1: According to the employment situation in Beijing, if you are a junior DBA with less than one year's work experience, but you have a solid theoretical grasp and a solid foundation, although you don't have much practical experience, the starting salary is usually 3,500-5,000 yuan a month according to different industries, and will increase with age. The highest salary around me is about 5000 a day.
2. I don't know much about OCP training in Wuhan, but if you want to train, I suggest you come to a city like Beijing, because there are many training institutions and many of them are mature, because I already know that too many people spend money on garbage training institutions.
Through your question, I feel that you have not entered the DBA industry, but a layman who wants to learn. There are too many principles in the database, so self-study is not recommended, because there will be many detours. I suggest you come to Beijing to find a reliable training and study for about a year. As long as you have the opportunity to enter the enterprise and really operate the database, you will gradually accumulate experience. Your annual salary will be doubled according to your experience. I didn't pay attention to wages at first. Experience is the most important thing. For example, my salary is not very high, but my company experience made me stay. When others are still playing with dozens and hundreds of gigabytes of databases, at least we are all on T data. If you jump again in the future, your qualifications will be different, just like two people who interviewed, one worked in Baidu and the other just worked in a small company. As a boss, which one will you consider first? In the same way, previous experience is the capital of future money.
4.DBA work is generally divided into two directions, namely, developing DBA and managing DBA. If you want to be a DBA in the management direction in the future, you should know something about the operating system, not too deeply, but try to understand it, because after all, the database is just a software, and it depends on the operating system. Now the commonly used operating systems on the market are linux, unix, aix, and a small amount of windows server. The depth of understanding of the operating system is also the standard to determine your future high salary.
I can only say so much now. I hope the above answers are helpful to you. I wish you an early entry into the DBA circle.