS, except that he may
suffer from some sort of OCD reaction when he sees those letters.
We all know that USS stands for Unix System Services, and any other
employment of the acronym with the Mainframe community should spell out that
it is
e the DEFERW in Ron's example.
>
> HTH
>
> Peter
>
> -----Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
> Behalf Of Ron Hawkins
> Sent: Wednesday, April 04, 2012 12:35 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re:
Frank,
It is terrific that you are getting an improvement with BLSR.
I suspect you are using a vanilla copy of an example in the BLSR manual
similar to Peter Farley's example in his post. The problem is these parms do
not get the best performance from BLSR.
The missing value is DEFERW.
Shai,
Have you considered putting a stabilized version of MFNETDISK on the CBT?
I'm sure there are many people intrigued by the mechanics of how you make
this work, and this would allow community support for MFNETDISK by those
that are interested.
It worked for Linus Torvalds.
Ron
> -Origi
Re: [IBM-MAIN] Tapeless solution (IBM or Sun) Enterprise class
>
> W dniu 2012-03-29 06:31, Ron Hawkins pisze:
> > Darth,
> >
> > You said " HDS now sells the Falconstor's VTL instead."
> >
> > To be pedantic, that's not entirely true. We have a lot
Darth,
You said " HDS now sells the Falconstor's VTL instead."
To be pedantic, that's not entirely true. We have a lot of successful
Falconstore implementations on the dark side of the computer room, but for
mainframe you need something that virtualizes mainframe tape drives like
Luminex or Secur
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
> Behalf Of Anne & Lynn Wheeler
> Sent: Wednesday, March 21, 2012 9:05 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] megabytes per second
>
> ronjhawk...@s
PM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] DASD Mod9/Mod54
>
> With more data on each volume, your accesses to the single VTOC may delay
> accessing the datasets. When you had that data on Mod 9s, there were 7
> VTOCs to access that much data.
>
> On Tue, Mar
Bill,
It can also depend on where you are measuring the throughput:
Back end of the disk array - there is additional data to transfer
due to the encapsulation of EBCDIV within SCSI FBA blocks
FICON - It's a 10 bit byte, so divide the data rate by 8 bits. A 1Gb
channel is 1000MB/10
Chris,
I'm afraid sequential pre-fetch kinda of makes your point invalid for
sequential IO.
>
> A real 3390 (do they still exist?) even reading just a R0 from a track
will take as
> long as reading two 27K blocks of data from a track. A similar problem
exists
> with a 32K blocksize on a 3390.
Bob,
Then I can tell you that apart from the flattening of IO that I described,
there is nothing in the design and architecture of the USP-V that would make
a 3390-54 have less performance than 16 or so 3390-3 allocated on the same
parity group.
I'm afraid that it is the nature of your IO and no
7:02 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] IEFBR14
>
> On 3/18/2012 9:03 AM, Ron Hawkins wrote:
> > And finally, my memory may be a bit dodgy nowadays, but it's my
> > recollection that the EOF for empty datasets was introduced so that
> > DFSMShsm
Paul Gilmartin
> Sent: Sunday, March 18, 2012 10:30 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] IEFBR14
>
> On Sun, 18 Mar 2012 10:02:28 -0400, Gerhard Postpischil wrote:
>
> >On 3/18/2012 9:03 AM, Ron Hawkins wrote:
> >> And finally, my memory may be a bit
Bob,
On reason why 3390-54 may have higher response time than 16x3390-9 is that
the underlying volume is striped over less physical disk drives.
Ignoring wide striping, in most DASD volume layouts a single volume is
spread over two, four or eight disk drives. One 3390-54 will there have 2 to
8 ph
Scott,
I wasn't sure where the best place was in this thread to reply, as like all
IEFBR14 threads it has generated a lot of conversation for a program that
does virtually nothing, so I hose your original post. My two cents worth may
already have been covered in the many replies you already have.
