The instructions you need to prepare can be obtained from www.database-brothers.com/db2mag/GettingReady-IBMDB2LUW-Performance-Diagnosis-Lab.pdf This PDF contains commands that you should run to prepare to analyze your database. I suggest you choose a database that you would like to have perform better - better meaning having greater efficiency and throughput, and possibly supporting more users on the same hardware.
I'll be back to blog again in a couple days. We'll begin by covering some key performance metrics that will help you understand the nature, health, and efficiency of your database.
President & CEO, DBI ( www.DBIsoftware.com )
IBM DB2 GOLD Consultant