Masterclass: Efectos del uso de funciones en el CBO Oracle

Javier Morales is Oracle DBA certified professional since 2002. Writer of the oracle best seller "Optimización SQL en Oracle" (spanish - Amazon) about SQL performance tuning in Oracle, he has worked as DBA and developer menthor for entities like Health Government (Spain - Valencia, Norway), National Police, Presidence Ministry of Spain, Oracle Iberica (Spain and Portugal) and many others. 

Since 2009 he owns the consulting company named TechLevel and provides expert services based on Oracle with a collaborators team with more than 15 years of experience.

He had performed almos zero downtime migrations for the Valencian bloodbank and several hospitals including architecture change (windows to linux, solaris to linux) and different oracle versions.