Knutson, Sam wrote:
Is there a way to detect a missing link list library?
z/OS continues to be more robust and like OS/390 and MVS/ESA before it will
IPL quite happily if a link list library cannot be found so long as nothing
critical to the operating system was supposed to be in it. We had an
instance where a storage administrator moved a link list library during a
scheduled event and it was referenced by volser in the PROGxx PARMLIB
member. We had a lot of shrapnel flying about after the outage and did not
notice till some production batch jobs began to ABEND S806.
Let's get back to basics on this ...
The library is not "missing". It was simply moved to a new volume.
Because it was referenced in PROGxx by VOLSER, the system could not find
it during the next IPL.
The reason VOLSER was specified in the first place is undoubtedly
because the library is not cataloged in the master catalog!
Perhaps, the correct course of action would be for IBM to improve LNKLST
ADD processing at IPL time to search a connected user catalog,
referenced by HLQ alias from the master catalog, in a manner similar to
what occurs when the system is running.
If user catalogs could be searched at IPL time, VOLSER would not be
needed on LNKLST ADD statements (unless referring to an uncataloged data
set). Cataloged LNKLST libraries could then be moved from one volume to
another without having to remember to manually update PROGxx. The
"missing link library" issue would be avoided altogether.
--
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| Edward E. Jaffe | |
| Mgr, Research & Development | [EMAIL PROTECTED] |
| Phoenix Software International | Tel: (310) 338-0400 x318 |
| 5200 W Century Blvd, Suite 800 | Fax: (310) 338-0801 |
| Los Angeles, CA 90045 | http://www.phoenixsoftware.com |
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