Radoslaw
I agree that you wouldn't do this in production, but it is a perfectly valid
way to measure the throughput of a host channel.
Besides fanning out through an 8Gb switch to multiple FICON blades or
storage controllers, I would also suggest that you make sure the other port
on the 8S chann
IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] FICON channel utilization
>
> W dniu 2012-03-07 12:49, Ron Hawkins pisze:
> > Radoslaw,
> >
> > Actually RMF does not report channel utilization for FICON. It is
> > showing you microprocessor busy on the host channe
Radoslaw,
Actually RMF does not report channel utilization for FICON. It is showing
you microprocessor busy on the host channel board.
For the same MB/sec this metric will change depending on block size, data
length and whether zHPF is used.
You can quite easily saturate a host channel MP with
01ccf108$587ad8a0$097089e0$@net>, on 02/21/2012
>at 06:18 PM, Ron Hawkins < <mailto:ronjhawk...@sbcglobal.net>
ronjhawk...@sbcglobal.net> said:
>
> >You oversimplify the argument.
>
> As do you.
>
> >If you overwrite the data once, with anything,
Gil,
You oversimplify the argument.
If you overwrite the data once, with anything, it is gone. Forever and ever
and ever.
What remains is the possibility that the overwritten data can be ascertained
from the residual data on the edges of the track that come about because the
heads do not track o
Kees,
My recollection is the first WSC flash mentioning this on the 3090s was to
use CPENABLE(0,0), and it has switched between 10,30 and 0,0 at least twice
since then.
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/032f6e163324983085256b79
007f5aec/80154cc31e2cc90d86256fa9000766e7/$FILE/CPE
Thomas,
I don't believe this is true. There are files systems that require
pre-allocation of space.
In fact the use of a raw LUN is predefined space by definition. If you spent
some setting up arrays for large Open Systems servers where they want 120
different LUN sizes you see the similarity.
Sergio,
Select the sysout (S) for STC03526 and open it.
On the command line type PRT D and enter.
Complete the dataset details and enter.
When you return to the SYSOUT screen type PRT and enter.
Type PRT CLOSE and enter
You now have all the sysout in a dataset. This is all documented in the S
Joe,
In the past %TPI was a good indicator that IO was arriving for an LPAR but
it did not a logical CP dispatched by PR/SM to accept the interrupt. This
creates a "wall of interrupts" affect when the LCP is dispatched and started
finding pending interrupts with TPI process.
The recommendation fo
Thomas,
I've done this with DFSMS for a large, multi-country application where the
developers simply coded UNIT=SMALL, MEDIUM, LARGE and HUGE in the JCL.
The ACS routines took this UNIT value, along with some other logic and
assigned a standard space allocation using the appropriate DATACLAS.
Th
Mike,
I think that is only true for Iceberg, RVA and SVA. For HDS the VTOC is seen
as your data, secure from the storage controllers operating system and the
VTOC cannot be opened.
EMC, IBM and HDS thin provisioning methods allocate in pages (HDS parlance),
so if you write one block on one track
Kees,
Have you thought of putting your page datasets into Permacache (EMC) or DCR
(HDS).
This would give you true SSD performance right on the channel, which is
better than the SAS HDD emulation variety.
Ron
>
> Dead, until you stop the Execution Groups. For some reason this storage is
> then
Jim,
Thanks. That's exactly the sort of update I needed.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Jim Mulder
> Sent: Thursday, February 02, 2012 10:14 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Very Lage Page
All,
Another element of paging that has not been referenced is the ability to
handle all of the swap set size in parallel. If the swap set size is 120
pages then the old practice was to have at least four LOCALS so each thirty
page block of pages could be swapped-in in parallel. While swapping, li
Ken,
What about SAS?
If you only have the workstation variety you can still read and write
datasets directly to and from the mainframe using the "FTP" operator in the
FILENAME statement.
