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Home > Forums > Programmers > Languages > Assembly Forum

SYSDSN

thread272-1680695
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telesimke (IS/IT--Management)
17 Apr 12 8:49
Hi!

Does anybody have SYSDSN source code or know the principle it operates upon?

Best regards  
papadba (MIS)
19 Apr 12 16:37
Which SYSDSN are you asking about?

What i've seen is with TSO and/or REXX. Have you seen something with Assembler?

If you are talking about the source for some IBM proprietary code, i suspect the source would not be readily available.

Why not just use SYSDSN as provided?
telesimke (IS/IT--Management)
20 Apr 12 3:55
I would like to write a program that behaves like REXX external function SYSDSN.
In order to call SYSDSN from assembler we need to create a TSO environment. Inefficient in my opinion.  
papadba (MIS)
20 Apr 12 13:30
Might be inefficient, but how many times will this be executed for a given run? The inefficiency may not be enough to matter (or even be detectable. . .

Which data items do you want to retrieve? There may be another way to get what you want.
telesimke (IS/IT--Management)
26 Apr 12 7:40
I found a way of doing this by allocating PDS and then reading the directory (1st 256B).
To bypass allocating I would need to locate the PDS via mcat, ucat and vtoc.
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