Re: System Library List Changing -- MIDRANGE-L

Folks:

JBakerii@aol.com wrote:

>
>
> The PTF's are SF42454 and SF42455.  We are on V3R2, and were currnet with all
> PTF's as far as we knew.  I have not seen the cover letters for these PTF's,
> but the operations supervisor say they cover a lot of stuff.

I reproduce portions of the cover letter below.  Seems like a very dangerous
mission critical problem resolution.  I am getting the PTFs and applying pronto.


  A variety of problems have occurred whereby the indication
  is that certain objects on the system are corrupted.  The
  origin of the corruption has been linked to the termination
  of query requests which were implemented with either or both
  of UNION and/or SORT temporary results.  The termination can
  be by an ENDRQS, ENDJOB, or a VLIC function check; meaning
  the termination was abnormal rather than a clean-exit.

  More keywords for problem origin:
   SYSREQ-2 SYSREQ2 ENDRQS CANCEL QRY OPNQRYF STRQMQRY
   SQL SQLRUN QRYRUN RUNQRY WRKQRY STRSQL STRQM PRTDSKINF
   QRY400 QUERY400 MSGMCH3203 RC1716 or RC0306 or RC0307
   typically MCH3203 F/#CFASUME T/QDBGETM X/0296

  Many times the problem will produce an extended joblog of
  sometimes thousands of pages of errors in programs QQQQEXIT,
  QQQTSORT, QDMCLOSE, and QDMERRHP.  During this time the
  system may encounter a joblog wrapped or job terminated due
  to job message queue full condition, plus sometimes several
  VLIC function check VLogs for the errors encountered.

  More keywords for typical conditions after problem origin:
   VL02000306 IXPTN18 IAR1ABE x/1ABE T/QQQQEXIT  TIDYUP
   VL02000306 IXPTN18 IAR051C x/051C T/QDMERRHP  X/0012
   See MSGMCH3402 T/QDMCLOSE MSGCPF2524 &MSGCPF4510 plus some
   MSGMCH0606 and a MSGMCH4407 F/#DOMTINA sometimes in VLogs.
   Often following the error will be VL06001C85 for #DBCDSEH
   albeit an innocuous condition.


  Symptoms of corruption are listed by the type of corruption.
>> System value corruption

 **note** A problem with system value corruption had been
          reported and supposedly solved by changes to some
          query PTFs which added new system values during
          V3R1M0.  This is _not_ that problem; though that
          problem may have really been this problem.

The most common system value corruption was with QUSRLIBL
whereby the library name QGPL became QgPL or QGpL; and too
for any other library in the list.  The corruption problem
is generally a lower case letter <when expected to be upper
case>.  The spooled joblog for SCPF shows the condition of
MSGMCH3401 F/#MNRCTX x'0401' which then effects MSGCPF0987
F/QWCISCFR T/QSYSOPR during the IPL.  Similarly this could
occur for QSYSLIBL effecting MSGCPF0985 instead during IPL.

 More keywords for system value corruption:
  LOWERCASE UPPERCASE BITON BITOFF SYSVAL QWMSYSVAL DSPSYSVAL
  WRKSYSVAL CHGSYSVAL MSGCPF1030 attempting to correct a system
  value for which change is not supported

 Other system values believed to have been affected by this
 problem <not meaning to imply these are the only possible>,
 but for which additional symptoms have not been noted, but
 for which keywords can be searched:
  QAUDLVL
  QCONSOLE  <eg. as DjP01>
  QMODEL


 >> Associated space of system program QDMCOPEN corrupted

 After this corruption there may be many failures to open
 device files, all with the symptoms below.

..... many more pages after this....


--
Thank You.

Regards

Dave Mahadevan.. mailto:mahadevan@fuse.net


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