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MF66234 - OSP-DB INDEXES IN DELAYED MAINTENANCE WILL DO A FULL REBUILD

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-DB INDEXES IN DELAYED MAINTENANCE WILL DO A FULL REBUILD


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   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.

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REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
Indexes in delayed maintenance will do a full rebuild when
opened vs update from the delayed maintenance log. Using the
delayed maintenance log can be faster.

CORRECTION FOR APAR MA47402 :
-----------------------------
There are multiple conditions for switching out of delayed
maintenance mode: index size, dm log size, data size, number of
changes, number of rows, etc.   The algorithm, used to switch
out of delayed maintenance logging mode, will be enhanced to
take into account a higher factor of deleted rows.

CIRCUMVENTION FOR APAR MA47402 :
--------------------------------
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
--------------  ------------------------------------------------------------
   MF64362      F/#DBXGDER-MSGMCH3601 ALTER TABLE FOR COLUMN ADDING A FIELD
   MF59214      OSP-DB Internal tuning - Delayed Maintenance Indexes/Access
   MF58817      OSP-DB internal threshold tuning for database delayed mainte
   MF58254      OSP-DB Data Space Index Catch-up Enhancements

Summary Information

System..............................i
Models..............................
Release.............................V7R2M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA47402
Superseded by:......................
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C9297720


IBM i Support

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Document Information

Modified date:
12 June 2019