Oradev
- Articles, scripts, links, and book lists.
- http://www.oradev.com/

OraBlogs
- Aggregated Weblogs for the Oracle development community.
- http://www.orablogs.com/

SingleQuery.com
- Weblog covering the nuances of advanced Oracle query and database development. Authored by Greg Pike, Jeremy Simmons and others.
- http://www.singlequery.com/

Tim McLellan
- An introduction to Data Modeling.
- http://www.islandnet.com/~tmc/html/articles/datamodl.htm

Tech on the Net - Oracle
- Basic code examples for SQL and PL/SQL. Select statements, variables, functions, triggers.
- http://www.techonthenet.com/oracle/

Oracle-Base
- Scripts, articles, example code, utilities and a user forum. Covers Oracle 8i, 9i and 10G.
- http://www.oracle-base.com/

ADP - Analyse, Design & Programming
- Help with Oracle installation, SQL, PL/SQL and Oracle Trace.
- http://www.adp-gmbh.ch/ora/

Oracle Magazine
- Code Archive.
- http://www.oracle.com/oramag/code/