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The db2expln utility provides a plain text file only.
Sometimes, OPTPROFILE can be added to tune some terrible SQL. The OPTPROFILE is XML format, but many users is not used to it. If XML format is supported as an option of db2expln then it would ...
In db2look, for mimic stats, option to include commit each X sentences
In order to mimic an environment, the stats are extracted via db2look, and then inserted a regular execution of the generate file. The problem is that the generated updates could be easily more than 15000 sentences and it has two issues: If execut...
DB2 BLU load on LUW provides a less than optimal message for SQL1119W. It reports that an input data value has been replaced by NULL but does not indicate which specific input row caused the error resulting in no good way to troubleshoot the issue...
Adjust F2 criteria for AUTO_REORG on adaptive compressed tables
AUTO_REORG uses reorgchk output, like F2 criteria. The problem is that F2 does not take into account pagelevel dictionary. The size can be important, like 5K out of a 16K page, and therefore F2 criteria is always below the 70%... and tables will k...
Skip REORG evaluation if offline maintenance window equal 1 or 2 hours
Reorg table can be run twice during offline maintenance window. This is not acceptable behavior because it can exhaust the window time on the same table. Secondly, it is also possible to put in queue the same REORG TABLE that will be run the next ...
LOAD utility should allow huge loads to run with out blocking transactional log files
Please let me explain more about how i look at LOAD utility.LOAD utility is a way to write data into database quickly by ignoring the traditional route into the system, like query processing insert/update/delete.LOAD utility will by pass many perf...
DB2 to incorporate a feature equivalent to Oracles Flashback(RIMS)
We have an official request from executive management ((John Mikkelsen) for DB2 to incorporate a feature equivalent to Oracles Flashback. Eric Egdorf DB2 LUW Support Verizon Business 719-535-4289 Verizon recently had an outage that they feel could...
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