APAR status
Closed as program error.
Error description
Creating a multi-fact query using DQM in 10.2.1 generates a FULL OUTER JOIN with an IS NOT DISTINCT clause. This is causing a huge performance issue.??e.g. the generated Cognos SQL will contain the following :??FROM FS1 FULL OUTER JOIN FS2?ON FS1.CURRENT_YEAR IS NOT DISTINCT FROM FS2.CURRENT_YEAR??and the Native SQL will contain :??FROM "FS1" FULL OUTER JOIN "FS2" ON "FS1"."CURRENT_YEAR" = "FS2"."CURRENT_YEAR" OR ("FS1"."CURRENT_YEAR" IS NULL AND "FS2"."CURRENT_YEAR" IS NULL)??If the SQL is run without the OR ("FS1"."CURRENT_YEAR" IS NULL AND "FS2"."CURRENT_YEAR" IS NULL) clause then the query completes in 3 seconds but with this clause in place, it times out after 10 minutes.??In previous versions the IS NOT DISTINCT clause was not generated and there was no performance problem. ??
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All Users * **************************************************************** * PROBLEM DESCRIPTION: * * See error description. * **************************************************************** * RECOMMENDATION: * * Upgrade to IBM Cognos Business Intelligence 10.2.1 Fix Pack * * 4 * ****************************************************************
Problem conclusion
Code Fix
Temporary fix
Comments
APAR Information
APAR number
PI17400
Reported component name
COG FRAMEWRK MG
Reported component ID
5724W12FM
Reported release
A21
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-05-06
Closed date
2014-08-15
Last modified date
2014-08-15
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
COG FRAMEWRK MG
Fixed component ID
5724W12FM
Applicable component levels
RA21 PSN
UP
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Document Information
Modified date:
15 August 2014