In theory you can. The VTOC has to be contiguous, so the area on the disk just passed to current VTOC must be free. If that is not the case, you will have to move the files that occupy that space, or do it the old way, by emptying the dasd and reinitializing it with a larger VTOC.
Gadi -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Jack Zukt Sent: Monday, August 1, 2022 1:15 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Extending a VTOC Hi all, It has been way too many years since the last time I dabbled with ICKDSF and VTOC definitions (probably over twenty, but I would rather not do the math). Back on those days, if memory serves me right, the only way to extend a VTOC was to clean the DASD of all its contents, put it offline, and recreate the VTOC with the new size. As a few years have passed, I have been going through the ICKDSF manual trying to find out if a VTOC can be extended without having to clear the volume first. I can not say that I have became enlightened. It seems to be possible but I am not quite sure about it. And this being a production volume I really would hate if things do not work as expected. So, in a nut shell, can I extend a VTOC from 90 to 900 tracks without having first to clean the DASD of all its files? Thank you in advance for any help, Best regards Jack ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Email secured by Check Point ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
