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Problem IT19881
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Status: Closed |
DB2 MAY DEPICT PERFORMANCE DESCRIPTION WHEN IS NOT NULL AND IN/LIKE PREDICATE ARE USED
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| product: |
DB2 FOR LUW / DB2FORLUW / B10 - DB2 |
| Problem description: |
DB2 may depict performance degradation when the following
conditions are satisfied:
1. The query has multiple joins
2. There is an IS NOT NULL predicate
3. There is an IN/LIKE predicate using the same column used in
IS NOT NULL predicate |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Db2 11.1 Mod 4 Fixpack 4 or higher *
**************************************************************** |
| Local Fix: |
Use optimization level 3 in the optimization guideline:
/*
*/; |
| Solution |
|
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : IT19030
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 27.03.2017
27.11.2018
27.11.2018 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
