"but it ain't replacing DB2 and Oracle"
I don't undestand this hate for Oracle as a tool. There's a lot to hate about Oracle as a company, but Oracle as a database is something that is far more powerful than most of its competitors, albeit it is so vast it requires a not small effort to learn how to use it effectively, and the size of its documentation is daunting.
There's very little you can't do in SQL or PL/SQL, and often you can solve complex needs without ugly hacks. Sure, if you use it as a simple data dump it's horribly complex - but if you do that, you didn't understand what a RDBMS is - hint - the key is the letter "M".