On Tue, 2 Mar 2021 15:25:33 +0100, Radoslaw Skorupka wrote: >try any RECFM=FB and LRECL between 13349 and 18118 > >Generally it may be 1/3 or other 1/n where n is odd (uneven). > It must be either prime or 1.
Has anyone an example for 1/11? (Always assuming Blocked.) >As currently unemployed I have no z/OS at hand (OK, I have one due to >someone's kindness), when you play with large enough LRECLs you will get >SDB at 3 blk/trk, 5 blk/trk, 7 blk/trk and maybe more. > >Why is it so unpopular? >Because usually we use shorter LRECLs. > >To be honest I found it accidentally when preparing excercises for VSAM >course. Default CISZ on 3390 is 18432 and physical block is also 18432, >and it is the most effective usage of track (least space unassigned to >any CI). -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
