Programming

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

Inside Oracle APEX Blog
Blog providing tips & tricks for Oracle Application Express (APEX).
http://inside-apex.blogspot.com/

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

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

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

OraNails
Forms, Reports, SQL and ODBC solutions, tips and examples.
http://www.geocities.com/oranails/

Peter Koletzke
Tips page - particularly strong on Developer 2000.
http://ourworld.compuserve.com/homepages/Peter_Koletzke/tip.htm

Running Oracle
Oracle scripts, examples and articles from Spyridon N. Kaparelis.
http://www.runningoracle.com/

Sameer Jejurkar
Papers and tips on WebDB and Designer; good for XML tips.
http://www.geocities.com/shjejurkar/index.html

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

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