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https://www.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.admin.cmd.doc/doc/r0004503.html
The db2support tool is invoked in the optimizer mode in one of the following ways: As an SQL statement from a command line. db2support output_directory-d database_name-st sql_statement. The db2support tool stores the query in the optimizer directory by copying the query into the file called bad_query.sql. As an SQL statement stored in a file.
https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.admin.cmd.doc/doc/r0004503.html
The db2support command that is included with Db2® installation images supports only a subset of the command parameters that are available after you install the Db2 product. Until you install the Db2 product, the only db2support command parameters that you can use are the -install and …
http://www-01.ibm.com/support/docview.wss?uid=swg21573020
Answer. When collecting optimizer data with the db2support tool, there are a number of options available and the most appropriate options to use will depend on the situation that needs to be diagnosed. This article will discuss the more common options and what should be considered when choosing to use a given option.
https://support.quest.com/sql-optimizer-for-db2-luw/4.3.1
Quest SQL Optimizer for DB2 LUW maximizes SQL performance by automating the manual, time-intensive and uncertain process of ensuring that SQL statements are performing as fast as possible. Refer to the Quest SQL Optimizer for DB2 LUW 4.3.1 Release Notes to see what's new in this release.
https://support.quest.com/sql-optimizer-for-db2-luw/4.3/download-new-releases
SQL Optimizer for DB2 LUW - Download Software. Filter to locate your software, patches, utilities or hot fixes (Choose different product) There are no assets listed for the product you selected. We do not provide patches or new release for versions or products that are …
http://www-01.ibm.com/support/docview.wss?uid=swg1IC91488
First fixed in DB2 version 10.1 Fix Pack 3. Starting from this version isolation level used by db2support tool can be specified via "-il" switch, which previously was applicable only to optimizer mode ("-st", "-sf").
http://intelligentsystemsmonitoring.com/community/db2support-d-database-sf-script-sql-cl-1-fails-with-rc-1/
May 01, 2017 · db2support . -d DATABASE -sf script.sql -cl 1 fails with RC -1 May 1, 2017 May 1, 2017 IBM Customer Community The attempt to collect the db2support with Optimizer information on DB2 Server fails with RC -1 during the CONNECT phase:
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http://www.redbooks.ibm.com/abstracts/redp5445.html
This paper describes the enhancements delivered specifically by the query processing engine of DB2. This engine is generally called the optimizer or the Relational Data Services (RDS) components, which encompasses the query transformation, access path selection, run time, and parallelism.
https://www.redbooks.ibm.com/redpapers/pdfs/redp5445.pdf
2 DB2 12 for z Optimizer DB2 12 for z/OS also delivers improvements targeted at OLTP applications, which are the realm of the Data Manager, Index Manager, and Buffer Manager components (to name a few), and are not identified here. Although the performance measurement focus is based on reducing CPU, improvement in
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