> 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. Barbara ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
