On Wed, 12 Aug 2015 18:26:34 -0400, Jim Mulder <[email protected]> wrote:
>> The overt issue I am having is a S0C1 after doing a POINT macro when the >> data is on the second volume of a multi-volume (BSAM) dataset. When I >> first started looking at the issue, I read that an EXTENDED striped >dataset >> would act as though it were on a single volume to the program. I would >> have to add BLOCKSIZE=LARGE to my DCBE and handle the NOTE/POINT data >> correctly, but that was about it as far as changes went. >> >> However, when I started looking at the data returned from NOTE, I am >> getting values of 1, 2, 3, etc. which doesn't quite jive with the >> documentation (I can't believe everything is on track 0). However, when >it >> (apparently) goes to the second volume, the return value from NOTE >starts >> over at 1. >> >> I'm at a loss. Everything I read says this is supposed to work and I am >> sure I have something missing, I just can't figure out what. > > With BLOCKTOKENSIZE=LARGE on the DCBE, the tokens are not TTRs. They >are >simple a relative block number. > > A striped extended format dataset (i.e. stripe count > 1) appears to >a BSAM user as if it was a single volume. The note values are >sequential regardless of which physical volume contains the block. > > For a non-striped multi-volume extended format data set (i.e. stripe >count = 1), >the NOTE values start over for each volume. The program is responsible >for positioning to the correct volume. > > >Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: INFO IBM-MAIN Thanks Jim, that answers a number of questions. However, I have not been able to find information on specifying a specific volume on an SMS managed dataset. The things I have tried fail telling me basically "you can't do that on SMS". Regards, Mark Hammack [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
