DB2 - Problem description
Problem IT26517 | Status: Closed |
DB2 MAY ABEND WHILE COMPILING A QUERY THAT MAY PRODUCE A STAR SCHEMA JOIN | |
product: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
Problem description: | |
Db2 may abend while compiling a query that may produce a star schema (zigzag) join. An example portion of the stack trace is seen below: sqlno_zzjn_is_current_index_better sqlno_choose_fact_table_index sqlno_generate_single_fact_zzjn sqlno_generate_zzjn_plans sqlno_planning_phase | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * All * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 version 10.5 Fix Pack 11 * **************************************************************** | |
Local Fix: | |
Disable zig-zag join using: $ db2set -im DB2_REDUCED_OPTIMIZATION='ZZJN OFF' | |
Solution | |
Workaround | |
not known / see Local fix | |
BUG-Tracking | |
forerunner : follow-up : IT26586 | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 04.10.2018 10.03.2020 10.03.2020 |
Problem solved at the following versions (IBM BugInfos) | |
Problem solved according to the fixlist(s) of the following version(s) |