In a recent note, Peter Relson said: > Date: Fri, 5 May 2006 07:39:27 -0400 > > Someone mentioned "compress" and "hope". You'd better do more than "hope". > z/OS allocates the libraries so that if you do a legitimate compress it > won't go through. If you compress a library outside the bounds of what the > system allows, please don't ask for help if things don't work any longer > for that library. > What does the system "allow"? I was astonished to learn lately that IEBCOPY will compress a data set allocated DISP=SHR, even while another job has it allocated, also SHR. Does the system maintain some sort of exclusive ENQ on LNKLST data sets to disallow their being compressed while in use? Or does it simply rely on the conscientiousness of administrators?
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