DB2 - Problembeschreibung
Problem IC84457 | Status: Geschlossen |
A FULL SCAN OF AN MDC TABLE MIGHT BE CHOSEN WHEN THERE IS A LARGE NUMBER OF OVERFLOW RECORDS | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 | |
Problembeschreibung: | |
The optimizer might favor a full scan of a multidimensional clustering (MDC) table when there are a large number of overflow records present in the table. Poor performance will be noticed and the explain of the query shows a full scan of the MDC table. | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * A FULL SCAN OF AN MDC TABLE MIGHT BE CHOSEN WHEN THERE IS A * * LARGE NUMBER OF OVERFLOW RECORDS. * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 Version 10.1 Fix Pack 1. * **************************************************************** | |
Local-Fix: | |
A reorg of the table in question will remove the overflow records and problem can be circumvented once statistics are collected after the reorg is performed. | |
verfügbare FixPacks: | |
DB2 Version 10.1 Fix Pack 1 for Linux, UNIX, and Windows | |
Lösung | |
First fixed in DB2 Version 10.1 Fix Pack 1. | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 14.06.2012 10.12.2012 10.12.2012 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
Problem behoben lt. FixList in der Version | |
10.1.0.1 | |
10.5.0.1 |