Wissem El Khlifi is the first Oracle ACE in Spain and an Oracle Certified Professional DBA with over 12 years of IT experience. He earned his computer science engineering degree from FST Tunisia, his master's degree in computer science and degree in Big Data Analytics & Management from the UPC, Barcelona.
His areas of interest are Oracle HA Database environments, Big Data NoSQL database management, and Big Data analysis. His career included the roles of an Oracle and Java analyst/programmer, Oracle DBA team leader, and Big Data Scientist. He currently works as senior database and application engineer for the American Power Conversion (APC). He writes numerous articles on his website http://www.oracle-class.com, +20 articles publshed on oracle.com (in English, Spanish , Portuguese ). You can follow him on Twitter at @orawiss.