My digest also automagically showed up today. Hopefully issue is resolved.
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I have not received my 'daily digest' email for a few weeks now. Maybe
something has changed?
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How to handle this situation: task ‘A’ attaches a subtask, task ‘B’.
The ‘B’ task issues a STIMERM WAIT=YES
Task ‘A’ terminates, but gets the A03 abend since task ‘B’ still active.
How can task ‘A’ communicate to the subtask ‘B’ that it (task ‘B’) needs to
terminate? Task ‘B’ is in the
There are a lot of documented restrictions with CHECKPOINT and NAME/TOKEN
services.
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Perhaps using a directory management product such as VM SECURE or DIRMAINT
would be helpful to prevent such a situation.
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Hello:
In the z/os 2.5 version of this macro, there is this statement:
"
Additional references and an overview of the Function Registry
for z/OS can be found in the z/OS MVS Diagnosis: Tools and
Service Aids book.
"
Looking in the z/os 2.5 version
TRKCALC knows everything.
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IBM provides an index when you download the entire pubs library zip file.
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Interesting after RSU2209 z/os 2.5 this now displays some VM info:
VM CPID = z/VMrelease
VM UUID IS NOT PROVIDED
VM NAME = vmuserid
VM EXT NAME IS NOT PROVIDED
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The manual z/OS: z/OS MVS Diagnosis: Tools and Service Aids GA32-0905-50 shows
that a MODE trace entry will be generated for
"a change into or out of 64-bit addressing mode". Is a SAM64 instruction
supposed to generate such a trace entry? I am not seeing one when a SAM64
instruction is
Hello:
I clear the SYS1.LOGREC with a PGM=IFCEREP1 'ZERO=Y' parm. But if I capture a
SVC dump afer that, the VERBX LOGDATA will still show events that occurred
before the SYS1.LOGREC was cleared. Is there a way to force the z/os internal
version of SYS1.LOGREC to be cleared at the same time
Yes thank you 'LINKAGE=SYSTEM' works. My apologies for not seeing that in the
manual.
Paul
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There was a discussion from 2020 about 'Strange S0C4 on z15' where the
instruction
L 15,X'B4C'(0,0)58F0 0B4C
would cause 0C4 accessing the SVT.
It seems that the TIMEUSED macro, even as of z/os 2.5 level (01* STATUS =
HBB77C0 ) when coded
TIMEUSED STORADR=STIME
generates the
I code an IF SLIP with ACTION=WAIT. When it hits, I get the IEE844W message. I
start the adjunct, and I want to display the storage at the locations pointed
to by the registers. I use the command
CPU 0 CMD DISPLAY PRI regval.100
This works for a register that points to common storage, but
If you have access to the ISPF Configuration Table (see ISPF Planning and
Customizing) you can have ISPF default behavior display it:
DEFAULT_SYSTEM_NAME
Select to display the system name. The valid values are OFF or ON.
The default is OFF.
Hi:
In the z/os 2.4 MVS Programming: Authorized
Assembler Services Reference, Volume 2
(EDT-IXG) in the IEARBUP section, there is this sentence:
"Macro IEARBUPM provides equate symbols for the return and reason codes."
However, IEARBUPM doesn't seem to be in MACLIB or MODGEN.
So 1) was it
Do these comments still apply (15 years later)?:
"
No there is not.
And oh by the way even after you get all that you need from the Principles
of Operation, be aware that there are sections of a linkage stack within
which the entries are, and you cannot necessarily navigate from one section
to
"They should have a link that you select that fixes this. The problem is one of
IBM’s own making. They generate a pie not a cookie. "
Yes unfortunately I get the same error 400 message Yikes — we didn't catch all
of that.) when trying to access the link to report the problem to IBM.
Does anyone get the dreaded 'Yikes — we didn't catch all of that.' message
when trying to access something (like a pmr) in IBM.com?
How to avoid?
I tried their (IBM) suggested remedies of clearing browser cache and cookies
but still no work.
Thank you.
Paul
Just curious. Saw this in a JES2 abend:
$HASP088 FAILING INSTR WAS E3105004
Could not find a 'E310' instruction in the Principles of Operation. Is 'E310'
IBM only? Or is the $HASP088 incorrect?
Thank you.
Paul
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Hello:
Is it possible to alter the secondary space value in a catalog entry for a VSAM
file? Secondary space doesn’t show up in ALTER as a valid value to change, so
I am wondering if it is possible to just issue a hand-written SVC 26 request to
update this field. Effectively I want to give
How can you tell if a step has completed normally or abnormally?
I have looked in the SCT and SCTX but don't see anything relevant. Where else
can this be stored?
Thank you.
Paul
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Hello:
The manual “MVS Programming: Assembler Services
Guide” Chapter 8. “Providing recovery” explains that an ESTAE that is called
with the ‘SDWACLUP’ bit on can only ‘percolate’ (SETRP RC=0). It further
explains that if you do attempt a ‘retry’ (SETRP RC=4) , the retry will be
ignored.
I
IEFDB401 — Dynamic Allocation Input Validation
Routine Exit allows you to fail a request.
