I noticed that my colleague Gerwin Hendriksen created his personal (Oracle) performance related blog and put it online. Gerwin is doing a lot of research in general performance profiling called that resulted in the method called “GAPP”. One of the strong points of his method is that you are able to crossreference performance on all participating nodes and software stacks.
Have a read how this can also be done while using tooling from the data mining environment: Oracle Data Mining meets performance method “GAPP”.
So in short: Check it out, if your into Oracle performance tuning: