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-Original Message-
From: Michael Watkins
Sent: Sunday, August 30, 2020 6:00 PM
To: IBM Mainframe Discussion List
Cc: Michael Watkins
Subject: RE: Simple VSAM question on sizing INDEX component
The index component alone is 2.4 MB? 2,400,000/56664 = 43 tracks? Sure,
Allocate the index
More efficient in terms of fewer index LEVELs as Tony Thigpen may have been
getting at? I thought the number of LEVELs was contingent on the the size of
the file and the number of CI and CA splits the index component had endured
and not the allocation of contiguous space for the index
The index component alone is 2.4 MB? 2,400,000/56664 = 43 tracks? Sure,
Allocate the index component as 4 or even 5 cylinders primary and a single
cylinder secondary.
If the cluster has changed significantly over time, I might also run an IDCAMS
EXAMINE command:
EXAMINE NAME() INDEXTEST
A 'manual' tape library? Is this command being issued on the GUI for an EMC DLm?
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Edgington, Jerry
Sent: Wednesday, January 27, 2021 12:07 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: RMM/OAM/SMS
CAUTION: This email
"Will there be a impact to mainframe backup when there is a high backup volume
for open system ?"
I am employed by the Texas CPA where such a solution was implemented. We never
experienced any problems with contention. First, our z/OS mainframe necessarily
had its own MTree file structure on
as a scratch tape in the DLm.
Carl Swanson
Mobile:215.688.1459
Email: carl.swans...@verizon.net
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Michael Watkins
Sent: Thursday, March 4, 2021 11:25 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: EMC DLM over IBM VTL
You might want to explore IBM's 'SafeGuarded Copy' to see whether it meets your
needs.
A Red Paper called 'IBM DS8000 Safeguarded Copy (Updated for DS8000 Release
9.1)' was published in March of this year (REDP-5506-01)
-Original Message-
From: IBM Mainframe Discussion List On Behalf
#metoo
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
esst...@juno.com
Sent: Monday, January 3, 2022 3:56 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Looking for a manual on IRLM services
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On Fri, 5 Nov 2021 at 13:32, Michael Watkins <
032966e74d0f-dmarc-requ...@listserv.ua.edu> wrote:
> "if IBM is going to transition the Redbooks into something better"?
>
> It looks like IBM is transitioning to ibm.com/docs, where an isolated
> piece of doc
"if IBM is going to transition the Redbooks into something better"?
It looks like IBM is transitioning to ibm.com/docs, where an isolated piece of
documentation is given to you without any of the surrounding related
information. This is hardly better. The most expensive part of z/OS TOC is
Just a dumb question: Did your z13 have zEDC cards installed? They were
optional on the z13, but zEDC compression is included on the z15.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Chuck Kreiter
Sent: Thursday, July 22, 2021 3:34 PM
To:
Perhaps 'z/OS system installation and maintenance', P.9, is sufficient:
"The z/OS software- as supplied by IBM- is usually installed on a series of
disk volumes known as the system residence volumes (SYSRES). Much of the
flexibility of z/OS is built on these SYSRES sets. They make it possible
Yes, all DFSMShsm ASIDs in the HSMplex must be down. (All DFSMShsm ASIDs that
share control datasets and a journal are in the same HSMplex.) I would rename
the existing MCDS by appending the current date [either '.#22feb22' or
'.#22053' (Julian date) for today, for example] to the index and
seen it speed up
long-running HSM functions significantly.
Both extended addressability and RLS for HSM CDSs have been around for several
years.
On Tue, 22 Feb 2022 at 15:50, Michael Watkins <
032966e74d0f-dmarc-requ...@listserv.ua.edu> wrote:
Yes, all DFSMShsm ASIDs in the HSMple
I've always understood that SORTWKnn data sets could only reside on a single
volume, but a co-worker coded DATACLAS=PSE on SORTWKnn DD cards and, as the
DATACLASS dictated, 59 volumes were allocated to the SORTWKnn DD. Of course,
simply because volumes were allocated doesn't mean they were
From: Kim | BeMyApp
Sent: Tuesday, April 5, 2022 4:00 AM
To: Michael Watkins
Subject: IBM z16 Day SE Starts Soon!
