Oracle pulls in a LOT of money and has for some time. A portion of that profit, especially years ago, was funneled into employee salaries, perks, benefits, bonuses, etc. and made it a lucrative place to work. It was a shrewd move by executives -- get the best possible talent by being incredibly attractive and selective. It wasn't that the company really cared about its employees or customers, it was simply self-interest. And it was a reflection of the person at the very center of the organization (LE) whose only goal was to grow his own power and wealth. One very interesting element to this is to look at charitable giving as a measure of a person's concern for things/people other than him/herself. LE has regularly been on the "scrooge" list. Once he received enough flak about it, he started giving in self-serving ways (e.g. to a medical foundation to research aging in the attempt that he may find a way to prolong his own life) to try to claim that he was giving charitably.
Now that Oracle is having a hard time due to missing the signs of how Cloud would change the competitive landscape, the funds are drying up and the values/character of those at the top are becoming more visible and impactful. Whether it is refusing to pay commissions that were earned, leveraging age/gender discrimination to push people out or being unethical with accounting for "Cloud" earnings, it all revolves around the self-interest of the executive staff and how that has created a culture that has permeated the corporation. If you choose to stay and try to ride out the chaotic changes, clearly understand that the company and leadership are very, very self-focused.
If you are leaving Oracle, either involuntarily or choosing to pursue another job, be mindful of where you are going and whether it may also have a toxic culture. For example, what is Amazon like? How does JB match up to LE? (https://www.wired.com/story/how-amazon-jeff-bezos-spends-his-money/) Or how does this compare with Oracle's culture? (http://fortune.com/2015/08/17/amazon-employees-work-culture/) Were you aware that Amazon demands a non-compete agreement and will try to enforce it even if it only amounts to harassment of a departed employee? (http://blogs.findlaw.com/free_enterprise/2017/06/amazon-testing-the-limits-of-non-compete-clauses.html)
I fully understand that everyone needs to support themselves (and, potentially, a family too), so working somewhere is necessary and that being at a successful corporation is much better than at one that is flailing. I'm not advocating staying at Oracle or avoiding Amazon. My point is to just keep your eyes open wide, know what you are looking to get out of work, build your skills, go after your own personal career path and always be ready to market yourself when a company isn't a fit for you any longer.