IBM Support

MF62131 - LIC-DB-OTHER-PERFM Normal vary on of independant ASP may tak

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

LIC-DB-OTHER-PERFM Normal vary on of independant ASP may tak


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
CO   5770999  V7R3M0    MF62010   00/00    0000



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

-----------------------------------------------
To support query optimization for I/O costing, an average read
response time value is computed for each DASD unit in a given
independent ASP.  These average read response times are archived
in a permanent segment as there is sufficient traffic to a given
unit.  If the traffic is low enough that no archival occurs,
then on a subsequent vary on, read traffic will be generated for
the initial average read response time computation; however,
these artificially generated values are not archived.  This
(re)calibration can cause a noticeable delay in a subsequent
independent ASP vary on, especially when a large numbers of
units exist.

CORRECTION FOR APAR MA45668 :
-----------------------------
The values that are artificially generated at independent ASP
vary on time will be archived in the permanent segment.  This
ensures that even if little read traffic is naturally generated
from the units while varied on, a subsequent vary on can seed
the average read response times from the archived values,
speeding up vary on processing.

CIRCUMVENTION FOR APAR MA45668 :
--------------------------------
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
--------------  ------------------------------------------------------------
   MF62001      OSP-DB-OTHER-UNPRED TEMPORARY STORAGE MAY OCCASIONALLY BE OR
   MF60959      LIC-DB-OTHER-UNPRED Internal Database Maintenance

Summary Information

System..............................  i
Models..............................  
Release.............................  V7R3M0
Licensed Program....................  5770999
APAR Fixed..........................  View details for APAR MA45668
Superseded by:......................  View fix details for PTF MF70015
Recompile...........................  N
Library.............................  QSYS
MRI Feature ........................  NONE
Cum Level...........................  C6299730


IBM i Support

IBM disclaims all warranties, whether express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. By furnishing this document, IBM grants no licenses to any related patents or copyrights. Copyright © 1996,1997,1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 IBM Corporation. Any trademarks and product or brand names referenced in this document are the property of their respective owners. Consult the Terms of use link for trademark information.

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"7.3.0","Product":{"code":"SWG60","label":"IBM i"},"Component":"5770999","Edition":"","Line of Business":{"code":"LOB57","label":"Power"}}]

Document Information

Modified date:
17 June 2022