APAR status
Closed as program error.
Error description
Incorrect results may be returned for a query using two or more tables in a join operation where these conditions exist: At least one of the tables has a primary key. All columns of the primary key have an equality predicate in the query. The table is used in a hash join. The table is accessed using an index that is not the primary key index. This behavior is first seen in IDS 11.50.xC4.
Local fix
Use optimizer directives: - to avoid use of the index that is not the primary key in the dynamic hash join - or to avoid the dynamic hash join
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of IDS 11.50.xC4 and IDS 11.50.xC5. * **************************************************************** * PROBLEM DESCRIPTION: * * When a table has a primary key, and all the columns of the * * primary key have an equality predicate in a query, and the * * table is used on the build side of a hash join, and the * * table is accessed using an index that is NOT the primary key * * index, then potentially wrong result can occur for the * * query. * **************************************************************** * RECOMMENDATION: * * Upgrade to IDS 11.50.xC6 and above. * ****************************************************************
Problem conclusion
The problem was first fixed in IDS 11.50.xC6.
Temporary fix
Comments
APAR Information
APAR number
IC62172
Reported component name
IBM IDS ENTRP E
Reported component ID
5724L2304
Reported release
B15
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-07-22
Closed date
2010-01-22
Last modified date
2010-01-22
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
IBM IDS ENTRP E
Fixed component ID
5724L2304
Applicable component levels
RB15 PSN
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"B15","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
Document Information
Modified date:
22 January 2010