Peter,
 We don't use the LNKLSTxx any longer.
 We do use Dynamic APF list through the PROGxx member.
Roy

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Peter Relson
Sent: Thursday, December 11, 2014 8:12 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: PROGxx vs LNKLSTxx, and APF FORMAT(DYNAMIC)

Curiosity/Impact questions

PROGxx has existed for almost 25 years, and support within there for dynamic 
LNKLST for almost 20 years.

We're looking at some new work for which we likely won't change the LNKLSTxx 
path, thus requiring use of PROGxx for defining the LNKLST in order to use the 
new functionality.

So,
-- are folks still using LNKLSTxx
-- why? (this could include lack of need to change)
-- if you are using it, do you have concerns with changing?
-- are you aware of the CSVLNKPR exec (in samplib) that exists to create a 
PROGxx member from a LNKLSTxx member?

The default for APF processing has never changed from "static table"
(there's a "dynamic format" operation to make it dynamic, but it's best if that 
is identified during IPL to avoid wasting space). Are folks using a dynamically 
format APF list? (i.e., the APF FORMAT(DYNAMIC) statement in PROGxx, or SETPROG 
APF,FORMAT=DYNAMIC)?

When we implemented dynamic APF, there were a few IBM and ISV products that 
needed to be enhanced to accommodate it, so we could not unconditionally change 
to dynamic format. I hope that all such problems have long ago been resolved, 
but we have still left control in the hands of the customer. Note that you can 
switch to dynamic after IPL, but it is a bit "better" to have identified during 
IPL that the format is dynamic if you have no problem areas remaining that 
require the static format.

Thanks.

Peter Relson
z/OS Core Technology Design

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