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MF69037 - OSP-DB-OTHER-UNPRED LOGICAL READ COUNT INCORRECT

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-DB-OTHER-UNPRED LOGICAL READ COUNT INCORRECT


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
CO   5770999  V7R3M0    MF68467   00/00    0000
CO   5770999  V7R3M0    MF68468   00/00    0000
CO   5770999  V7R3M0    MF66117   00/00    0000
CO   5770999  V7R3M0    MF66118   00/00    0000
CO   5770999  V7R3M0    MF66119   00/00    0000
CO   5770999  V7R3M0    MF66123   00/00    0000
CO   5770999  V7R3M0    MF66124   00/00    0000
CO   5770999  V7R3M0    MF66125   00/00    0000
CO   5770999  V7R3M0    MF66126   00/00    0000



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APAR Error Description / Circumvention

-----------------------------------------------
Under some circumstances, DSPFD does show a huge number of
logical reads which will grow very fast.

CORRECTION FOR APAR MA49235 :
-----------------------------
An earlier change to improve performance of the logical I/O
count increment did not include a few modules that needed to
recompile due to a counter size change.  This likely caused the
erroneous logical I/O counts that have been displayed in a dspfd
of a table (file).

CIRCUMVENTION FOR APAR MA49235 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


Any erroneous Logical Reads value displayed by a dspfd will only be
corrected after an IPL.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF68653      OSP-OTHER-PERFM KEY ROW POSITIONING, LIKE RPG CHAIN, MAY SPE
   MF68621      LIC-DB-OTHER-UNPRED Internal Database Maintenance
   MF68466      LIC-DB-OTHER-PERFM Native positioning hot cacheline reductio
   MF68052      OSP-DB-OTHER-INCORROUT PROGRAM READS RECORD NUMBERS OUT OF S
   MF66773      OSP-THREADS-PERFM LOCK WAIT LONGER THAN EXPECTED
   MF66045      LIC-DB-OTHER MSGCPF5032 INTERMITTENT LOCK TIME-OUT IN MULTI-
   MF66121      OSP-DB-OTHER-PERFM TLBIE RESPONSE TIMES SPIKES AND CACHE LIN
   MF64504      OSP QDBSRVXR JOB LOOPING WHEN RETRIEVING BY KEY DUE TO INCOH
   MF61798      LIC-DB Future release compatibility changes
   MF61604      OSP-DB Performacne scaling (cache line) #dbreten
   MF62810      OSP-DB A JOB MAY CREATE MANY THREADS (THOUSANDS) IF CQE USES
   MF61859      OSP-DB Performance scaling (cache line) #dbscblk
   MF61809      LIC-DB Future release compatibility changes

Summary Information

System..............................  i
Models..............................  
Release.............................  V7R3M0
Licensed Program....................  5770999
APAR Fixed..........................  View details for APAR MA49235
Superseded by:......................  
Recompile...........................  N
Library.............................  QSYS
MRI Feature ........................  NONE
Cum Level...........................  C2132730


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Document Information

Modified date:
24 May 2022