This is a point for tuning with indexes -> Tuning with indexes is still very common and useful.
While using recommend and evaluate indexes it is possible to investigate each recommended index by updating USE_INDEX column in the table ADVISE_INDEX to Y or N.
It is very interesting to know what each index is good for: reducing I/O or reducing CPU, …
For us it would be very nice, if you could store these data (comparison to the explain without recommend indexes) also in the EXPLAIN-tables e.g. as an extension of ADVISE_INDEX or in a new table.
|Who would benefit from this IDEA?||Anyone involved in index tuning|
How should it work?
While running db2advis or recommend index give us more information why you recommend these index and for what the index is good for (reduce I/O, CPU …). Create a new Explain-table or expand the ADVIS_INDEX table to store the new data.
I have written a java-application to do this but I think, if you investigate in this point, you can give us a lot of more useful information.
|Client Name||Fiducia & GAD IT AG|
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