Answer / guest

asper my knowledge
lrecl is the actual length for fixed length records and for
variable lenth records it is longest record lenth + 4 bytes.
this length is specified in bytes.
blocksize(blksize) is specified in multiples of lrecl.

in jcl dcb for
for ps -- dcb=(lrecl=m) --- there wil b no blksize.
pds -- dcb=(lrecl=m,blksize=n) -- say n = m*80

if i'm wrong plz let me know..

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