On Thu, 31 Mar 2016 08:51:36 -0700, retired mainframer wrote: >Most of the ISPF libraries used by multiple users should be for input only. >Who is adding to it and why? Is the PDS really full or does it just need to >be compressed? > Notwithstanding ISPF has effective mechanisms for serializing library updates by multiple users.
Compressing a data set in use is probably a bad idea. >How quickly do you need to address the issue? Is the PDS SMS managed? If >not, create a duplicate on another volume with the same name (possibly with >different space parameters). Change the catalog to point to the new one. As >new users logon, they will allocate the new one. Eventually, all the current >users will log off (you may need to have any long-term users logoff and logon >again) and the old dataset will no longer be allocated. There is a RACF >profile that will allow you to rename the old one and then you can delete it. > All the while tiptoeing around ENQ lockouts. I discovered, decades ago, that DYNALLOC will create a NEW data set while other jobs are holding ENQ SHR on the DSN. To my dismay; I really wanted that *not* to happen. Went to PMR; got WAD. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
