On Mon, 19 Jul 2021 19:43:23 +0000, Seymour J Metz wrote:

>> OK.  It requires multiple DCBs.

>Yes, and if I'm doing something with every member of a PDS then I really don't 
>want all of those OPENs.
>
If I'm doing something with multiple members, e.g. comparing two members, I 
consider
it good design to use one DDNAME, two DCBs and two OPENs.  Isn't the 
alternative an
nightmare  of ping-ponging NOTEs and POINTs?  What would ISRSUPC do?

Writing multiple members of a PDSE (not PDS) concurrently should probably
be done with multiple DCBs.

"doing something with every member of a PDS" is probably better done serially 
than concurrently.

>> A member is not named when it is created,  but only at the point of STOW

>Thanks. Yes, the same issue exists with VPAM.

>> BPAM shoud support GET and PUT. 

>Why? BSAM is for dealing with blocks. Although it would be nice if QSAM had 
>equivalents to equivalents to NOTE and POINT.
>
Too often, "is for" is a feckless apologia, paraphrasing "can only ... although 
it would be nice ..."

>In TSS, you use SETL to point to a logical VPAM record. Check the references I 
>gave you.
>
I got information overload.  Thanks for filtering for me.  Was there a similar 
analogue
for NOTE?  Did the TSS assembler(?) use those?

(What became of the tradition of ">" quotation marks?  I faked them.)

Thanks again,
gil

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