Helpful Ruby on Rails tutorials.

Top 30 Ruby on Rails Tutorials from eConsultant

20 ways to Secure your Apache Configuration

Here are 20 things you can do to make your apache configuration more secure.

Oracle DB feature matrix

If you are interested in the features and options of the different editions of the Oracle database(XE,STD,EE) - this document contain a handy matrix.

Ruby on Rails on Oracle XE

As you may have noticed, Oracle recently published an article about Ruby on Rails on Oracle. This articles introduces the Ruby on Rails framework and explains how to use it to access an Oracle database (Oracle Database 10g Express Edition (XE), to be precise).
If you are not familiar with Ruby on Rails, it is important to note that it has nothing to do with Java; it is a Ruby-based framework. Ruby on Rails is really interesting, powerful.
If you have nothing to do :) - check this 3 links:
Ruby on Rails on Oracle: A Simple Tutorial
Grails on Oracle for Java Developers
HR Schema on Rails