|
Problem IC69515
|
Status: Closed |
EXECUTION OF SQL STATEMENT WITH DBPARTITIONNUM IS NOT PARALLELIZED FOR CERTAIN SCENARIOS IN DPF |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
This issue only applies if you are using the database
partitioning feature (DPF).
SQL statements that include an order on DBPARTITIONNUM or an
OLAP function that includes DBPARTITIONNUM in the partition by
clause are not parallelized, executing on a single database
partition in the partition group. The following are examples
that illustrate the two scenarios:
1. order on DBPARTITIONNUM
select dbpartitionnum(y), x from t order by 1;
2. DBPARTITIONNUM in PARTITION BY clause
select max(x) over (partition by dbpartitionnum(y) order by 1)
from t; |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users using the database partitioning feature (DPF) are *
* affected. *
****************************************************************
* PROBLEM DESCRIPTION: *
* This issue only applies if you are using the database *
* *
* partitioning feature (DPF). *
* *
* *
* *
* SQL statements that include an order on DBPARTITIONNUM or an *
* *
* OLAP function that includes DBPARTITIONNUM in the partition *
* by *
* clause are not parallelized, executing on a single database *
* *
* partition in the partition group. The following are *
* examples *
* that illustrate the two scenarios: *
* *
* *
* *
* 1. order on DBPARTITIONNUM *
* *
* *
* *
* select dbpartitionnum(y), x from t order by 1; *
* *
* *
* 2. DBPARTITIONNUM in PARTITION BY clause *
* *
* *
* *
* select max(x) over (partition by dbpartitionnum(y) order by *
* 1) from t; *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 version 9.7 Fix Pack 3 *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Problem was first fixed in version 9.7 Fix Pack 3 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC69825
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 29.06.2010
23.09.2010
23.09.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP3
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.3
|
 |
| 9.7.0.3
|
|