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system.
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sets."
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Michael Watkins
Sent: Thursday, March 24, 2022 2:49 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Can SORTWKnn Data Sets Use More Than One Volume?
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Does the 'System Z Enthusiasts' Discord server require an individual
invitiation?
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Matt Hogstrom
Sent: Wednesday, August 30, 2023 11:02 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: With regrets, after many years I will
I've worked in this field for over 40 years and have met a few characters. The
work seems to attract them. They are sometimes cantankerous.
Suggestion: If someone's post annoys you, don't read their contributions.
I'll continue to follow the threads because even the abrasive people sometimes
Ha! When I was last looking for a job as a storage manager on the z/OS
platform, a recruiter approached me with a position where I'd be responsible
for renting out 10' x 10' storage units to people who'd already filled their
garages with belongings they could not part with.
-Original
Does anyone have a URL for the LINUX-390 list?
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Kirk Wolf
Sent: Tuesday, April 26, 2022 10:11 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Use of zCX
CAUTION: This email originated from outside of the Texas
BLSR is referenced on page 305 of 'Batch Modernization on z/OS' (July, 2012;
z/OS V1R9):
Implementing data in memory (DIM) techniques is a complex task, but one likely
to yield good results. It means exploiting appropriately the various software
facilities available to eliminate unnecessary
.05.2022 o 16:48, Michael Watkins pisze:
> Thanks for the history and a definitive word on BLSR. From your (and others')
> remarks, it seems obvious that BLSR has been supereceded by SMB. So why not
> just implement SMB?
>
> Doesn't SMB only work if the clusters whose b
Of
Michael Watkins
Sent: Thursday, May 19, 2022 9:48 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: IBM BLSR subsystem
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Thanks for the history and a definitive word on BLSR. From your (and others')
remarks, it seems obvious that BLSR has been supereceded by SMB. So why not
just implement SMB?
Doesn't SMB only work if the clusters whose buffers you want to manage are
defined as extended format? In contrast, BLSR
format and extended addressing. During the mock
production run, we were able to identify, and exclude the datasets that could
not be extended/extended. The list is quite small.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Michael Watkins
Sent: Thursday, May 19
Yes. Try this:
(1) ISMF option 6, ('Storage Group')
Select option 1 ('List')
Enter 'DELETE' as a line operator to the left of the storage group name
(2) ISMF option 7 ('Automatic Class Selection')
Select option 3 ('Validate') <= assumes the current ACS routines have
already
Does anyone have a .pdf of an old IBM redbook called 'System/390 MVS Parallel
Sysplex Batch Performance' (SG24-2557) that they'd be willing to share?
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z/OS DFSMSdfp Diagnosis Reference (GY27-7618-03) Fourth Edition, June 2003,
z/OS V1R3
Does anyone know whether there is a more recent edition of 'DFSMSdfp Diagnosis
Reference'? I can't find one and this seems pretty old...
--
DFSMSrmm/DLm guy here says:
The RMM scratch report that comes out of the housekeeping job RMMHSKP is when
needs to be sent to DLMSCR. Or if you choose another way to produce the report
it needs to match exactly. Below is the JCL EXEC card used to produce the
report.
//SCRATCHL EXEC
So QUNEW can function to 'reserve' volumes for datasets with very large primary
allocations, requests that might not be satisfied if free space was not
consolidated on the QUINEW volume?
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Mike Schwab
Sent: Thursday,
The installation where I'm employed has MVS/QuickRef installed, but we do not
currently use it to find uncataloged datasets.
Can you provide a sample of the batch job using MVS/Quickref to find all
uncataloged datasets? Preferably one that would employ a mask for volumes to
exclude, since
IBM says: 'Before z/OS V1R7, the HFS file system was the primary hierarchical
file system. As of z/OS V1R7, you can use any combination of HFS and zFS file
systems. Because zFS has higher performance characteristics than HFS and is the
strategic file system, you should migrate your HFS file
.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Michael Watkins
Sent: Tuesday, September 13, 2022 1:14 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: ADR971E RC 8
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To create a non-SMS-managed VSAM cluster with extended addressability, what is
required other than assigning a DATACLAS with column 27 (EXTENDED
ADDRESSABILITY) specified as 'YES'?
