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Problem IT08490
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Status: Closed |
COMPLEX QUERIES REFERENCING COLUMN ORGANIZED TABLES MAY EXPERIENCE SLOW PREPARE TIME |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
Complex queries referencing column organized tables may
experience slow prepare time when the queries involve common
table expressions, views or nested sub-selects with multiple
levels and include local predicates or subqueries referencing
the nested objects. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 V10.5 FP6 *
**************************************************************** |
| Local Fix: |
When possible rewriting the query so that the predicates or
subqueries are pushed down to the base table accesses can
improve prepare time. |
| Solution |
Fixed in DB2 V10.5 FP6 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 22.04.2015
09.10.2015
09.10.2015 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.6
|
 |
| 10.5.0.7
|
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