|
Problem IC87968
|
Status: Geschlossen |
POSSIBLE PERFORMANCE REGRESSION FROM SCALAR SUBQUERY PUSH DOWN INTO OUTER JOIN |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problembeschreibung: |
A SQL statement containing a predicate with a scalar subquery
used in the context of >=, >, <=, <, !=, may NOT be pushed down
below Outer Join operations. If the predicate could filter high
number of rows from the table(s) from the outer joins, this
could potentially degrade the performance of the statement.
This problem effects when upgrading from DB2 version 9.1 Fix
Pack 7 or 8, version 9.5 Fix Pack 4 or 5, version 9.7 GA or Fix
Pack 1 to version 9.7 Fix Pack 2 to 7. |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix Pack 8. *
**************************************************************** |
| Local-Fix: |
Upgrade to DB2 version 9.7 Fix Pack 8 |
| 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 Version 9.7 Fix Pack 8. |
| Workaround |
keiner bekannt / siehe Local-Fix |
| Bug-Verfolgung |
Vorgänger : APAR is sysrouted TO one or more of the following: IC89730
Nachfolger : |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 05.11.2012
01.04.2013
01.04.2013 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
9.7.FP8
|
| Problem behoben lt. FixList in der Version |
| 9.7.0.8
|
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