|
Problem IT01742
|
Status: Closed |
INCORRECT VALUES MIGHT BE INSERTED INTO A TABLE WHEN AN INCORRECT PLAN IS CHOSEN FOR INSERT FROM SELECT |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
Incorrect values might be inserted into a table as a result of
an incorrect plan being chosen for an INSERT from a SELECT.
The problem only occurs when intrapartition parallelism is
enabled via the INTRA_PARALLEL database manager configuration
parameter.
The problem is more likely to occur if all of the following
statements are true:
- The table contains very wide columns -- close to 8KB or
larger.
- The reference to the target table in the subselect is within a
separate query block. In the following example, t1 is the
target table. Note how it is accessed in a separate query block
in the subselect: insert into t1 select t2.* from t2, (select
c00 from (select c00, ROWNUMBER() OVER() RN FROM t1 where c00
is not null) as t WHERE RN BETWEEN 30 AND 33) as TT where t2.c00
<> TT.c00. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 version 10.5.0.4. *
**************************************************************** |
| Local Fix: |
Disable intrapartition parallelism using the INTRA_PARALLEL
database manager configuration parameter. |
| available fix packs: |
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
|
| Solution |
The problem is first fixed in DB2 version 10.5.0.4. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 12.05.2014
08.09.2014
08.04.2015 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.4
|
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