It's more than a custom; FB80 doesn't allow long lines.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> on behalf of Jesse 1 Robinson <jesse1.robin...@sce.com> Sent: Thursday, August 23, 2018 1:46 PM To: IBM-MAIN@listserv.ua.edu Subject: Re: SYSREXX PDS size (OK, I know my question sounded dumb, but I was afraid I was grossly misinterpreting the thread.) If I were gifted with the luxury of building a new MVS environment from scratch, I would make all REXX and CLIST libraries FB-80. For one thing, that's how virtually all vendors deliver execs. Running with concatenated VB libraries means converting delivered FB objects to VB. Not a huge burden but a task that must be performed periodically to keep up with vendor maintenance. In truth, that chore often gets overlooked--for years at a time! So what's with VB? Every 'mature' shop I've ever been in has used VB libraries. The custom--it's no more than that--goes back decades (think 70s)--to the day when DASD was extraordinarily slow and expensive. Execs are text files that contain lots of trailing blanks. A VB data set can be edited to remove trailing blanks and considerably reduce the space required to store execs and to perform I/O on them. Long before MVS REXX, CLISTs were heavily used. VB reduced the overhead, meaning that VB was more economical. That concern seems pretty trivial these days. But in order to convert existing VB exec libraries to FB, *every single user* in the shop would have to convert at the same moment because, for the all the whizzbang modernization in MVS, data set concatenation still requires all FB or all VB in a single DD. There would be no grace period in the cutover. Just chaos. In the case of system REXX, our SYS1.PARMLIB(AXR00) names only one SYSREXX library, so we could convert that guy to FB with minimal impact. But really, why bother? In 2018 I still get problem calls with mysterious abends resulting from invalid concatenation. A practical suggestion. If your SOP exec libraries are VB, you can get around some concatenation problems like this: ADDRESS ISPEXEC "SELECT CMD(EX 'SYS1.SBLSCLI0(BLSCLIBD)') MODE(FSCR)" This statement in a VB library invokes the real IBM-supplied FB IPCS. No conversion or periodic updates required. Transparent to the user. . . 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 ⇐=== NEW robin...@sce.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Ed Jaffe Sent: Thursday, August 23, 2018 10:09 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: SYSREXX PDS size On 8/23/2018 9:01 AM, Jesse 1 Robinson wrote: > Could I ask what 'SYSREXX' means? At first I thought this referred simply to > the standard common set of REXX execs that users allocate at logon. Is it > something else? System REXX. AXR address space. Scott Fagen's last project before leaving IBM. Where is the real Skip Robinson and what have you done with him? -- Phoenix Software International Edward E. Jaffe 831 Parkview Drive North El Segundo, CA 90245 https://secure-web.cisco.com/12n08JKdkdoeomgo8xXmFv4g6kIumZ8SkhGql2MLJw2lqGonfLypVwzvVMtTCdYtPlv-8vlErIP7wBd6HLVgcZ5p8cto6rD-z6eiGDoE6a1SF15JdB5p096tJZI_j8GmR7bGXNxnr_UfTMa6Abl5ZrnXHOiDefGtV9HMOGaor_3eE1uPWSXJ9TletBI_8rrzY2mMfeILwvk3elviE2zqHv74l5aa6rXp9ot8mbDwpzsOiYNtCiTepBF88JuiFyaR57tlbbC7LvwqYz2UzslcRLy-L4NJfeT_DgugRhU-tOQBoCUNXJCsEsJLt4KHc7emS45rdLyUIAZCfQs9QfVTTW6TSaW9WqW7kd6KqUAUFeyuF1eSk-lfs3fSZDD7VW4zlC052rJ-VyNMi2wEB2Zq_I96wBKMfFuZq6MlM4cnFKg8x_-Bhwrg0oe90OkE6Klm7/https%3A%2F%2Fwww.phoenixsoftware.com%2F ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
