In a recent note, "Shmuel Metz (Seymour J.)" said: > Date: Mon, 31 Jul 2006 21:19:04 -0300 > > In <[EMAIL PROTECTED]>, on 07/31/2006 > at 04:59 PM, Paul Gilmartin <[EMAIL PROTECTED]> said: > > >Some months ago in these pages I proposed the rudiments of a scheme > >of obtaining a SHR ENQ on each DEB when a data set is opened, and an > >EXCL ENQ on the DEB of any extent to be freed. Mark Thomen (IIRC) > >countered with examples of system code that manipulate extents > >without ever creating DEBs. > > It wouldn't work anyway, because even if the other task did do an OPEN > it would have a different DEB. > Not the address of the DEB, of course, but its content: volume and TTR -- whatever is canonical over the affected scope.
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