DB2 - Problem description
Problem IT19690 | Status: Closed |
THE SQL USING INDEX WITH REVERSE SCAN WITH INTRA_PARALLEL MAY RUN SLOWER. | |
product: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
Problem description: | |
The SQL doing index reverse scan with intro_parallel enable may run slow. The db2 trace with '-t' option shows you that the highest time spent is for function 'sqliSkipRangeReverse'. The time spent by this function is the key to hit this APAR. | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 10.5 Fix Pack 9 or higher * **************************************************************** | |
Local Fix: | |
Disable Intra_parallel, by db2 update dbm cfg using INTRA_PARALLEL NO | |
Solution | |
First fixed in Db2 10.5 Fix Pack 9 | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 15.03.2017 29.09.2017 29.09.2017 |
Problem solved at the following versions (IBM BugInfos) | |
9.0. | |
Problem solved according to the fixlist(s) of the following version(s) |