Don't believe in gurus , find your own truth.
And this is true , even with DB2.
I don't go to IDUG conferences anymore, because there is no "research" presentations, all of subjects are just an extract of of the manuals. Read them and the redbooks, you will save your money.
I dealt with DB2 performance for some time, for several customers, the technical presentations helped me a lot, but when we dig in, sometimes we need more things in depth, and the presentation contents is not enough specific. Most of the time, contents are copied from one to another ...
So every time i write to the authors, i realised that a lot of them have never tested things that they claim ... if they reply to you.
In preference, guys from DB2 development team always reply, they love technology as you and i , and they love to spread their knowledge to the others.
The professional speakers are to take with care. Lot of them don't spend enough time in "the real world" and just relay something they have heard ...I've had some bad surprise in my career applying updates on blind faith because the presenter said it.
