Could you be thinking of the option to write an EOF when allocating a new PS?
-- 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 Steve Thompson <ste...@wkyr.net> Sent: Wednesday, May 8, 2024 12:54 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: IEFBR14 -- DSCB set? [WAS: Consultation on the Potential Risks of Deleting Specific Datasets] I remember some releases ago of z/OS that the system will effectively do an OPEN if a DSN is created using IEFBR14. But now I can't seem to find where that is documented. So far I can't find it in the z/OS 2.2 or 3.1 JCL User's guide. I think that if the allocation specified the DCB info (LRECL, RECFM, and blksize) that this would be put into the VTOC when IEFBR14 was used to do the allocation. So in a case like this, would the last ref date be "empty"? Steve Thompson ---------------------------------------------------------------------- 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
