On Wed, 18 Feb 2009 19:04:17 -0500, Thompson, Steve wrote: > >Prior to working here, I have been at customer sites running OS/390 V2R9 >through z/OS 1.4. One customer site was running z/OS 1.1 with three >LPARs all sharing DASD. We did not have MIM. We did not get crushed PDS >members EXECPT for when I made the mistake of running multiple >assemblies with LNKEDTs to the same load library. There we wound up with >a screwed up directory and bad members. MY OWN FAULT for NOT using >DISP=OLD. > I had believed Linkage Editor protected itself with ENQ/reserve on SYSIEWLP. A symptom I remember from decades ago was deadlocks.
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