October 2012
Intermediate to advanced
316 pages
8h 47m
English
book
IBM Cognos Dynamic Cubes
by Dmitriy Beryoza, Shilpa Bhimavarapu, Alan Blake, David Cushing, Vlaunir Da Silva, Mario Daigle, Avery Hagleitner, Ian Henderson, Beth Jubera, Skyla Loomis, Chris McPherson, Steven Rogers, Carlos Ruiz, Christopher Yao
Content preview from IBM Cognos Dynamic Cubes
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Chapter 8. Optimization and performance tuning 231
Keeping the aggregate cache trace-level logging on for longer than what is required can
negatively affect performance. Because the trace log level will generate a lot of data to the
DQM server log, it should be enabled only for the problem query, and troubleshooting be done
when there is little to no other user activity.
The trace log level for the aggregate cache will dump the intermediate calculations from each
of the subtask threads to the log. This information can be used to determine the source of the
incorrect values.
8.5 Database aggregates
As described earlier in this chapter, database ...
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