Ever since I started working with Oracle, I had an interest in Oracle database performance tuning. This led, eventually, to a four day training I made and gave for customers of Transfer Solutions. Since 2012 I work for Rabobank Nederland.
A few years ago I also became interested in Oracle database security. All technology aside, it is my experience that security usually plays out on a political level.
I'm a Oracle certified professional for the 8i, 9i, 10g and 11g databases and Oracle Database 11g Performance Tuning Certified Expert.