La distribucion Linux de Oracle con bastantes medidas de seguridad, es gratis 
https://linux.oracle.com/pls/apex/f?p=101
Installing Oracle Database XE on Debian
There is now an apt-get repository up on oss.oracle.com for XE. Just add:
deb http://oss.oracle.com/debian unstable main non-free
to /etc/apt/sources.list and then:
# wget http://oss.oracle.com/el4/RPM-GPG-KEY-oracle -O- | sudo apt-key add -
# apt-get update
# apt-get install oracle-xe
‘libaio’ and ‘bc’ are in the repository, so dependancies will pull them in if the user doesn’t have them. (Note: You will need to ’sudo’ or have ‘root’ privileges to install XE.)
enjoy it!
