On 09/02/10 06:39, Scott McLeod wrote: > > You're spot on with LABEL=(,,,IN), an obscure JCL option known mostly to > FORTRAN programmers, and a sure way to make a DD input-only. > > Also years ago, I earned my stripes with our senior MVS systems programmer, > when he was debugging an abend with a vendor's OCO FORTRAN program. The JCL > said DISP=SHR, the operators took the write ring off the tape, yet still the > step abended (because FORTRAN was opening the dataset INOUT). > The operators should have been instructed to respect the programmers' setting of the label parameter and leave the ring IN if the programmer codes LABEL=(,,,OUT) and OUT if the programmer codes LABEL=(,,,IN).
-- gil
