This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Any time there is a duplicate definition in the struts-config.xml file, the second definition is the one that will be used.
Note: Support for the Struts DataSource utility has been removed from the latest version of Struts (1.3.5). If you want your application to be upgradeable to the latest version, you may want to consider defining the DataSource as a JNDI resource in your application server instead of with the Struts utility.