> something I call "Base36" (allow 0...9 and uppercase A...Z)?
I've got a code fragment that converts a 39-bit integer (11+ decimal digits
if I am doing the arithmetic correctly in my head) to a character string
that is a unique valid 8-character MVS node name (first character alpha). It
has the interesting feature that it avoids K, N, S, and T. By doing so, it
guarantees that the node name formed does not contain any of George Carlin's
"Seven Words You Can't Say on TV" as well as the racially offensive N-word.
(I didn't need customer support calls about THAT issue!)
I have no illusions that this is a breakthrough piece of computer science
but if anyone is interested I will send it. It is *not* a directly usable
subroutine -- just a code fragment.
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of Ulrich Krueger
Sent: Tuesday, November 09, 2010 9:01 AM
To: [email protected]
Subject: Re: 8 character dataset nodes
There doesn't appear to be a way to easily get around the 8 character
dataset name (HLQ or node) limitation. It's a design scheme built into the
heart of MVS that we all have to live with.
However, to extend the life of your numbering scheme ...
Have you considered changing the numbering scheme from "decimal only" to
either hexadecimal (allow 0...9 and A...F) or even something I call "Base36"
(allow 0...9 and uppercase A...Z)? You'll get many more valid "numbers" to
fit in a 6-char. field.
All you need (That's easy for me to say ... :-) is to change the routine
which determines the next number to use.
Regards,
Ulrich Krueger
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of David McCrina
Sent: Tuesday, November 09, 2010 4:12 AM
To: [email protected]
Subject: 8 character dataset nodes
The discussion about the 7 character TSO ID limitation brings up something
else I have wondered about. Why are TSO dataset nodes limited to 8
characters?
We have a sequential number that is used as one node of dataset names with a
two character prefix - xxnnnnnn, the assigned number is fast approaching 1
million so we are going to have to re-think the naming convention.
What is the technical limitation of 8 character nodes?
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