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Mark Jacobs
Sent: Tuesday, September
I hope I'm only stating the obvious, but back the volume up before you do
anything.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Jack Zukt
Sent: Monday, August 1, 2022 10:01 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Extending a VTOC
Thank you all for your
'DFSMS Managing Catalogs', V2R5, p.59: 'You can list catalog records using the
access method services LISTCAT command, or the ISMF line operator CATLIST.
CATLIST produces the same output as LISTCAT, but places the output in a data
set that can be browsed.'
'DFSMS Using the Interactive Storage
All mainframe-related questions are welcome as far as I know, but you might
have better luck on: MXG Software LIST
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Kenneth J. Kripke
Sent: Tuesday, November 22, 2022 12:25 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: SAS
I could be wrong, but I suspect that any information you get from the GUI will
simply tell you how much of the raw storage has been configured as volumes that
can be used by the operating systems connected to your DS8k. The GUI cannot
make sense of the data on the volumes. To the GUI, I think
See
https://www.ibm.com/docs/en/zvse/6.2?topic=SSB27H_6.2.0/fe6rf_optimizing_casize_disksizes.htm
A 3390 MOD-1 has 1,113 cylinders. Each 3390 cylinder has 15 tracks. Each 3390
track has 56,664 bytes.
1,113 x 15 x 56,664 = 946,005,480
There are 946,005,480 bytes in a 3390 MOD-1 disk drive. Or
Glenn Wilcock shared
https://public.dhe.ibm.com/eserver/zseries/zos/DFSMS/CDA/OA62318/Cloud_Object_Utility_Pub_updates.pdf
The document at this URL states: z/OS MVS Programming: Callable Services for
High Level Languages is updated to add a new chapter after 'Part 10: SMF
Services' as follows:
sion List On Behalf Of
Michael Watkins
Sent: Thursday, January 19, 2023 7:38 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: KMOD1 DS8k box
[CAUTION: This Email is from outside the Organization. Unless you trust the
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which can st
20, 2023, 7:42 PM Michael Watkins <
032966e74d0f-dmarc-requ...@listserv.ua.edu> wrote:
> Are you looking for the names of the datasets on the 3990 volumes that
> are being backed up? If you're taking 'volume level' backups with (for
> instance) ADRDSSU, the contents of th
DITTO/ESA V1R3 User’s Guide, SH19-8221
Does anyone have a .pdf copy of this document that could be emailed to me?
michael.watk...@cpa.texas.gov
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Why? As the article you posted notes : In 1982, the case was dropped by a
judgement ruling it "without merit." See:
https://www.nytimes.com/1981/02/15/business/us-vsibm.html which claims:
The trial began in May 1975. Before the outset, the Government estimated that
the presentation of its case
Are you looking for the names of the datasets on the 3990 volumes that are
being backed up? If you're taking 'volume level' backups with (for instance)
ADRDSSU, the contents of the entire volume will be put into one output DUMP
dataset and only the name of that full volume DUMP dataset will be
I'd guess there is no one that receives these emails who has an interest in
every topic discussed, whether those topics are in technical threads or more
the more 'off-topic' threads.
If a thread does not interest me, I simply ignore it. I find that works for me,
whether the thread is technical
It was an honor and a pleasure to work with you during the install of the
Dell/EMC Data Domain (DD9800) & Disk Library for the mainframe (DLm2100).
Your technical expertise and clear explanations were invaluable to the success
of the project, despite my clear preference for the IBM TS7700
It's a Microsoft communication product that includes video calling, instant
messaging and bulletin board features. And who knows what else.
But don't you have to be using the same Microsoft server to communicate with
someone else on Teams? My employer uses it for communication within the
There is a shop where the current philosophy is to not put on any maintenance
other than a PTF here and there if it is needed for a problem. But no RSU
maintenance. Instead of maintenance, the plan is to just reinstall z/OS and all
related products anytime they want to refresh the maintenance
What a BS 'survey'.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of Jon
Perryman
Sent: Tuesday, July 18, 2023 7:47 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Will z/OS be obsolete in 5 years?
