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MF56501 - LIC-DB-OTHER-PERFM PERFORMANCE DEGRADATION FOR LARGE DELETE

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-DB-OTHER-PERFM PERFORMANCE DEGRADATION FOR LARGE DELETE


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
A delete statement which is deleting a large number of rows from
a large table over which indexes exist may experience a
performance degradation.

CORRECTION FOR APAR MA42536 :
-----------------------------
This PTF will limit the force of the recycle index during
periods of high activity to alleviate some of the performance
degradation.

CIRCUMVENTION FOR APAR MA42536 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF56146      LIC-DB-OTHER-LOOP DBIOXX CONSUMING CPU #DBRECYC, EOJ STUCK,
   MF51373      OSP-DB #dbrecyc diagnostics improved and recix max limit inc
   MF49872      OSP- MSGMCH1210-F/CBLABRANCH-T/QDBEXDME DSPFD GETS MCH1210

Summary Information

System..............................i
Models..............................
Release.............................V6R1M1
Licensed Program...............5761999
APAR Fixed..........................View details for APAR MA42536
Superseded by:......................View fix details for PTF MF60259
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C3312610


System i Support

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Document Information

Modified date:
21 January 2013