I wrote another recension at amazon:
Oracle Database Programming using Java and Web Services from Kuassi Mensah.
Take a look here.
Here a short sum-up:
This book covers everything around Java and Oracle Database. Kuassi Mensah explains in details how to run Java inside the database (with all restrictions) and why you have to use a native Java compiler and how to write Java outside the database which leverages all the Oracle infrastructure (TAF, ONS, etc.) and how to to run Non-Java languages inside the OracleJVM and, and, and....
Just one thing more: Buy it - read it.