Oracle Topic Unanswered Threads

Looking for advice on a good Oracle book to cover system administration (as well as setup, design, backup and recovery, exporting, etc) and programming tips (mainly in Java and PL/SQL, although others would be fine as well). I have Oracle Personal Server 8 running with a small test database I created, along with Oracle Forms and Reports 6 with some simple forms and reports accessing it, so I have the tools to play with, I just want some 'direction' with which to improve my skills., , I have some database design experience, as well as Oracle Forms and Reports experience. I also work in Java, so I'm not looking for a beginner's book, Intermediate to Advanced would be best. Any suggestions would be appreciated!