Charles Kim is an Oracle ACE Director, VMware vExpert, Oracle Certified DBA, Certified Exadata Specialist, and Certified RAC Expert with over 25 years of Oracle experience on mission- and business-critical databases. He specializes in RAC and virtualization, has authored nine books and holds certifications in Oracle, VMware, Red Hat Linux, and Microsoft. Charles presents regularly at local, regional, national, and international Oracle conferences, is the Technical Editor of Automatic Storage Management by Oracle Press and blogs regularly at http://blog.dbaexpert.com. He is the current President of the Cloud Computing SIG for IOUG. Find him on LinkedIn at http://www.linkedin.com/in/chkim, on Twitter at @racdba, and on the web at http://www.amazon.com/author/ckim.