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Unless MVS has changed a WHOLE lot, a block size of 0 is not possible. You can have block=recsize, which is effectively NO blocking, but ZERO is not a option. I make a "BIG" assumption that this tape was created on a IBM mainframe. You should be able to dump the tape and figure out blocksize.... "Prowak, Dave" wrote: > > This message is in MIME format. Since your mail reader does not understand > this format, some or all of this message may not be legible. > -- > [ Picked text/plain from multipart/alternative ] > Hi, > > Here's the short story - A procedure to load recs from a tape went down > recently. > The provider of the tape (mainframe) changed the blocksize from 128 to 0. > With a blocksize of 0, > the program determines the optimum blocksize given a rcdlen of 128. > > It's a no-label tape. How do I determine the blocksize used?
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