On Wed, 8 May 2024, at 13:17, Jason Cai wrote: > Dear all > > I am reaching out to discuss a specific operation we are considering > for our z/OS DCOLLECT reports. Currently, we are planning to delete all > the datasets where LASTREF=NONE and DSORG=PS.
Multiple people have mentioned JCL but remember that datasets can be dynamically allocated in various ways. If LASTREF only gets updated if a file is opened, then there's another problem. I used to use empty (no primary allocation, IIRC) datasets as state flags in applications - everybody could see them via ispf 3.4, those with relevant ACF2 permissions could rename/delete them if it was needed to reset/force an application's state out of some "not supposed to happen" situation. Usually the application renamed the datasets to indicate what it was doing. -- Jeremy Nicoll - my opinions are my own. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
