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DB2 - Problem description

Problem IC64986 Status: Closed

GENERATING AN EXPLAIN OF A QUERY MIGHT RETURN EXP0021W IN SPATIAL ENABLED
ENVIRONMENT.

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
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
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* Same as Error Description                                    * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.5 Fix Pack 8.                       * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
First fixed in DB2 Version 9.5 Fix Pack 8.
Workaround
N/A
Comment
N/A
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC67617 IC75689 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
04.12.2009
30.06.2011
30.06.2011
Problem solved at the following versions (IBM BugInfos)
9.5.FP8
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.8 FixList
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