To become certified in Oracle certifications there are two types first, have associate (OCA), Professional (OCP) and Master (OCM) which are three levels relevant for different Oracle products, and on the other hand have a certification expert one specific Oracle product.
For an OCA (Oracle Certified Associate) is essential to make a certification exam (they make parametric centers). But for an OCP (Oracle Certified Professional) then yes you will have to do some course related to the technology in which you want to examine. Testbells course takes place at the Oracle University. As for the Master level, is the best part hard to achieve (it is said that for example only 2 or 3 people certified as Masters).This generally Because if you want certified as OCP (Oracle Professional) application servers, you do not need to make any progress in the Oracle University.
Oracle offers a wide range of certifications currently: in testbells, Oracle Applications, Hyperion, Business Intelligence, etc.. So if you look well surely find the appropriate Oracle Certification that best suits you.
Oracle Certifications are today, the best record that can help the human being for recognition in their workplace. So as to get better career in the IT industry, it can also bring great benefits to employees of a business.
For IT professionals, each Oracle certification level implies a mark of experience and expertise recognized for its value and relevance in the IT industry.
To be honest, at this point I do not remember exactly what I had to study for each certification exam, but if you’re willing to simply OCP certification study guides all these and you’ll be fine.
To test SQL (Oracle Database 11g: SQL Fundamentals I 1Z0-051):
You get your certification as Database 11g Administrator Certified Master
I leave the link so you can view Oracle all the way to conduct examinations for certification
Oracle Database 2 Day DBA
Oracle Database Express Edition 2 Day Developer Guide
For certification OCA (Oracle Database 10g: Administration I 1Z0-042)
Oracle Database Administrator’s Guide (chapters 1 to 20)
Oracle Database Backup and Recovery Basics
For certification OCP (Oracle Database 10g: Administration II 1Z0-043)
Oracle Database Administrator’s Guide (chapters 21 to 28)
Oracle Database Backup and Recovery Advanced User’s Guide
Proper Consideration of certification:
Some people question the value of such certifications, but the truth is that I learned a lot studying for certification exams, and because these certifications are valid worldwide is a good reference point for recruiters seeking talent. Therefore, if you took a course approved by Oracle put some effort and money and go for OCA and OCP certifications, I think they have good value for what they cost.