Long ago (in OS/390?) IBM introduced a bunch of keywords equivalent to subparameters of DCB, e.g., LRECL= is equivalent to DCB=LRECL=. I believe that LIKE= was part of that.
-- 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 Paul Gilmartin <0000042bfe9c879d-dmarc-requ...@listserv.ua.edu> Sent: Sunday, January 7, 2024 5:15 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: allowed characters in member name On Sun, 7 Jan 2024 21:50:07 +0000, Gibney, Dave wrote: >DCB for the subparameters as been depreciated and, in my opinion, bad form for >most of the 40 years I worked on mainframes. The DCB=modeldscb form used for >new GDS allocations hasn't been needed since SMS came along. Early 90s'? >I may recall wrong, but I think LIKE was new with SMS. > Formerly needed; now deprecated. Why was it ever needed? I suspect the change was less to accommodate SMS than UNIX files, which support attributes but no DCB. Answering my earlier question (IRTFM): <https://www.ibm.com/docs/en/zos/3.1.0?topic=parameter-examples-like> Example 2 //SMSDS7 DD DSNAME=MYDS7.PGM,LIKE=MYDSCAT.PGM,DISP=(NEW,KEEP), // LRECL=1024 In the example, the data set attributes used for MYDS7.PGM are obtained from the cataloged model data set MYDSCAT.PGM. Also, the logical record length of 1024 overrides the logical record length obtained from the model data set. -- gil ---------------------------------------------------------------------- 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
