Each of the tuning advisors in IBM Data Studio, IBM InfoSphere Optim Query Tuner, and IBM InfoSphere Optim Query Workload Tuner has at least one option that you can set to influence the recommendations that they generate. Some of the advisors have exactly one option, but the advisors that help with statistics and indexes have many more than that. In this blog, I'd like to explain some of these options from time to time because a number of them look complicated, are not documented well, or both.
The options appear in two places. In one... [More]