A little more can be done with foresight. It is possible to establish a convention that marks never-initialized records and/or deleted records.
Gerhard's fundamental point---The size of the key space determines how many records a BDAM dataset is to contain,and "DASD" space for all of them is allocated at dataset-initialization time---is inescapable. Shops that used BDAM heavily---Some few still do---almost always defined and calculated their own measures of utilization, which for performance reasons were implemented in assembly language by an I/O-savvy programmer. More generally, it is perhaps worth observing that when ISPF does not provide one of its standard statistics for some DSORG this is because there is no straightforward, vanilla way to do so. John Gilmore, Ashland, MA 01721 - USA ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
