On Mon, 13 Feb 2012 14:48:57 +0100, R.S. wrote: > >Your idea is worth discussion, but not your requirement is off target. >It is not JCL problem, it is z/OS problem. To fill the requirement the >sapce should be allocated ad hoc, cluster after cluster (*). That >requires total VTOC revolution. > What I'd like to see as a less revolutioary implementation of "SPACE=ANY" is:
o Primary allocation: one cluster. o Succeeding allocations are successive Fibonacci numbers (arbitrary design choice) of clusters. Since extents are not now constrained to be equal in size, this would be a relatively local change in allocation. Since (in some cases) a data set may have up to 123 extents, this would support a maximum data set size of up to 1.6 ^ 122 clusters, hardly a practical limit. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
