Gayatri, Mr. Sharma gave you a perfect example based on "Insurance" concept. I don't know what exactly you think but remeber that a Senior educated Oracle DBA is a professional person not a not a minimum wage labour in McDonald that you expect he does muscle works 8 hours like a servant that you may call it accountable !!!
Yes may be for weeks he just monitor the database and coach developers for few hours a day and then he reads magazinewhat's wrong with that? Yes you have to pay him big bucks every bi-weekly and you may be need him once in a year but if you don't have it at crisis moments you basically screw up for good. He also involves on company decision making, data modeling, hardware purchasing and etc. This are not low level tasks and it's perfectly accountable. A CEO can make 1 million US a year. Do you like to blame him as well!!! Blame other people is the easiest thing in the world.