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Re: common storage usage question

> On Jun 20, 2017, at 3:37 PM, Ed Jaffe wrote: > > On 6/20/2017 8:24 AM, Jesse 1 Robinson wrote: >> SWA is another candidate, but don't just move it up across the board without >> some testing. Above the line can cause problems there. > > Of course SWA is private,

Re: Store Clock Fast really can give duplicates

I believe the answer is 22 or 23 Determine the odds of 2 people NOT having the same birthday - then 3 then 4 .. keep going until the percentage drops below 50 Chris Hoelscher Technology Architect, Database Infrastructure Services Technology Solution Services 123 East Main Street Louisville, KY

Re: Simple (?) C question

On Tue, 20 Jun 2017 16:37:56 -0700, retired mainframer wrote: >Does MacOS run on any IBM mainframe? >> No, but I've used setvbuf() that I mentioned later in this thread to accomplish this purpose on z/OS xlc. If xlc doesn't conform to POSIX it ought to be APARable: On Tue, 20 Jun 2017 09:44:02

Re: Simple (?) C question

Some additional remarks below ... Am 20.06.2017 um 22:56 schrieb Bernd Oppolzer: I tried the program, too, using my local Watcom C compiler. No problems, but I had to add some global definitions to make it run. Looks like this: #include #include #include char *get_static_string(void) {

Re: Simple (?) C question

I tried the program, too, using my local Watcom C compiler. No problems, but I had to add some global definitions to make it run. Looks like this: #include #include #include char *get_static_string(void) { static char str[81] = "This is a statically allocated C string"; return str; }

Re: common storage usage question

On 6/20/2017 8:24 AM, Jesse 1 Robinson wrote: SWA is another candidate, but don't just move it up across the board without some testing. Above the line can cause problems there. Of course SWA is private, not common... -- Edward E Jaffe Phoenix Software International, Inc 831 Parkview Drive

Re: Simple (?) C question

It's thread safe in that sense that several processes (LE enclaves) running in parallel each get their own instance of the WSA, so there is no mixing of static variables in this case. Of course, if you use other variants of multi-threading which don't involve separate (that is, parallel) LE

Re: Simple (?) C question

Am 20.06.2017 um 13:12 schrieb Don Poitras: Not if you compile RENT. In that case the static is allocated in a separate area rather than being inside the load module. and: every invocation of the module from potentially parallel LE enclaves (for example, when used inside a DB2 stored proc

Re: Store Clock Fast really can give duplicates

Paul Gilmartin wrote: >>If you're one in a million, and you live in a city of three million people... >It may be far worse than that: https://en.wikipedia.org/wiki/Birthday_problem Hm? This isn't the same thing, it's a monotonically increasing counter. It's just a question of whether things are

Re: Store Clock Fast really can give duplicates

On 20 June 2017 at 14:50, Paul Gilmartin <000433f07816-dmarc-requ...@listserv.ua.edu> wrote: > I've always thought of STCKF clashes as a >>theoretical problem not likely to be encountered in one's lifetime. >>The APAR description suggests, without clearly saying so, that this >>has happened at

Re: Store Clock Fast really can give duplicates

(Must be Friday somewhere.) I first heard this ages ago as a puzzle. If you want to bet money on matching birthdays in a group of people, how many people would you need to give yourself winning odds? Of course, way fewer than most people would guess. So you take your winnings and hit the road

Re: Store Clock Fast really can give duplicates

On Tue, 20 Jun 2017 14:27:33 -0400, Tony Harminc wrote: >There's a recent CICS APAR PI82188 that showed up in my Red Alert ... > >STCKF and friends have been discussed here and/or the assembler list >in recent years, but I've always thought of STCKF clashes as a >theoretical problem not likely

Re: Store Clock Fast really can give duplicates

Interesting. ObAnecdote: I was trying to test STCK a couple of years ago, and compare it to STCK. I ran a loop of 1M STCKs and another of STCKFs, and found that STCKF was way *slower*. This was on a zPDT; IBM said "Ooops" and wrote a fix. -- ...phsiii Phil Smith III Senior Architect & Product

Store Clock Fast really can give duplicates

There's a recent CICS APAR PI82188 that showed up in my Red Alert feed. Evidently CICS was using STCKF to obtain a "unique" value as a Unit Of Work (UOW) identifier, and once in a while two STCKFs returned the same value, with Very Bad consequences. The fix is to change it (back, by the sound of

Re: John Ehrman in Mainframe Extra Magazine

Hi Lizette, Thanks!! :) Linda Sent from my iPhone > On Jun 20, 2017, at 8:09 AM, Lizette Koehler wrote: > > Or this link > > http://www.ibmsystemsmag.com/mainframe/trends/zTalk/John-Ehrman/ > > Lizette > > >> -Original Message- >> From: IBM Mainframe

Re: common storage usage question

On Tue, 20 Jun 2017 14:11:39 +, Pommier, Rex wrote: >Hi all, > >Curiosity question. Due to some storage issues we've had >recently with old 24 bit programs, I am revisiting our common >storage configuration - CSA and SQA. Taking fragmentation >into account, it appears that I'm using

Re: Simple (?) C question

Thanks John. I know of no code that does this, nor do I intend to implement any. What I was really trying to determine is if a routine could possibly (rightly or wrongly) return a pointer to a field that was statically allocated rather than dynamically allocated. Which would mean that the

