>Compressing a data set in use is probably a bad idea. In general, I'd change "probably" to "definitely". Of course there are times when it works OK, but the dangers are real.
I've thought of having z/OS provide some customer-specifiable option that would require DISP=OLD in order to compress a PDS to protect. Is that of interest? It would default to current behavior (i.e., not require) Peter Relson z/OS Core Technology ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
