Thanks for the IPCS observation. I had never noticed that dynamic dump allocation creates FBS data sets. It makes a lot of sense.
. . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Tom Marchant Sent: Friday, January 06, 2017 5:13 AM To: [email protected] Subject: (External):Re: IEC141I 013-A8: how to read VS data sets? On Fri, 6 Jan 2017 01:20:19 -0600, Bill Woodger wrote: >The S in FS is the same "standard" as the S in FBS. > >FS guarantees (by the person who coded it) that there is no partial >track within the file/data set, so that a record can be read directly >through the calculation of its position. Correct. I usually think of it FBS as meaning only that there are no short blocks, but there are other requirements, including: * Every track except the last contains the same number of blocks. * Every track except the last is filled as determined by the track capacity formula established for the device. >As far as I know, it is simply that guarantee that is the difference, >so it can be acted upon. S meaning "this data set has not been MODded Are you sure? I'm not sure, but I thought that MOD would start by filling up the last track. BTW, IPCS requires FBS for dump data sets. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
