I believe JES2 read the proclibs without data integrity (i.e. no ENQs are issued for the libraries). I/O errors can arise if the reads are attempted during the data movement process. I have never seen this documented, but it may be. Lennie
-----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Radoslaw Skorupka Sent: 12 June 2024 06:54 To: [email protected] Subject: PDS compress and PROCLIB Silly question: is it risky to compress any PDS belonging to PROCLIB concatenation? Is it documented anywhere? And the same for PARMLIB. -- Radoslaw Skorupka Lodz, Poland ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