For example I read SMF concatenated SMF datasets from my laptop using the
following:
FILENAME SM
Gil,
I'm not sure I understand why there would be increased seek lengths on the
3390-9 SLED..
The avg seek of a 3390 as almost the same as a 3390-9, but intra-dataset
seek time was reduced by up to two thirds because the same size dataset used
one third of the platter radius.
Ron
> >
> With SL
Shmuel,
And a side bar - if the three 3390-3 are accessed from three different
LPARs, then consolidating them will mean zero impact without PAV because MDA
will allow concurrent IO to cache and disk.
Don't shoot me - it's an academic point.
Ron
> -Original Message-
> From: IBM Mainfram
Dennis,
If the thread count for the file is one then you won't have a problem.
You can calculate if you will have an IOSQ problem by calculating the
weighted average service time across your 27x3390-3 and applying Little's
Law to one tenth of the total IO rate.
If the weighted average service ti
Allan,
Unless you are using Aliases and a striped RAID topology.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Staller, Allan
> Sent: Monday, January 23, 2012 7:52 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Going
David,
The problem with a "real 3390-9" was rotation latency. IOSQ time was more of
a symptom then a feature.
The 3390-9 in IBM livery had three logical 3390 CKD tracks on a physical
track and spun at one third of the speed of the 3390-3. Average latency was
21ms, compared to 7ms on the mod 3s. N
Bill,
You said " If the shared control unit attached to this device is not an IBM
2105 SHARK (vintage ca. 2000), plug-compatible equivalent, or some successor
technology, then image A's I/O will not really be started until image B's
already started I/O ends."
Logical Device allegiance was introdu
David,
Firstly, I work for HDS.
I'm assuming you mean that the VSP is the storage in the non-mainframe dept,
and the aging HDS DASD is a 9980V or earlier controller.
In order for the VSP to support CKD volumes you will need to install a FICON
feature. This is two boards for a total of 16 FICON p
sub-pool it is assigned too).
>
> Russell Witt
> CA-1 L2 Support Manager
>
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of
> Ron Hawkins
> Sent: Friday, December 23, 2011 4:58 AM
> To: IBM-MAIN@bama.ua.edu
&
Russell,
Do you think that CA-Vtape would also be a good fit with large capacity
SAS/SATA array groups, or virtualized midrange storage arrays presented as
Mainframe volumes (3390A)?
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf
nframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Richard L Peurifoy
> Sent: Wednesday, December 14, 2011 8:21 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Is there an IBM program that will tell me what job
> created a DASD DSN?
>
> On 12/14/2011
Richard,
If the format 9 DSCB includes the date, time and jobname of the creating job
it should not be too hard to tie this to an SMF Type30 subtype 2 or 3 record
to get additional auditing information.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.
Or you may use one of the many flavors of asynch mirroring products with
multi-volume consistency that do not have a delay in the IO performance when
they transfer to the remote storage controller. XRC for example...
>
> So, better if you have the money to use remote mirroring which doing the
> s
Are you supporting multi-volume consistency?
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> shai hess
> Sent: Monday, December 12, 2011 9:47 PM
> To: IBM-MAIN@bama.ua.edu
> Subject: [IBM-MAIN] Fwd: case from DR in France.
>
> --
And even before IMS supported disk logging you were nuts not to use a product
like logplus or similar.
I've been away from the "real" world for a while, but my recollection is with
IMS Full Function the WADS will grow hotter as the physical logger (OLDS and
SLDS) max out or hit some contention.
had to explicit state on another release that we wanted to release
any
> space that did not have a dsorg in it.
>
> Ed
>
>
> - Original Message -
> From: Ron Hawkins
> To: IBM-MAIN@bama.ua.edu
> Cc:
> Sent: Friday, November 4, 2011 9:54 PM
> Subject:
How about just waiting for DFSMShsm to release it.
