|
Problem IC83737
|
Status: Geschlossen |
OPTIMIZER RE-I/O COST ESTIMATION CAN BE INACCURATE FOR IXSCAN-FETCH |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problembeschreibung: |
The Re-I/O Cost estimation can be inaccurate for the FETCH
operator in IXSCAN-FETCH when sequential prefetch is present in
the FETCH operator, and the index is not 100% clustered, and the
index is not fully qualified. Consequently, the Re-Total Cost,
which includes Re-I/O Cost, can be inaccurate too.
This problem was introduced in DB2 v9.5 Fixpack 9. |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* All Platforms *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 v9.5 Fixpack 10 or higher *
**************************************************************** |
| Local-Fix: |
|
| Lösung |
First fixed in DB2 v9.5 Fixpack 10 or higher |
| Workaround |
keiner bekannt / siehe Local-Fix |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 24.05.2012
22.08.2012
22.08.2012 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
9.5.FP10
|
| Problem behoben lt. FixList in der Version |
| 9.5.0.10
|
 |
