IEFU29 - Intermittently does not get control
We have been using the standard SMF switch/dump method utilizing IEFu29 for years. Recently on one of out severly systems, IEFU29 is not getting control after our midnight switch of SMF recording. We issue "I MVS" at around midnight followed by our daily SMF accumulation process. We also switch our JES2 SYSLOG at this time. Interestingly I moved the "I SMF" command just a few minutes later and U29 seems to get control just fine. I'ts my understanding that IEFU29 runs as part of the SMF address space so I assume that I'm off base assuming that the WRITELOG we issue for the SYSLOG at the same time is affecting IEFU29however moving the time by just a few minutes after the WRITELOG seems to have solved the issue. Has anyone else come accross this before? Any notions about why IEFU29 is not invoking as expected? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: IEFU29 - Intermittently does not get control
Ruegsegger, Jeff wrote: >We have been using the standard SMF switch/dump method utilizing IEFu29 for years. Recently on one of out severly systems, IEFU29 is not getting control after our midnight switch of SMF recording. Do you do the switch on all LPARS simultaneously on midnight? My (bad) experience is that you should do 'I SMF' one or two LPAR(s) in a sysplex at a time. What is running on that LPAR during midnight? >We issue "I MVS" at around midnight followed by our daily SMF accumulation process. We also switch our JES2 SYSLOG at this time. Interestingly I moved the "I SMF" command just a few minutes later and U29 seems to get control just fine. What is 'I MVS' command? You mean perhaps 'I SMF'? Perhaps that exit does something? Submitting a job or issueing a WTO? >I'ts my understanding that IEFU29 runs as part of the SMF address space so I assume that I'm off base assuming that the WRITELOG we issue for the SYSLOG at the same time is affecting IEFU29however moving the time by just a few minutes after the WRITELOG seems to have solved the issue. Has anyone else come accross this before? IEFU29 is indeed part of SMF address space as documented. I have no more comments, but who issued the WRITELOG and 'I SMF' commands? > Any notions about why IEFU29 is not invoking as expected? What is your exit doing? Do you have the source code? Groete / Greetings Elardus Engelbrecht -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: IEFU29 - Intermittently does not get control
Does anyone have any ideas on this? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: IEFU29 - Intermittently does not get control
On Tue, 13 Jul 2010 02:25:09 -0500, Elardus Engelbrecht wrote: >Ruegsegger, Jeff wrote: > >>We have been using the standard SMF switch/dump method utilizing IEFu29 >for years. Recently on one of out severly systems, IEFU29 is not getting >control after our midnight switch of SMF recording. > >Do you do the switch on all LPARS simultaneously on midnight? My (bad) >experience is that you should do 'I SMF' one or two LPAR(s) in a sysplex at a >time. > We do via our scheduling package TWS...I see them regularly run within seconds on all 3 sysplex members. >What is running on that LPAR during midnight? >Not much. Only one of the other LPAR's is busy (DB2 database for SAP and thats about it) running SAP batch. >>We issue "I MVS" at around midnight followed by our daily SMF accumulation >process. We also switch our JES2 SYSLOG at this time. Interestingly I moved >the "I SMF" command just a few minutes later and U29 seems to get control >just fine. > >What is 'I MVS' command? You mean perhaps 'I SMF'? my bad...yup "I SMF" > >Perhaps that exit does something? Submitting a job or issueing a WTO? Vanilla IEFU29 right out of SYS1.SAMPLIB. > >>I'ts my understanding that IEFU29 runs as part of the SMF address space so >I assume that I'm off base assuming that the WRITELOG we issue for the >SYSLOG at the same time is affecting IEFU29however moving the time by >just a few minutes after the WRITELOG seems to have solved the issue. Has >anyone else come accross this before? > >IEFU29 is indeed part of SMF address space as documented. >I have no more comments, but who issued the WRITELOG and 'I SMF' >commands? Batch job (IEBGENER) issues "I SMF" > >> Any notions about why IEFU29 is not invoking as expected? > >What is your exit doing? Do you have the source code? see my previous on this > >Groete / Greetings >Elardus Engelbrecht > >-- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO >Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: IEFU29 - Intermittently does not get control
It seems unlikely that the system is failing to call the exit routines in the circumstances in which it is documented to do so. Have you tried putting a SLIP trap wherever the call is initiated to confirm that your expectation of calling the exit matches the reality? Are you certain that your IEFU29 is defined properly? There is not one single IEFU29 exit. There is, for example, SYS.IEFU29 and SYSSTC.IEFU29 etc. Doing various DISPLAY PROG,EXIT's can make sure that you have all of the IEFU29's defined that you want and that your exit routine is associated properly with each. You might even try using a name other than IEFU29 (there is no need to use the name IEFU29 for your exit routine) with appropriate EXIT ADD statements in PROGxx. Peter Relson z/OS Core Technology Design -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
