DB2 - Problembeschreibung
Problem IC97760 | Status: Geschlossen |
QUERY PERFORMANCE ISSUE DUE TO STATISTICS PREVENTING PUSHDOWN OF JOINS | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
Problembeschreibung: | |
Query containing UNION ALL join, may perform badly due to statistics which prevent the push down of joins. This is a costing issue. The push-down makes progress only when query rewrite thinks the estimated join cardinality is not more than the outer LEFT OUTER JOIN. | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * All users on DB2 V105 FP2 and lower * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 Cancun Release 10.5.0.4 (also known as Fix * * Pack 4) or higher. * **************************************************************** | |
Local-Fix: | |
verfügbare FixPacks: | |
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows | |
Lösung | |
Fixed in DB2 Cancun Release 10.5.0.4 | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 19.11.2013 09.09.2014 25.09.2014 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
Problem behoben lt. FixList in der Version | |
10.5.0.4 |