Karl Arao is an OCP-DBA, RHCE, and Oracle ACE. He works for Enkitec as a Senior Technical Consultant where he currently spends most of his time exploring on Exadata capacity planning and performance. Prior to that, Karl went to work for SQL*Wizard as a Solutions Architect and an R&D guy where he had his five years of solid DBA experience including proactive database maintenance, database installation and configuration for high availability and disaster recovery, migration and upgrades, backup and recovery, database hardening, capacity planning, and performance tuning. He shares his experiences, adventures, and discoveries in his blog (karlarao.wordpress.com), he tweets at @karlarao, and owns a Wiki site (karlarao.tiddlyspot.com) where he shares his quick guides and documentations on technologies. He presents at local Oracle Events and DBA round tables, and has also presented at the Oracle OpenWorld Unconference, Oracle Closed World, Virtathon, Hotsos, and RMOUG. In his spare time, he loves to mine the ASH and AWR and do adventure sports like underwater hockey, mountaineering, mountain biking, aquathlon, and sprint distance triathlon.