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DB2 - Problem description
| Problem IC98510 | Status: Closed |
DB2LOOK -M GENERATES RUNSTATS COMMAND WITH WRONG "NUM_FREQVALUES-1 NUM_QUANTILES -1" OPTIONS | |
| product: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
| Problem description: | |
When use db2look mimic mode (-m) against a table which has
distribution statistics collected on specific columns, the
RUNSTATS command generated by db2look -m will include all
columns in the "WITH DISTRIBUTION ON COLUMNS" clause with
"NUM_FREQVALUES -1 NUM_QUANTILES -1" option for the columns
which have no distribution statistics collected.
Reproduce steps:
-> db2 "CREATE TABLE SAMPLE.T1 (
"C1" INTEGER NOT NULL ,
"C2" VARCHAR(100) ,
"C3" VARCHAR(100) )"
DB20000I The SQL command completed successfully.
-> db2 "insert into t1 values(1,'John','Smith'),(2, 'Tom',
'Jones'), (3,'Jack', 'Levis')"
DB20000I The SQL command completed successfully.
-> db2 " runstats on table sample.t1 with distribution on
columns(c3)"
DB20000I The RUNSTATS command completed successfully.
-> db2look -d sample -e -m -t t1
In the script, the RUNSTATS command likes below:
-- Mimic table T1
RUNSTATS ON TABLE "SAMPLE"."T1"
WITH DISTRIBUTION ON COLUMNS (
"C1" NUM_FREQVALUES -1 NUM_QUANTILES -1,
"C2" NUM_FREQVALUES -1 NUM_QUANTILES -1,
"C3" NUM_FREQVALUES 3 NUM_QUANTILES 3); | |
| Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * All * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to db2 Version 10.5 FixPack 4 * **************************************************************** | |
| Local Fix: | |
Before execute the script, manually remove those columns from "WITH DISTRIBUTION ON COLUMNS" | |
| available fix packs: | |
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows | |
| Solution | |
Problem was first fixed in Version 10.5 FixPack 4 | |
| Workaround | |
not known / see Local fix | |
| Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 27.12.2013 08.09.2014 08.09.2014 |
| Problem solved at the following versions (IBM BugInfos) | |
| Problem solved according to the fixlist(s) of the following version(s) | |
| 10.5.0.4 |
|