On Fri, 15 Sep 2023 23:25:02 +0000, Sri h Kolusu wrote:

>>> Is there reason not to use BLKSIZE=0, which has been preferred for over a 
>>> decade (but may not work with COBOL.)
>
>You can use BLKSIZE=0, but also code DSORG=PS , so that SMS calculates the 
>Optimum Blksize based on the LRECL
> 
What's the default DSORG?  Does SDB not respect that?  I've long trusted SDB.

I assume SDB operates *after* the DCB OPEN exit, for compatibility with
ancient code.

-- 
gil

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