I went over to the Blackhat site and found the link to his paper and also checked what else is there. The only other Oracle paper I could see is Estebans; more on that in a minute.
Sid's paper is titled "Hacking Oracle from the web: Exploiting SQL Injection from web applications". This is a nice summary paper of SQL Injection against Oracle covering data extraction, privilege escalation and OS Code execution and a little on PL/SQL Injection.
Estebans paper is called "Hacking and protecting Oracle database vault" and is a really nice summary of some of the ways to exploit DV and of course to protect against those issues. Some are well known such as unlinking, os bypass and some less known such as masqurading as MACSYS. As usual from Esteban its a good paper. The slides from his talk are also available as are the scripts he made available.