CAUTION: This email originated from outside of the Texas Comptroller's email
Does anyone have a pdf copy of the IBM TotalStorage Redbook, 'Enhanced Catalog
Sharing and Management, SG24-5594' that they'd be willing to share?
I think it was originally published in 1999.
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Does anyone have a pdf copy of the IBM TotalStorage Redbook, 'Enhanced Catalog
Sharing and Management, SG24-5594' that they'd be willing to share?
I think it was originally published in 1999.
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'check announcement letters in new site'? Where is this new site with
'announcement letters'?
The move from easily-obtainable PDFs to the online 'knowledge Center' means
that retirement cannot come too quickly.
If I was more than a decade from retireing, I'd consider acquiring expertise on
Also, forgot to add: list the dataset and note the management class (MGMTCLAS).
This will tell you how DFSMShsm is managing the dataset and whether space is
routinely being released.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Michael Watkins
Sent: Wednesday
"ALLOC DDN(CHG$$OT) DSN('') MOD CATALOG REUSE", "SPACE(300,30) CYLINDERS
RECFM(V,B) LRECL(304) BLKSIZE(27998)"
Yes, always allocate anything other than a very small dataset in cylinders.
Also, keep in mind that an extended PS appends a 32-byte suffix onto every
block of data (an 8-byte prefix
DSNTYPE=LARGE allows the 65,535 track (4,369 cylinder) limit to be exceeded.
This should be restricted to SPOOL datasets and the like.
DSNTYPE=EXTENDED does NOT allow this size limit to be exceeded.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Paul Feller
Sent:
Since the subsequent JCL statements won't be preceded by a JOB card, they will
be discarded.
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of Bob
Bridges
Sent: Friday, December 22, 2023 10:04 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Stupid JCL question
CAUTION: This
the
UCB, Prefix and Common Extension?
Mark Jacobs
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On Friday, December 1st, 2023 at 12:46 PM, Michael Watkins
<032966e74d0f-dmarc-requ...@listserv.ua
play the
UCB, Prefix and Common Extension?
Mark Jacobs
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On Friday, December 1st, 2023 at 12:46 PM, Michael Watkins
<032966e74d0f-dmarc-requ...@listserv
Apologies for the double listing to anyone who's also seen this on the JES3-L
LISTSERV.
The government agency that employs me has three z/OS LPARs (V2R5) running on a
z15 server. The lone mainframe storage subsystem is a non-replicated,
channel-attached DS8886. This has never been a JES2
/zos/3.1.0?topic=reference-mount-command
Jim Mulder
-Original Message-
From: IBM Mainframe Discussion List On Behalf Of
Michael Watkins
Sent: Thursday, February 1, 2024 11:43 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Antiquarian Curiosity: Pre-MVS/XA Mount Command for DASD Volumes
Before
Before MVS/XA and RAID DASD, offline DASD volumes (e.g. 3330, 3350 & 3380
units) had to be mounted instead of simply being varied online. The mount
command used the volser of the offline DASD volume as a parameter.
Does anyone remember the format of the mount command?
Does anyone have the
),USE={PUBLIC|PRIVATE|STORAGE}
There are those of us who use that command frequently when building not-current
versions of MVS...
On Thu, Feb 1, 2024 at 10:44 AM Michael Watkins <
032966e74d0f-dmarc-requ...@listserv.ua.edu> wrote:
> Before MVS/XA and RAID DASD, offline DASD vol
Even though virtual tapes are essentially tape images on DASD, if a virtual
tape dataset is allocated to a job or user, another dataset on the same virtual
tape volume cannot be mounted elsewhere for use by another job or user.
However, many virtual tape systems allow the size of each tape to
Yes, absolutely. MVS systems were becoming larger and creating backups was
becoming an issue. Backing up to physical tape was the only real option then.
Not only were there more volumes, but there were more datasets that spanned
volumes.
Before ICF catalogs, catalog records contained VSAM time
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