Fixes are available
DB2 Version 9.1 Fix Pack 7 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 5 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 6 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 6a for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 7a for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 8 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 9 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 10 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 11 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12 for Linux, UNIX and Windows
APAR status
Closed as program error.
Error description
Repartition join strategy is not considered in a DPF environment, when DB2_REDUCED_OPTIMIZATION is turned on. This limitation will be relaxed for OUTER JOINS with this fix. Without this fix, large tables or fact table on null producing side can be broadcasted to tuple preserving side, which leads to bad performance of the query.
Local fix
Problem summary
Repartition join strategy is not considered in a DPF environment, when DB2_REDUCED_OPTIMIZATION is turned on. This limitation will be relaxed for OUTER JOINS with this fix. Without this fix, large tables or fact table on null producing side can be broadcasted to tuple preserving side, which leads to bad performance of the query.
Problem conclusion
First fixed in DB2 UDB Version 9.1, FixPak 5
Temporary fix
Comments
APAR Information
APAR number
LI72983
Reported component name
DB2 UDE ESE LIN
Reported component ID
5765F4104
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-02-13
Closed date
2008-06-24
Last modified date
2008-06-24
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 UDE ESE LIN
Fixed component ID
5765F4104
Applicable component levels
R810 PSN
UP
R820 PSN
UP
R910 PSN
UP
R950 PSN
UP
Document Information
Modified date:
14 October 2021