Fixes are available
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod4 Fix Pack4 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 4 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 7 for Linux, UNIX, and Windows
APAR status
Closed as program error.
Error description
- If at least 3 COLUMNAR TABLES ARE JOINED THROUGH CDE NLJNS AND TOP NLJN IS EARLY OUT, then it is possible to get wrong plan where a predicate is evaluated too late in the plan, above early out join. In this case we could loose rows. - An example of a query that might generate a wrong plan: SELECT DISTINCT C1 FROM T1, T2, T3 WHERE (T1.C1 <> T2.C1) AND (T3.C2 <= T2.C2) AND (T1.C3 <= T3.C3)
Local fix
Setting the following undocumented join support registry variable will solve the issue: db2set -im DB2_CDE_ILLEGAL_JOIN_SUPPORT=1
Problem summary
**************************************************************** * USERS AFFECTED: * * Columnar tables only * **************************************************************** * PROBLEM DESCRIPTION: * * Please, See Error Description and install this fix. * **************************************************************** * RECOMMENDATION: * * Please, See Error Description and install this fix. * ****************************************************************
Problem conclusion
Please, See Error Description and install this fix.
Temporary fix
Comments
APAR Information
APAR number
IT20634
Reported component name
DB2 FOR LUW
Reported component ID
DB2FORLUW
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-05-17
Closed date
2018-05-22
Last modified date
2018-05-22
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
DB2 FOR LUW
Fixed component ID
DB2FORLUW
Applicable component levels
RB10 PSY
UP
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
Document Information
Modified date:
04 May 2022