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DB2 - Problem description

Problem IC79863 Status: Closed

DB2 MAY ABEND WHEN THERE ARE MULTIPLE REPLICATED MQT AND
FORCE_REPLICATED_MQT_MERGE IS SET

product:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problem description:
When the following conditions are all met,  compiling a query or 
modifying statement may trap with stack: 
 
sqlnq_qtboprparent::op 
sqlnq_mch::is_maximal 
sqlnq_som::compute_matchinfo_opt 
sqlnr_compute_matchinfo 
sqlnr_optprep 
sqlnr_optprep_action 
 
 
(1) There are at least two replicated MQT (Materialized Query 
Table) and at least one non-replicated optimizer MQT or 
statistical view. An optimizer MQT is such MQT whose definition 
is simply "SELECT <expression list> FROM <one or more base 
tables> WHERE <predicates>". 
(2) Registry variable DB2_EXTENDED_OPTIMIZATION includes flag 
FORCE_REPLICATED_MQT_MERGE. 
(3) The query statement itself contains multiple subqueries, or 
the modifying statement's target table has multiple enforced 
checking constraint defined.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* N/A                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.7 Fix Pack 6.                       * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
Fixed on DB2 Version 9.7 Fix Pack 6.
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
17.11.2011
26.04.2012
26.04.2012
Problem solved at the following versions (IBM BugInfos)
9.7.FP6
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.9 FixList
9.7.0.6 FixList
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