Biju Thomas is Oracle ACE Director, Oracle Certified Professional, and Certified Oracle Database SQL Expert. He is Principal Solutions Architect at OneNeck IT Solutions. Biju has been developing and administering Oracle Databases since 1993 and Oracle EBS since 2006. He spends time mentoring DBAs, performance tuning, and architecting Oracle solutions. He is a frequent presenter at Oracle conferences and writes articles for Oracle technical journals. He has authored Oracle certification books published by Sybex since Oracle8i, including Oracle Database 12c OCA. Biju blogs at www.bijoos.com/oraclenotes and you can follow him on Twitter (@biju_thomas) or Facebook (www.facebook.com/oraclenotes) for daily Oracle tidbits (#oratidbit).