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Steve Thompson
> Sent: Friday, November 04, 2011 11:07 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] DSN NOT RELEASING OVER A
Jags,
Is there a chance that someone has written directly to the PDS without
specifying a member name?
I recall past posts have mentioned that this will corrupt a PDS.
A scan of your Type 14/15 SMF records may identify the culprit.
Ron
Ron Hawkins
Complex Test Lab - Mainframe, Technical
s (Was: SDSF
issue)
>
> > ... and don't give a toss where he posts his questions.
>
> Well, in total contrast, I do, assuming I spot them - in order that he may
> this
> time and next time and the time after that more accurately target his
> burgeoning queries.
>
> Chr
Do you honestly think that Gates is the author of the Thesaurus shipped with
Office? And as for defining my language, the English I speak and spell is
much closer to the real thing then the one you use. So what?
And so we get to your newest subject de jour; I am a sad character. Well
what did I do
Chris,
Funny that the US Thesaurus built into Windows lists "problem" as an
alternative for "issue." Why don't you take this up with Microsoft?
I have no problem understanding what Jags is saying, and don't give a toss
where he posts his questions.
Ron
>
> Incidentally, if we are dealing with
Steve,
I think you need to update your exchange rates. AUD$2200 is around US$2328.
Ron
>
> On 5/16/2011 2:04 PM, Wayne Bickerdike wrote:
> > They are charging $2200 for a two day workshop!
>
> That's Australian dollars, though. About USD 2077. Per
> person. Yup, a little pricey. If we had such
Shmuel,
Not really.
One could complain that there are some on the list that reply frequently,
but don't actually add anything of value to the subject when they do.
That works for short and long responses.
Ron
>
> So it's a Catch 22; you'll either complain that the reply is too short
> or th
Monika,
Provided it is a PDS you can FREEZE the library in LLA to avoid BLDL IO. Non
load module PDS-E will not be honored as FROZEN by LLA.
There will be no member caching of non load module PDS or PDS-E in VLF
unless it is a REXX or CLIST using EXEC, and you specify the class for
IKJEXEC in you
Ed,
> I consider that cheaper and a lot less cumbersome than VLF.
> I was at one place and they had a good size turnover of Sysprogs and none
of
> them even thought about VLF after applying fixes.
> There was a decent number of head scratching as to why fixes didn't fix.
[
What about IBM?
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Pearce, Colin E
> Sent: Thursday, May 12, 2011 12:05 PM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Trademarks (was: "Under z/OS Unix")
>
> And Ims, I
t;
> (1820 1845) command at 18:20 o'clock,IBMUSER.PS1 wasn't released
>
> My questios:
>
> 1.If I want to use Partial Release (Y) to release unused and
overallocated
> space, Must Auto Migrate be Y in SG?
>
> 2.Why wasn't IBMUSER.PS1 released? How many times
Jason,
I suspect that when you add a member to a PDS using ISPF that you are not
satisfying all of the conditions described in "USING DATASETS 3.2.5.4
Releasing Space." I leave to other to define which one it may be, or
disagree.
My guess is that when you use ISPF, the last operation before clos
Oops,
Should have said "I've seen 3380-3 used by customers..."
Ron
>
> I've seen 3390-3 used by customers to describe the same emulation on EMC.
> However, it may be that they were using the HDS term when communicating
with
> us. I've seen it frequently enough to feel that it is a common term a
A date format with the month first. Who would be that stupid?
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of
> David Alcock
> Sent: Saturday, May 07, 2011 6:45 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Dislike/Distrust of
s, not for others.
>
>
>
> CA-DISK used to be DMS when Sterling Software had it.
>
>
>
> Regards,
>
>
>
> Linda
>
>
>
> - Original Message -
> From: "Ron Hawkins"
> To: IBM-MAIN@bama.ua.edu
> Sent: Friday, May 6, 201
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Ted MacNEIL
> Sent: Friday, May 06, 2011 2:09 PM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Do we need to implement HSM
>
>
> Agreement?
