On Sat, 30 Dec 2023 19:33:34 +0200, Binyamin Dissen <bdis...@dissensoftware.com> wrote:
>On Fri, 29 Dec 2023 14:47:29 +0000 Seymour J Metz <sme...@gmu.edu> wrote: > >:>I need to check whether any of a list of datasets exists and whether any of >a list of ddnames is allocated. I'd rather not trap and parse the output of >LISTALC and LISTCAT, and I'd rather not call LISTDSI for each one. Is there a >simple way to do that in REXX, or would it be better to write a small service >routine in assembler? > >:>I don't have a requirement to handle XTIOT. > >The elephant in the room - why? The OP has never told us what problem he was solving although the last messages hint at it. The original messages implied he was developing an ISPF application. We now know that he doesn't have SYSPROG access and he wants to setup the ISPF environment. The elephant in the room is now mixed dataset attributes for concatenated DD's. E.g. ISPPLIB is by default RECFM=FB,LRECL=80 but he needs concatenated datasets with attributes like RECFM=VB,LRECL=180. > As you are worried about performance, it appears to be something that will > need to run quite often. How will you use this information? The OP has never stated this is about performance. The LISTDSI requirement being a performance issue has become unclear with the last few messages. He implies it will only be used at ISPF initialization. He's said that this is about setting up the ISPF user environment rather that ISPF application environment setup. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
