In a recent note, Greg Shirey said:
> Date: Wed, 15 Feb 2006 16:44:12 -0600
>
> Hmm, I get that, and maybe I'm just being slow, but you said:
> "...best practice for SDB is not to specify BLKSIZE=0, it is to specify the
> DCB and omit the BLKSIZE, or specify the DCB and code BLKSIZE=0."
>
> I'm unclear on what you're describing for the 'best practice' contrasting to
> what you said was not the best practice.
>
I believe that if the programmer codes in the DD statement:
DISP=NEW,DSORG,RECFM,LRECL
... it was stated here that SDB will calculate the BLKSIZE
at allocation. If too few of the above are specified, SDB
has insufficient information and will defer the calculation
until later, in OPEN. If, in the interim, the DCB OPEN
exit supplies a BLKSIZE, SDB is rendered ineffective.
-- gil
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