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So when an SDWA is present in an ESTAE recovery routine, you
can do a SETRP REMREC=YES to have the ESTAE removed when you
do the retry.
When no SDWA is present, you cannot do the SETRP, so am I correct
in believing that the retry point must then do the ESTAE(X) 0 to
remove the ESTAE?
Thank you.
if you have the ability to read look at
MVS Programming: Authorized Assembler
Services Guide
and
MVS Programming: Assembler
Services Guide
chapters on recovery
problem solved
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Thank you for all of the responses and ideas.
I guess if your 'guest operating system' is something
like 'CMS' then it is quite easy to get consecutive pages of
real storage addresses. But not quite so easy with z/os.
I guess if you really want to do 'query virtual dasd' under
z/os pre z/vm 6.4
I am issuing DIAGNOSE 8 on my z/os image under VM (z/vm) to do a QUERY VIRTUAL
DASD. It works—up to a certain point:
The QUERY VIRTUAL DASD command returns (for me) 38617 (decimal) bytes,
according to the CC=0 after the DIAGNOSE 8 command. My buffer is large enough
to accommodate this. I
The IBM manual
z/OS
DFSMS Managing Catalogs
documents this very well.
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At what point in time does the 'expiration date' of a data set get written
to its catalog entry?
It seems you can allocate a data set with an EXPDT, but a subsequent LISTCAT
will show 'EXPIRATION--.000'. There is a mention in
'SYS1.MACLIB(IEFJFCBN)' that
"
NOTE: JFCBXPDT is not valid
Ed:
Can you elaborate on the reason(s) for your methodology:
"We routinely load base registers and "uninitialized" pointers to
7000 (or sometimes 7BAD) rather than zero."
The one reason I can visualize is that instead of unintentionally
accessing something in low core you would
Hello: I saw this in a z/os 1.13 dump:
00 01B2 008BA3E8 SVC 9 _0001A314 00040520 000400C0
Delete 22:25:22.551801 32
07741000 8000
01 01B2
Hello:
As designed, an ESTAE routine can recover from a (for example) 0C4 abend. The
abend can happen, but the ESTAE can be coded so no one is the wiser than an
abend has happened.
However, if there is a SLIP set for (for example) C=0C4, it seems the SLIP and
its action parms will take
Recently got into some real 64-bit coding. Noticed that there is no
64-bit version of ICM. I am used to doing ICM R1,B'',FIELD and then
a JZ.
It seems for a 64 bit register, there is no ICMxx
R1,B'',64bitfield
equivalent. I have to do a LG R1,64bitfield and then a LTGR R1,R1
Recently got into some real 64-bit coding. Noticed that there is no
64-bit version of ICM. I am used to doing ICM R1,B'',FIELD and then a JZ.
It seems for a 64 bit register, there is no ICMxx R1,B'',64bitfield
equivalent. I have to do a LG R1,64bitfield and then a LTGR R1,R1 and
Ok. It is not clear to me from the IEC615I message that this is a 'user' abend.
Also, since I am the owner of the '(nameremoved)' module, I know that
it does not issue any ABEND 2999,,,USER macro. But I will research more.
Thank you.
Paul
Abend code BB7 does not seem to be documented in the System Codes manual, even
at the z.os 2.1 level. As in:
IEC615I ABEND=000BB7-1101 OCCURRED IN THE (nameremoved) EXIT MODULE FOR
DYNAMIC EXIT IGGPRE00_EXIT
The IEC615I message only indicates that abend 000BB7-110 occured in exit
[Reposting due to the email disruption.]
Hi:
I dynalloc a data set with the 'permanent' attribute.
Later, I do a dynamic unallocate DD name without specifying
the DUNUNALC key. The SVC 99 completes RC=0, but the
DD is not de-allocated.
Specifying the DUNUNALC key also gets RC=0 from SVC 99
Well, this is actually personally of interest to me. But trying to understand
your reply seems to indicate that 1) IEFUSI can't control INIT/IEFIIC and 2)
there is not a GUPI/exit that will allow the INIT to be controlled? Is that
the correct understanding?
Thank you.
Paul
Can the IEFUSI exit be used to control the above-the-16mline-limit for the
INIT address space? Specifically, I have a IEFUSI exit coded that indeed does
look for a REGION=0M and then correctly changes the above the line limit to
x'7fff' (about 1.57gb). However, when I code a REGION=0M in
Actually I am interested to know if using the padding byte of x'B8' would be
beneficial in clearing storage for a program's save area/local dynamic storage
area since the program's save area would definitely be referenced.
Thank you.
Paul
The Principles of Operation state that a padding byte of x'b0' or x'b8' can be
used to influence the use of cache. How much impact does this actually have on
an MVCL(e) instruction?
Further text gives an example of when the pad byte is not 'b1'which it
wouldn't be if you are specifying
Hi:
Is the field JFCBEXTL ever non-zero? The comments in the JFCB dsect say it is
the
LENGTH OF BLOCK OF EXTRA VOLUME SERIAL NUMBERS
(BEYOND FIVE)
but it seems no matter how many volumes I code for a JCL or dynamica allocation
disk data set the field is
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