I think maybe the assumption is no one is using 
LIBRARIES(-LNKLST-) in the CSVLLA00 member ? 
MIGLIB and LINKLIB (SYS1) are automagically added to linklib so I think this is 
why LLA's GOT 'EM 


Carmen Vitullo 

----- Original Message -----

From: "John McKown" <john.archie.mck...@gmail.com> 
To: IBM-MAIN@LISTSERV.UA.EDU 
Sent: Wednesday, June 12, 2019 8:05:15 AM 
Subject: Re: SYS1.MIGLIB and LNKLST 

On Wed, Jun 12, 2019 at 7:49 AM Peter Relson <rel...@us.ibm.com> wrote: 

> >I never apply maintenance to a running system. 
> 
> If true, then it sounds like your case is the exact one for which LNKLST 
> UNALLOCATE and LNKLST ALLOCATE were created. 
> You are (I hope) enlarging an uncataloged-on-this-system SYS1.MIGLIB data 
> set. 
> And the only problem would have been the running system's ENQ on the 
> running system's SYS1.MIGLIB data set. 
> So you use LNKLST UNALLOCATE. 
> Then you do whatever you want with your uncataloged data set. 
> 
> There would have been no reason to stop LLA. 
> 

Curious. I have a "WHOHAS" which shows SYSDSN enqueues on a DSN. On both a 
z/OS 1.12 and 2.3 system, it shows: 

sys1.miglib, 
OWNERS= 2 ,WAIT EXCLUSIVE= ,WAIT SHARED=, 
JOBNAME=XCFAS ,TYPE=OWNER ,USE=SHARED, 
JOBNAME=LLA ,TYPE=OWNER ,USE=SHARED, 
ENTER DSNAME WITHOUT QUOTES - NO LEADING BLANKS, 




> 
> But if you are playing with LNKLST SETs then either you shouldn't be or 
> your initial statement is not true. 
> 
> There is no way to remove SYS1.MIGLIB from a LNKLST set. You would have 
> had to IPL with a SYSLIB MIGLIB statement. 
> 
> And while you appear to have lucked out in whatever you did, you put your 
> system at risk while you were doing it. 
> 
> Peter Relson 
> z/OS Core Technology Design 
> 
> 
-- 
This is clearly another case of too many mad scientists, and not enough 
hunchbacks. 


Maranatha! <>< 
John McKown 

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