What about BUFL=? As I recall, I used to use this to keep from having problems with concatenations...

By having a buffer length equal to or larger than any buffer one might read... And we really were beyond CORE in those days. But it is true, C-STORE was expensive.

Regards,
Steve Thompson

On 5/6/19 6:52 PM, Steve Smith wrote:
BLKSIZE=0 requests "System-Determined Block size".  It is indeed the best
option.  Presumably the "system" has all the relevant facts and knowledge
at its disposal.  Which is likely at least as much as you know.

However, BLKSIZE is one of the many things carried over from medieval times
where the amount of core used, how long your reads stayed connected to a
channel, how efficiently DASD at $1000/mb was used, and various other
no-longer-relevant considerations factored into that specification.

sas
<SNIPPAGE>

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