APAR status
Closed as program error.
Error description
12.10 server generates slow ANSI join query plan comparing with 11.50. Selectivity varies if distributions are present or not. Related to table reordering with ANSI JOINs. If SQL_FEAT_CTRL2 bit 0x4 DISABLE_LVL0_REORDER to disable idsdb00505160 is set then behavior resembles 11.50
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of IDS prior to 12.10.xC13. * **************************************************************** * PROBLEM DESCRIPTION: * * 12.10 server generates slow ANSI join query plan compared to * * 11.50. * **************************************************************** * RECOMMENDATION: * ****************************************************************
Problem conclusion
Fixed in IDS 12.10.xC13.
Temporary fix
Comments
APAR Information
APAR number
IT30036
Reported component name
INFORMIX SERVER
Reported component ID
5725A3900
Reported release
C10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-08-19
Closed date
2019-10-03
Last modified date
2019-10-03
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
INFORMIX SERVER
Fixed component ID
5725A3900
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
03 October 2019