[Ron Hawki
Ed,
I have no experience with DMS, but I did the same thing, and more, very
successfully with ACC/SRS from DTS.
I'd guess that DMS is still around, probably with a new name and a "CA-"
prefix :-)
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu
Ted,
3380-3 is HDS terminology for a standard size 3380 when you format the
Parity Group. It the value elected on the drop down box and creates 3339 cyl
volumes unless you choose to carve it up into custom sizes.
I've seen 3390-3 used by customers to describe the same emulation on EMC.
However, i
Ted,
There is an unofficial 3380-3, which is 3339 CYLS using a 47K track size.
It's common usage and size for existing 3380 emulation.
Which perhaps makes Ed's comment more current than I first thought.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama
Linda,
Without Guaranteed Space all except the first volume will only be candidate
volumes until the writing records to the first volume causes it to extend to
the second and subsequent volumes.
The case Ed described is that the dataset is empty, but it had extents across
multiple volumes, wh
Jason,
DCOLLECT provides a wealth of information of the type you seek.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> ibmnew
> Sent: Thursday, May 05, 2011 9:55 PM
> To: IBM-MAIN@bama.ua.edu
> Subject: [IBM-MAIN] How to monitor
Kirk,
UTE is an abbreviation for an Australian pick-up truck. If you use it in
this list as you suggest all the aussies will have no idea what you are
talking about.
Ron (with tongue firmly in his cheek).
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua
Ed,
> (with DFHSM) all the old datasets. The data was there for recall. Although
I
> did
> find a VSAM data set that was empty and it spanned 5 volumes and haddn't
been
> referenced in many many months. I archived it and clipped the volumes and
out
[Ron Hawkins] I'm a li
Jag,
The model designations are no longer of any importance. You can make a
volume any size you want. It doesn't matter if it is a 3390-99, 3390-86, or
3390-007.
If a volume is greater than 3339 CYL it is a 3390-9, but nothing actually
behaves any differently because of that. The MSR fields in ST
John,
I didn't think &MAXSIZE took multivolume into account. Isn't it just primary
+ (15 * secondary)?
I've often thought that compression products should come with a sampling
utility to read one CYL of a dataset and provide a compression report. This
could be used to isolate find the best compre
Shmuel,
>
> >I remember spending some time playing with CPU affinity trying to
> >keep the CPU bound jobs away from the AP
>
> Why?
>
[Ron Hawkins] Nice catch. I meant to say IO Bound Jobs.
Ron
-
Tom,
One consideration would be the bandwidth cost if you are doing remote copy
over long distances. Most network based channel extension uses compression,
and the compression rate of encrypted data is usually close to zero.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List
Jason,
In JCL the RLSE parameter is the same for a multi-volume DSORG=PS dataset as it
is for a single volume dataset.
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of
> ibmnew
> Sent: Thursday, April 21, 2011 3:26 AM
> To: IBM-MA
t;
> Ron, care to remind us of the modelling difference? It's been a while. :-)
>
[Ron Hawkins] Martin,
I'm calling in a lot of swapped out grey matter here, but if I recall
correctly with the AP you would not calculate a probability of a CPU being
busy as a function of the t
Martin,
Yeah, what he said :-)
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
Behalf Of
> Anne & Lynn Wheeler
> Sent: Wednesday, April 20, 2011 7:05 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: [IBM-MAIN] Dyadic vs AP: Was "CPU utilization
Ted,
Yes. I did.
Would it have been more appropriate if I added that dyadic processors
required revision of many of the methods that we applied to earlier models.
Would you use a capacity planning methodology for a 3033 AP when you model a
3090-200?
Ron
> -Original Message-
> From: IB
Ted,
There may well be, but I've only been reading them for the last twenty five
years myself. For my niche, most work prior to MVS/XA was updated soon after
its introduction because of the changes to IO path queuing and measurement
that XA ushered in around the time I started down this path.
