Oracle is not just the DB though, they have a lot of applications across several industries, such as utilities, health care, etc. And, there is also Oracle E-Bu

Oracle is not just the DB though, they have a lot of applications across several industries, such as utilities, health care, etc. And, there is also Oracle E-Business suite, which is a big competitor to SAP in the financial management system space. So, they have other sources of revenue as well, and can likely build a large revenue stream of subscription services for business applications. (i.e. running PeopleSoft, EBS, etc. in the cloud).