|
Problem IC75689
|
Status: Geschlossen |
GENERATING AN EXPLAIN OF A QUERY MIGHT RETURN EXP0021W IN SPATIAL ENABLED ENVIRONMENT. |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problembeschreibung: |
Generating an EXPLAIN of a query might return the following
warning messages in spatial enabled environment.
EXP0021W Table column has no statistics. The column <column
name of spatial coumn> of table
"<schema> "."<table name>" has not had runstats run on it.
This can lead to poor cardinality and predicate filtering
estimates.
This is due to DB2 doesn't collect the statistics for the
spatial extender column. DB2 optimizer should block above
warning message for spatial extender column |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* softwater *
****************************************************************
* PROBLEM DESCRIPTION: *
* Generating an EXPLAIN of a query might return the following *
* *
* warning messages in spatial enabled environment. *
* *
* *
* *
* *
* *
* EXP0021W Table column has no statistics. The column *
* <column *
* name of spatial coumn> of table *
* *
* "<schema> "."<table name>" has not had runstats run on it. *
* *
* This can lead to poor cardinality and predicate filtering *
* *
* estimates. *
* *
* *
* *
* This is due to DB2 doesn't collect the statistics for the *
* *
* spatial extender column. DB2 optimizer should block above *
* *
* warning message for spatial extender column *
****************************************************************
* RECOMMENDATION: *
* move to v97 fp5 *
**************************************************************** |
| Local-Fix: |
|
| verfügbare FixPacks: |
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 fixed in v97 fp5 |
| Workaround |
keiner bekannt / siehe Local-Fix |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 08.04.2011
08.12.2011
08.12.2011 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
9.7.FP5
|
| Problem behoben lt. FixList in der Version |
| 9.7.0.5
|
 |