Ron
Mike,
There's 30 years of Papers and discussions on how to do Capacity Planning
for MVS.
The answer is far more complex than the simplicity of your question.
Averages or peaks? What about percentiles and omission of outliers?
A quick Google shows there are courses (Guerilla Capacity Planning), m
What is "unit Hydra?"
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of
> Grillo Paul
> Sent: Wednesday, April 13, 2011 7:44 PM
> To: IBM-MAIN@bama.ua.edu
> Subject: [IBM-MAIN] Esoterics names for DB2 V8
>
> *Does anybody can help me abo
Mark,
I'm suitably impressed.
You can do this with some of the database reorg software, but they aren't
part of the base OS.
I can understand some of the OP's frustration now.
Ron
>
> If it was a file on a Linux system using LVM, I could move the physical
> extents that hold that file anywher
Michael,
You can move the volume with PPRC and use PDAS to point to the new location.
It's no different to using a volume manager to create a RAID-1 copy and then
deleting the old copy, providing you bought a volume manager with the OS.
But none of that will solve moving the file while it's open
es and which weren't. I did the conversion between
3380's
> and
> 3390's and of course the databases weren't marked by PSU so DFDSS moved
the
> databases and the outage was chalked up to the DB people as the data sets
were
> NOT movable.
>
[Ron Hawkins]
That mu
m to explicitly
> OPEN such a data set for output for cases where the file should contain
> 0 records, and unlike the old days the file is no longer in an undefined
> state until the first write after allocation.
> JC Ewing
>
[Ron Hawkins]
I think this comes back to what I think the
Shmuel,
> Oversimplified. A program could do dynamic allocation of the same
> dataset under a distinct ddname.
[Ron Hawkins]
Also oversimplified. The context of the OP is allocation of a NEW dataset. A
subsequent allocation of a new dataset through dynamic allocation as you
described requ
Radoslaw,
Nice catch. I was reading ATL and thinking TMM.
Ron
>
> Connecting hardware or interpreting "CKD" (it's tape, I know) data on PC
> could be a method.
>
--
For IBM-MAIN subscribe / signoff / archive access instructi
Saurabh,
You can see the storage group for a given volser in RMFPP reports and RMF II
online displays. RMF II would be DEV V(smsvol).
Ron
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of
> SAURABH KHANDELWAL
> Sent: Thursday, April 07
et?
> Why do we must use DSORG=PS in the JCL?
> For LRECL=0 and BLKSIZE=0
> I submit the following JCL
> //ALOCHSKP EXEC PGM=IEFBR14
> //MESSAGE DD DSN=ABSP.CEB.TEST7,DISP=(NEW,CATLG,DELETE),
> //UNIT=3390,SPACE=(4096,(10,10)),DCB=PATTERN
> the PATTERN is allocted by the jc
Hal I have to agree.
The data written to the ATL on FICON channels will be CKD structure which is
encapsulated into SCSI FBA at some point between the FICON interface and
disk buffer. It's all SCSI after that.
To read the data on the mainframe tapes from Fibre Channel the ATL vendor
would likely
I'm not so sure. Based on what I think is Shmuel's logic, no JCL dataset is
allocated by a PGM because allocation occurs before PGM Fetch.
And we all agree that Open is different to Allocate. In your example the
program opens the file, but it was allocated well before the program loaded.
I guess
[IBM-MAIN] DATACLASS
>
> In <029501cbf09d$743f5370$5cbdfa50$@hawkins1...@sbcglobal.net>, on
> 04/01/2011
>at 11:48 AM, Ron Hawkins said:
>
> >The IEFBR14 example from the original post is one example of a
> >program that would allocate such a dataset.
>
> I
I'm not sure if I can help with your French. My mother tongue is Australian
but I also speak English, Canadian, New Zealandish, Singlish, and a bit of
Cebuano. I thought I spoke American, but no one here understands me.
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM
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