On Wed, 2 Apr 2014 12:48:07 -0500, John Gilmore wrote: > >IIRC, this command once allocated only one dataset at a time. Someone >pointed out that the underlying facility it uses can allocate more >than one at a time, that this is advantageous, and that an inference >to its being able to do so is a plausible one (on the basis of the >behavior of OPEN, CLOSE, etc.). > >I further suspect that the extension to make it do so was then botched. > I have a credible, though illogical and farfetched alternative explanation:
One might usefully create a single data set with DISP(NEW) (or MOD) with no intent to use it immediately. A catenation of data sets must have DISP(SHR) (or OLD), and with no DDNAME such an allocation is useless but spends resources. The illogic would lie in conditioning the requirement not on DISP, but on the catenation. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
