Performance Tuning documents , Tools , Scripts ,videos
Hi,
I am really looking forward to learn about Performance Tuning.
So far i have learnt that there are two kinds of tuning , 1. Database Tuning and 2. Query Tuning.
can any one elaborate both of them , how to start learning performance Tuning and which one of both should be learnt 1st.
Please suggest any Documents ( like Blogs / Videos / Useful links /) or any interesting Tools and their use or any scripts .
Thanks in advance.