Charles Kim holds certifications in Oracle, VMware, Red Hat Linux, and Microsoft and has over 24 years of IT experience on mission and business critical systems. Charles is an Oracle ACE Director, an Oracle Certified DBA, and a Certified RAC Expert. Charles specializes in RAC, Linux Systems, and Virtualization and authored three books: 1. Oracle Database 11g New Features for DBA and Developers 2. Linux Recipes for Oracle DBAs 3. Oracle Data Guard 11g Handbook