Please advise which database should choose for developer and dba profile
What do you mean by "developer and dba profile"?
There are a lot of factors to consider when choosing a database. One does not simply choose without some details about how it's going to be used.
good money in being an Oracle DBA... Or better yet and Oracle consultant :)
Depends on your skill level and experience, though. Oracle is mostly used by large enterprise users, which means large companies. You're not likely to get a good job with one of them without an impressive resume, or an even more impressive demonstration of skill.
MySQL is more of a low-to-middle sized platform, used more by small companies. Those you'd probably have a better chance of getting a job with, even without the impressive resume and/or demonstration.
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