Avantages
Oracle pays well and has generally nice facilities, cafeterias, offices, and office services. Pay appears to be fairly high for the bay area. The company is recognizable and in the bay area has a high profile. Working at Oracle means your resume has instant credibility. There are tons of smart people here, the company is fairly aggressive about weeding out poor performers, or the lowest performer even if they perform OK. Working for Oracle, at least on the sales side you are on the short list for most customer opportunities. The Oracle name can get you in the door. Internal support for everything from coffee pots, VPN access, or any other trouble ticket works well.
Inconvénients
Internal information access is awful. People are afraid for their jobs Some of the internal tools are dated. Sales folks tend to be a little arrogant.