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. This operation seems crucial for system maintenance and optimization, yet I wanted to clarify any potential risks associated with this action. As far as I understand, LASTREF refers to the last accessed date of the file. Hence, LASTREF=NONE implies that the file has not been accessed since its creation. Could you confirm if my understanding is correct？ Additionally, I have been attempting to search for more information about LASTREF=NONE in the IBM manual, but my efforts have yielded limited success. If possible, could you kindly guide me on how to navigate the manual to find specific information like this one or recommend any reliable resources where such details may be more readily available?
Lastly, does IBM have any specific requirements regarding the closure of PS datasets? By this I mean if a PS has been opened and never closed, would the LASTREF also be none? Any advice or insights you have on this matter would be highly appreciated. Looking forward to your helpful response. Best regards, Jason Cai ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
