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Problem IC96228
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Status: Closed |
RUNSTATS WITH BERNOULLI SAMPLING ON A COLUMN-ORGANIZED TABLE PRODUCES INCORRECT STATISTICS |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
If you use the BERNOULLI sampling option of the RUNSTATS command
to collect statistics on a column-organized table, the
statistics computed will be incorrect. The following is an
example RUNSTATS command using the BERNOULLI sampling option:
RUNSTATS ON TABLE T1 WITH DISTRIBUTION TABLESAMPLE BERNOULLI
(20) |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 10.5 Fix Pack 1 *
**************************************************************** |
| Local Fix: |
You can use the SYSTEM sampling option or no sampling option to
avoid this problem. |
| available fix packs: |
DB2 Version 10.5 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 9 for Linux, UNIX, and Windows
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| Solution |
Problem was first fixed in DB2 Version 10.5 Fix Pack 1. After
installing DB2 10.5 Fix Pack 1, RUNSTATS with Bernoulli sampling
on column organized tables produces correct statistics. |
| Workaround |
See Local Fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 25.09.2013
27.02.2014
27.02.2014 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.3
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| 10.5.0.3
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