It is the best database if you are a bank, military or very large company who is already using it. Even in large government departments where I do contract work no one, absolutely no one, ever says "Why don't we use an Oracle database for our new application". If you are a large company and pay enough in licensing fees you can get great support and it plays well with other Oracle acquisitions like PeopleSoft. Some of the support tooling is a nightmare to patch (looking at you OEM!).