I have a *LOT* of commercial product SMF exit experience, some of it very painful. Let me second everything Rob says. Including that the environment is "code-hostile": possibly SRB, possibly X-memory, and with few MVS services (no ENQ, no WTO, no WAIT, etc.). You can get reentered multiple times on different processors. Whee!
In addition > we are using IEFU85 because of the specific SMF records that we are deleting Don't do that! Just because up to now you have seen SMF record type X exclusively through IEFU85 it does not mean that tomorrow some will not start coming through IEFU83 or 84. The rules that Rob quotes are solid and dependable; "rules" like "all Db2 Type 101 records come through IEFU85" are absolutely undependable. Things could change not just at a release boundary, but with a PTF. Look through all the IBM documentation: you will not see a single line anywhere that says " SMF records produced by product X come through IEFU84" or similar. So, circling back around, use IEFU86. All records come through IEFU86. That is a dependable rule. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Rob Scott Sent: Tuesday, May 10, 2022 7:44 AM To: [email protected] Subject: Re: [EXTERNAL] Re: Producing throwaway SMF? Can I suggest that if you are considering implementing SMF record installation exits that you use IEFU86 instead of one or more of IEFU83/4/5. There are rules for which SMF exit applies : IEFU83 driven when SMFWTM or SMFEWTM with BRANCH=NO IEFU84 driven when SMFEWTM with BRANCH=YES IEFU85 driven when SMFEWTM with BRANCH=YES and MODE=XMEM With IEFU86 only have to implement one exit , albeit in possible x-memory mode (and maybe locked- so be careful), and you will be able to support the extended SMF records (eg type126) that will be used extensively for modern SMF record producing code from IBM and ISV software products. Rob Scott Rocket Software -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Shiller, Larre Sent: 10 May 2022 14:59 To: [email protected] Subject: Re: [EXTERNAL] Re: Producing throwaway SMF? EXTERNAL EMAIL Well... in our case, we are using IEFU85 because of the specific SMF records that we are deleting and how they are produced, but I believe that you can use any of the IEFU8x exits for this purpose. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
