Ankush is really good trainer in Oracle DBA. He clears all the of doubts asked during the session or after it which makes learning easier for who are new to Oracle. As he has lots of experience in training as well as working the training sessions are clear and concise. There is no time-limit and specific duration for his Oracle DBA batches, which is essential for new-comers to learn and adapt to Oracle Environment. I definitely recommend to opt for his training if you are interested in pursuing career as Oracle DBA.