The problem is not the RDW it’s the BDW with QSAM that’s somewhere inside DFSMS code it doesn't seem RECFM=U would reveal that
Joe Reichman Joe Reichman IT Specialist Master Files Division New Carrollton Federal Building, B7-182 OS:CTO:AD:CP:I:IB Flex M,T,Th,F Home office (240) 863 - 3965 Office (240) 613-4350 Cell (917) 748-9693 TOD M - F 7:30 am - 4:00 pm -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu] On Behalf Of Bill Woodger Sent: Tuesday, July 19, 2016 1:13 PM To: IBM-MAIN@listserv.ua.edu Subject: Bsam VS Qsam for VB records With RECFM=U, you get the entire physical record presented to you. It has no "length" as far as the system is concerned, it is just an amorphous lump of data. For VB-as-U the first four bytes are the RDW of what was the block, the next four bytes the RDW of the first record, and you can find the start of the next record (next RDW) though some simple maths (adding). On Tuesday, 19 July 2016 17:15:53 UTC+2, Reichman Joseph wrote: > With RECFM=U there is 1 record per block and the BDW is RDW + 4 ? > > Joe Reichman ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
