|
Problem IC69847
|
Status: Closed |
POSSIBLE SUB-OPTIMAL QUERY PERFORMANCE WITH DB2_WORKLOAD SET TO SAP AND CATALOG TABLE STRING COLUMN(S) USED IN COMPARISON(S) |
| product: |
DB2 FOR LUW / DB2FORLUW / 980 - DB2 |
| Problem description: |
In SAP environments, controlled with the DB2_WORKLOAD registry
variable set to a value of SAP, poor query performance may be
experienced when catalog tables are used. Additional conditions
are:
- Database collation is IDENTITY_16BIT
- A column from a catalog table is used in a relational operator
for comparison
- The catalog table column is a string column, i.e., CHAR or
VARCHAR
- There is a filtering index available on the other column used
in the comparison |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Problem Description above. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.8 Fix Pack 4 *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
DB2 Version 9.8 Fix Pack 4 for AIX and Linux
DB2 Version 9.8 Fix Pack 5 for AIX and Linux
|
| Solution |
First fixed in DB2 Version 9.8 Fix Pack 4 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 12.07.2010
02.08.2011
02.08.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.8.FP4
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.8.0.4
|
 |
