Check your abilities by taking Oracle Technical Ability Placement Paper and Mock Series.The topics that are generally asked here are programming languages and syntax and some basic questions on networking.
Attempt Oracle Quantitative Aptitude Online Placement Tests and get world rankings to know where your level of preparation is in the current stage. Develop a successful test taking strategy and make sure to evaluate each online practice test.
Take this Verbal reasoning Placement Mock Test. Solve a set of challenging, logically and verbally challenging set of questions that are based purely of your brain analysis and thinking abilities asked in Oracle Placement Test.