|
Problem IC74076
|
Status: Geschlossen |
INCORRECT FILTER FACTOR CALCULATION FOR SYSIBM.DAYNAME AND SYSIBM.MONTHNAME FUNCTIONS |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problembeschreibung: |
The optimizer incorrectly estimates the filter factor of
predicates that reference the SYSIBM.DAYNAME or SYSIBM.MONTHNAME
function. This might lead to the optimizer choosing a
non-optimal query execution plan. |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* The optimizer incorrectly estimates the filter factor of *
* *
* predicates that reference the SYSIBM.DAYNAME or *
* SYSIBM.MONTHNAME *
* function. This might lead to the optimizer choosing a *
* *
* non-optimal query execution plan. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix Pack 4. *
**************************************************************** |
| Local-Fix: |
Use SYSFUN.DAYNAME and SYSFUN.MONTHNAME in place of
SYSIBM.DAYNAME and SYSIBM.MONTHNAME respectively. |
| verfügbare FixPacks: |
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
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 |
This is first fixed in DB2 Version 9.7 Fix Pack 4. |
| Workaround |
See Local Fix. |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 24.01.2011
28.04.2011
28.04.2011 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
9.7.FP4
|
| Problem behoben lt. FixList in der Version |
| 9.7.0.4
|
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