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Problem IT22210
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Status: Closed |
QUERY PERFORMANCE ISSUE WITH SMP PARALLELISM AND "LIMIT ?" CLAUSE
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| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
Query performance issue with SMP/intra partition parallelism
(INTRA_PARALLEL YES) and "LIMIT ?" clause.
In case of "LIMIT N" clause that uses a host variable (?) for N,
then a performance issue is encountered.
You may observe much more rows_read than what is expected or
when compared to using a literal instead for N. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Problem Description above. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Db2 Version 10.5 Fix Pack 10. *
**************************************************************** |
| Local Fix: |
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| Solution |
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| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner :
follow-up : IT22211 |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 30.08.2017
19.07.2018
19.07.2018 |
| Problem solved at the following versions (IBM BugInfos) |
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| Problem solved according to the fixlist(s) of the following version(s) |
