Over the years, I have found some useful developerWorks articles that I refer back to once in a while so I thought I would share them with you as an FYI and to help you build your own reference library.
Listed in chronological order of publishing:
Monitoring in DB2 9.7, Part 1: Emulating data reset with the new DB2 9.7 monitoring table funcions
Monitoring in DB2 9.7, Part 2: Relational access to XML event monitor data in DB2 9.7
Restricting database connections using the CONNECT_PROC database configuration parameter in DB2 for Linux, Unix, and Windows
DB2 monitoring: Tracing SQL statements by using an activity event monitor
DB2 monitoring: Migrate from snapshot monitor interfaces to in-memory metrics monitor interfaces
DB2 monitoring enhancements for BLU Acceleration
And don't forget that all the DB2 for LUW best practices are listed here !