You are correct in your assumption of what I am trying to do so what is the point of share options
> On Feb 24, 2021, at 12:55 PM, Joel C. Ewing <jce.ebe...@cox.net> wrote: > > But if you are talking about having multiple jobs having the file open > for writing concurrently, pretty sure you are talking about either using > VSAM RLS or observing some fairly stringent rules that requires the > programs involved to manage file record integrity on their own and to > use a SHR option that allows multiple concurrent opens for write and > constantly refreshes buffers for each record processed. It's not just > a matter of substituting a VSAM file for a RECFM=VB file. If you try > multiple concurrent OPENs for write on a VSAM with the usual default SHR > options, only the 1st concurrent open for write will succeed. > > If the object is to be able to write randomly interspersed records from > multiple jobs running concurrently, another possibility that might be > explored is to use a UNIX file and have all the jobs append output to > the same unix "log" file. > > z/OS assumes you want file integrity and deterministic behavior and > enforces that on MVS data sets. > The Unix world assumes you want what you "ask" for and if you ask for > multiple processes to write to the same file concurrently in ways that > are non-deterministic, it assumes random ordering from concurrent writes > is acceptable. > > Joel C Ewing > >> On 2/24/21 11:11 AM, Massimo Biancucci wrote: >> Joseph, >> >> for sure. >> >> VSAM variable length is OK. >> >> When define VSAM keyword RECORDSIZE( 1000 131072 ) states lrecl from to. >> >> Best regards. >> Max >> >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> >> Mail >> priva di virus. www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> >> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> >> Il giorno mer 24 feb 2021 alle ore 17:38 Joseph Reichman < >> reichman...@gmail.com> ha scritto: >> >>> Hi >>> >>> I have multiple jobs sharing the same the same output dataset >>> >>> It’s RECFM=VB >>> >>> Is it possible to define this RECFM under VSAM, as with VSAM multiple jobs >>> can write to the same dataset >>> Thanks >>> >>> ---------------------------------------------------------------------- >>> 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 > > > -- > Joel C. Ewing > > ---------------------------------------------------------------------- > 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
