RECFM=VB unless the compilers won't support it.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of David Crayford [dcrayf...@gmail.com] Sent: Tuesday, February 28, 2023 12:52 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: zOSMF and zOWE for non-mainframers On 28/2/23 13:41, Gibney, Dave wrote: > How many decades have we had System Determined Blocksize, and other artifacts > of SMS. These details are surely not anything than new folks need to deal > with at the outset. If a young programmer came to you and asked "what is the best DCB for a C++ source data set?" what would you suggest? > >> -----Original Message----- >> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On >> Behalf Of David Crayford >> Sent: Monday, February 27, 2023 9:27 PM >> To: IBM-MAIN@LISTSERV.UA.EDU >> Subject: Re: zOSMF and zOWE for non-mainframers >> >> On 27/2/23 06:46, Andrew Rowley wrote: >>> On 25/02/2023 8:03 am, Bob Bridges wrote: >>>> Oh, I was going to mention that surely allocating datasets, either in >>>> batch or TSO, has got to seem like one of the dumbest and most >>>> incomprehensible things we do on the mainframe, to a foreigner. >>> Allocating datasets shouldn't be that hard to grasp. "Dataset" is >>> actually a pretty common term and generally implies a collection of >>> data with more structure than just a file. >> From what I've seen while working with younger individuals, they tend >> to find the MVS file system quite perplexing. In order to navigate it, >> one must first grasp the archaic concept of CKD disk geometry, including >> blocks, cylinders, blocking factors, and record formats, among other >> things. And that's all before even introducing them to the intricacies >> of VTOCs, catalogs, interblock gaps, spanned record formats etc. >> >>> If people have worked with databases, presumably they have encountered >>> the concept of defining the schema. >>> >>> A dataset is simply a collections of records (similar to a database >>> table) where each record has a fixed length or limited variable length >>> and the total collection has a size limit. Any structure within the >>> records is up to the application. This is not an unusual construct. >>> >>> What is unusual is that z/OS uses such a structured format for almost >>> everything, not that it exists. >>> >> ---------------------------------------------------------------------- >> 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 ---------------------------------------------------------------------- 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
