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DB2 - Problembeschreibung

Problem IC85858 Status: Geschlossen

INCONSISTENCY IN FILTER FACTOR CALCULATION FOR RANGE PREDICATES VALUES THAT
ARE BEYOND THE LAST HISTOGRAM

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
When range predicate literal values are beyond the highest 
quantile value, filter factor calculation may be incorrect. 
 
For example, suppose the highest quantile value for the column 
DATE is '2012-07-25'. Range predicates (DATE >= '2012-07-25' and 
DATE < '2012-07-26') can result in a combined FF of almost 0 
rather than the FF of the equality predicate DATE = 
'2012-07-25'.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Update to v9.7 Fix Pack 8                                    * 
****************************************************************
Local-Fix:
Use an equality predicate if it is logically equivalent to a set 
of range predicates
verfügbare FixPacks:
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Lösung
First fixed in v9.7 Fix Pack 8
Workaround
keiner bekannt / siehe Local-Fix
Bug-Verfolgung
Vorgänger  : APAR is sysrouted TO one or more of the following: IC85887 
Nachfolger : 
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
13.08.2012
15.04.2013
15.04.2013
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP8
Problem behoben lt. FixList in der Version
9.7.0.8 FixList