> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of nitz-...@gmx.net > Sent: Tuesday, December 16, 2014 1:56 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: RECFM=VBS,LRECL=32767? > > > 6 //DD7 DD UNIT=SYSALLDA,SPACE=(1,0),RECFM=VBS,LRECL=32767 > > 6 IEF638I SPECIFIED NUMERIC EXCEEDS MAXIMUM ALLOWED IN THE > LRECL SUBPARAMETER OF THE DCB FIELD > > Why is this considered an error? > > > > In fact, 32761 is accepted; 32762 causes the error. On what rationale is this based? > > The same limts appear to apply to RECFM=VB. > > I haven't tried OPENing any such data set. > > The explanation I came up with when I tested boundary conditions (<VBG>) was that > 32767 is the maximum allowed for fixed records. And that length was determined by > DASD geometry (in the past). A variable length record always has a length field preceding > the actual record data. And since this is blocked, you also need length for the block > descriptor. These two make up the 6 byte that you cannot specify for lrecl without > exceeding geometry. I haven't tested (or if I did, I forgot the results) if it makes a difference > when you use RECFM=V(S). The layout is described somewhere in SC26-7410 Using data > sets.
Isn't the RDW already included in the LRECL (VBA print files are 137 which leaves 133 for data which includes carriage control)? Isn't the BDW always excluded from the LRECL since only one is present in a block which may contain more than one record)? Aren't the RDW and BDW both 4 bytes each? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
