Useful Links
The 4 dimensions of code instrumentation
A plea for developers to instrument their code
http://www.oracle-base.com/blog/2013/08/16/please-please-please-instrument-your-code
Tom Kyte on code instrumentation
https://web.archive.org/web/20150622040417/http://tkyte.blogspot.co.uk/2005/06/instrumentation.html
Tom comments on the overhead of instrumentation in the Oracle RDBMS
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:10445025326812
Some thoughts on a utopian Oracle development environment
http://www.oracle-base.com/blog/2005/06/30/my-utopian-development-environment
Cary Millsap on reasons to instrument code
http://carymillsap.blogspot.co.uk/2009/02/on-usefulness-of-software.html
Oraclenerd comments on Cary Millsap’s blog post, which leads to a great discussion of the differences between profiling, instrumentation, debugging and logging
http://www.oraclenerd.com/2009/07/logging-debugging-instrumentation-and.html
PL/SQL internal commits are asynchronous
http://asktom.oracle.com/pls/asktom/f?p=100:11:::::P11_QUESTION_ID:1415454871121#20061201507022
Tom Kyte on The Trouble with Triggers
https://blogs.oracle.com/oraclemagazine/the-trouble-with-triggers
Database triggers are evil
http://rwijk.blogspot.co.uk/2007/09/database-triggers-are-evil.html
Triggers considered harmful - Lots of discussion of what is and isn't OK in triggers