Re: common storage usage question

SWA is another candidate, but don't just move it up across the board without some testing. Above the line can cause problems there. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐===

Re: John Ehrman in Mainframe Extra Magazine

Or this link http://www.ibmsystemsmag.com/mainframe/trends/zTalk/John-Ehrman/ Lizette > -Original Message- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of Lizette Koehler > Sent: Tuesday, June 20, 2017 8:07 AM > To: IBM-MAIN@LISTSERV.UA.EDU >

Re: common storage usage question

Things to consider SQA can expand into CSA but not the other way around. You need enough SQA to get up and running. I would have no issue with trying half of the existing SQA CSA has become pretty stable, with most of the growth in ECSA. With this in mind, I would feel comfortable reducing CSA by

John Erhman in Mainframe Extra Magazine

Watch the wrap http://ibmsystemsmag.com/mainframe/trends/zTalk/John-Ehrman/?utm_source=Silverpo pMailing_medium=email_campaign=062017-b_IMFEXTRA%20(1)%20Live%20Send _content=Article%20Title%202=11299867=MTMzMjEwNjg4OTU3S0 JobID=1181716013=MTE4MTcxNjAxMwS2 Or tinyurl:

Re: CSSMTP user exit and external email

On 2017-06-20, at 05:30, Jousma, David wrote: > Sounds interesting. Where would I learn more about this? > Who administers your corporate mail server? On a Linux system, I have configured mutt with simply: # From: https://ubuntuforums.org/showthread.php?t=1946910 # Also make sure the

Re: Aux storage users

There were a whole batch for SPEs delivered by PTF for SDSF 2.1 and 2.2. IIRC a total of 4 for the z/OS code and one extra for the z/OSMF side). There have also been a few corrective PTFs created on top of the SPE PTFs. I would recommend downloading all SDSF PTFs and then APPLY all PTFs for the

Re: Simple (?) C question

On Mon, 19 Jun 2017 17:13:00 -0700, retired mainframer wrote: > >Probably unrelated to your real question but the format string passed to >printf should also have a \n after the %s to insure the output is visible. > On MacOS, at least, buffers are flushed when the program exits, so the output

common storage usage question

Hi all, Curiosity question. Due to some storage issues we've had recently with old 24 bit programs, I am revisiting our common storage configuration - CSA and SQA. Taking fragmentation into account, it appears that I'm using about 38% of my allocated SQA and about 46% of my allocated CSA.

Re: PDSE dataset rename issue

On Tue, 20 Jun 2017 02:34:19 -0500, Giliad Wilf wrote: >>It is not clear to me what the OP did. His description of the steps >> that he took were not precise, and were scattered among several >>posts. >> >. >. >On the post opening this specific thread, venkat kulkarni said: >"But this dataset

Re: TMS REPORT

Esmie, As Lizette and John indicated, simply run TMSBINQ with the SYSIN having a single command of HEADERS. That will list (no matter what format of TMC you have) all the volume ranges defined in that TMC. And while Lizette and John were very fast in replying to you, another place you might

Re: Customer is Using CPACF (Crypto) purchased Crypto Express

Right - the CPACF Protected Keys are *very* secure and we were very happy with our ability to add that feature. Unfortunately, for some applications (such as payment card systems), the standards require a "Secure Cryptographic Device" (SCD) like an HSM that has advanced active tamper detection

Re: CSSMTP user exit and external email

Sounds interesting. Where would I learn more about this? _ Dave Jousma Manager Mainframe Engineering, Assistant Vice President david.jou...@53.com 1830 East Paris, Grand Rapids, MI  49546 MD RSCB2H p 616.653.8429 f 616.653.2717

Re: Simple (?) C question

Not if you compile RENT. In that case the static is allocated in a separate area rather than being inside the load module. In article <32db4b0b-1271-18b1-574c-9cb6a37a2...@gmail.com> you wrote: > If the string can be mutated either by the client or the runtime > returning by reference is not

Re: PDSE dataset rename issue

Ok, time for me to jump in and out, since it seemed nothing is happening... To Venkat Kulkarni : >... to add new SYS1.SIEKLNKE dataset into system. Are you sure of the spelling? >But this dataset was allocated to LLA and XCF. So, we unallocated to linklist >and stop LLA. It is not enough.

Re: PDSE dataset rename issue

On Mon, 19 Jun 2017 15:23:12 -0500, Tom Marchant wrote: >On Mon, 19 Jun 2017 14:45:13 -0500, Giliad Wilf wrote: > >>On Sun, 18 Jun 2017 20:15:50 -0400, Jim Mulder wrote: >> >>> SETPROG LNKLST,UNALLOCATE >>> >>> SETPROG LNKLST,ALLOCATE >>> >>> Use

Re: CSSMTP user exit and external email

On 16/06/2017 9:30 PM, Jousma, David wrote: We have had quite a few requests to allow for external email, and have been reviewing the controls that are available. Instead of running a SMTP server on z/OS, my inclination would be to define one or more email users for your z/OS systems in

Re: RFE? xlc compile option for C integers to be "Intel compat" or Little-Endian

In article <1ddef60c-e98c-b434-10b3-4c775091f...@bcs.org.uk>, CM Poncelet wrote: > > FWIW I had an analog wall-clock in the late-50's / early-60's that > showed 4 as - not IV. I cannot remember what its 9 was. Using > letters as numerals prevented the Romans and