DB2 - Problembeschreibung
| Problem IC95356 | Status: Geschlossen |
GRAPH GENERATED WITH 'DB2EXPLN -G' DOES NOT CONTAIN STATISTICS | |
| Produkt: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
| Problembeschreibung: | |
When an explain plan is generated using 'db2expln -g' command,
it does not contain the cost and the cardinality estimate for
its operators. This can be demonstrated with a simple example as
seen below:
db2expln -d sample -t -g -q "values current timestamp"
******************** DYNAMIC
***************************************
==================== STATEMENT
==========================================
Isolation Level = Cursor Stability
Blocking = Block Unambiguous Cursors
Query Optimization Class = 5
Partition Parallel = No
Intra-Partition Parallel = No
SQL Path = "SYSIBM", "SYSFUN",
"SYSPROC", "SYSIBMADM"
Statement:
values current timestamp
Section Code Page = 1208
Estimated Cost = 0.004800
Estimated Cardinality = 1.000000
Table Constructor
| 1-Row(s)
Return Data to Application
| #Columns = 1
End of section
Optimizer Plan:
Operator
(ID)
RETURN
( 1)
|
TBSCAN
( 2)
|
TFunc:
SYSIBM
GENROW | |
| Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * Users below V10.5fp3 * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Update to 10.5.0.3 * **************************************************************** | |
| Local-Fix: | |
| verfügbare FixPacks: | |
DB2 Version 10.5 Fix Pack 3 for Linux, UNIX, and Windows | |
| Lösung | |
Problem Fixed In 10.5.0.3 | |
| Workaround | |
keiner bekannt / siehe Local-Fix | |
| Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 27.08.2013 04.03.2014 04.03.2014 |
| Problem behoben ab folgender Versionen (IBM BugInfos) | |
| Problem behoben lt. FixList in der Version | |
| 10.5.0.3 |
|
| 10.5.0.3 |
|