On Thu, 17 Jul 2014 17:24:30 -0400, Thomas David Rivers wrote: > - After the OPEN has finished, the DCBBLKSI field remains 0.
Do you have a DCBE? > - In this case, we _could_ use 32760 for the size of the read buffer > to allocate.. that seems rather large... and, does LBI mean that > the buffer should be larger? From Using Data Sets in 3.2.3.1.1 Large Block Interface (LBI), "Currently blocks of more than 32 760 bytes are supported only on tape, dummy data sets, and BSAM UNIX files." In any case, a block on a DASD can't be more than a track. > (I couldn't find anything about the > maximum block size for an LBI file, but I didn't (yet) look that hard > either.) And, what about SPANNED? Does that come into play? No. A logical record can be spanned. A block is the physical record that is on the device. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
