P6Spy is a framework that enables database data to be seamlessly intercepted and logged with no code changes to existing application. The P6Spy distribution includes P6Log, an application which logs all JDBC transactions for any Java application.

Documentation:
Installation
Configuration
Javadoc

For full documentation refer to format of your choice: html, pdf or epub.

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Related github repos:
p6spy-it - for integration testing with misc application servers
p6spy-perf - for performance testing (using jmeter)