Ciao Walter, in my understanding:
Generally, DFSORT can automatically determine the input file size. However, in a few cases, such as when an E15 supplies all of the input records, when information about a tape data set is not available from a tape management system, or when Blockset is not selected, DFSORT cannot determine an accurate file size. In these cases, if the number of records is not supplied by the FILSZ or SIZE run-time option, and dynamic allocation of work data sets is used, DFSORT uses the DYNSPC value in effect as the approximate amount of primary space. would mean that if you do not specify FILSZ or SIZE parameters, DFSORT would guess the right size for SORTWKxx. If you specify FILSZ or SIZE and the value is not correct DFSORT should send the ICE047A message even thought it did not in the site I tried (it should depend on the installation default). I know there're lots or installation parameters and of course more combinations .... so it's not so simple to be sure. Ciao. Massimo 2015-09-14 15:59 GMT+02:00 Walter Marguccio < [email protected]>: > Ciao Massimo, > I read that excerpt, too, which however refers to unknown file size as > input.I'd like to know the amount of primary and secondary space of > dynamicallyallocated SORTWKxx when the input file size is known. > Which lead me to another query ... 1) I know my programmers specify often > FILSZ on the PARM2) we have DFSMSrmm3) I'm pretty sure BLOCKSET technique > is always selected for a SORT operation > Can I assume from the above that DFSORT is always able to determine an > accurate file size ? Walter Marguccio > z/OS Systems Programmer > BELENUS LOB Informatic GmbH > Munich - Germany > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
