In my Job Templates defined in Manager, in the AllocatedFile there is a line that calculate the BLOCKSIZE
// DCB=(LRECL=%reclen,BLKSIZE=%blocksize,RECFM=%recfm)
The real jcl in the 390 say
DCB=(LRECL=306,BLKSIZE=3060,RECFM=FB)
The DS is calculating the BlockSize = RecordLenght * 10 (records)
Can i to change the number of records to 100 ????
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