Only with BPX_SHAREAS=YES. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Jon Perryman <jperr...@pacbell.net> Sent: Tuesday, September 9, 2025 9:08 PM To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: Pipelines = you don't understand z/OS External Message: Use Caution On Tue, 9 Sep 2025 22:12:45 +0000, Farley, Peter <peter.far...@broadridge.com> wrote: >Also, BatchPipes was not really a PIPEs implementation Externally, it meets PIPE requirements because it writes to a DCB that is read by another DCB. Internally, the STC receives the data from the SSI and then forwards the data to the receiver. I assume z/OS Unix does this more efficiently because both processes are in the same address space. > it was just a way to push data from one batch process to multiple other ones > without a real file as the intermediary, Essentially true because of z/OS device independence. It doesn't care if the file is tape, disk, vio, batchpipe or ???. >When I think of PIPEs I mean a CMS-style pipe command implementation >usable in a single (possibly) multitasking process, True pipes are accessible across address spaces. > NOT, as you put it, “. . . designed for sysprogs making choices”. I've been told by many developers that they have full control. They love taking responsibility for security, efficiency and all other aspects. Do you consider DB2 for zLinux system level software despite using nothing more than TCP sockets. Which of the Unix distributed computing solutions is not application level design? On z/OS, is the application programmer making decisions or does the sysprog play a vital role? Application developers play a vital role in z/OS choices but sysprogs play a much larger role. In Unix, application developers play the only role and often make bad choices. BIG-O is clunky for optimizing a Unix application? ---------------------------------------------------------------------- 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