Vantaggi
Oracle is a great place to work in many ways, there are many interesting opportunities, loads of variety, so many great people and lots and lots of flexibility. In sales, you have to be prepared to develop your network, identify your own career ambitions and make things happen, although there are plenty of people and tools to help you if you are self motivated to do that. It can be hard when you first join to "find your place" - the scale of the company and the number of people who work predominantly from home and who are not around much face to face, can make it hard to settle in. But if you value flexibility and being trusted to get the job done in the way you think best, then Oracle could be a good option for you.
Svantaggi
For me there are two main downsides - first, a lack of annual pay rises (you must negotiate a good salary to start with as that is your strongest bargaining position and you may go several years without a pay rise once you are in) and secondly the challenges presented by the transition from being an on premise to a cloud company which is definitely proving quite tough in some areas. There are numerous inefficient processes, some product challenges and many cultural changes to be made. At the end of the day, Oracle is like an oil tanker, you know it can change course, but it may take longer than you want and be a bit of a bumpy ride while you are doing it.