Humility and a decided lack of ego. It is one thing to be confident with your skills, however, most of the best Oracle people I know are also the most humble. Case in point is Mike Ault. I have known of his work, books and appreciation for all things Oracle for many years. I met him in person about two years ago at RMOUG training days in Denver and again at IOUG Collagorate 09 in Orlando. Instead of regaling me with Oracle knowledge, we talked of diving, kids and tiramisu. Why is this so important? Because while you can learn sitting at the feet of a guru, you can also learn something new from even the lowest, newest and greenest of people if you are open to it. I have also known engineers who believe the world should revolve around them, and you know what? They are usually constantly involved in a perceived crisis that someone, anyone, else caused.
Humility will gain you the world. There are a few Oracle bigwigs out there that set up shop at a conference and look more like PT Barnum than a credible source all in the name of hawking their books, services or advice. (Those that know me know of whom I speak!) Getting a perspective from others with different talents than you and lesser as well as greater talents than you. Listen to your colleagues and don’t rush to judgment on ideas just because they are from a newbie, you never know where that spark will come from that will solve a problem now in the future.