I\'m researching spring for a possible switch to a spring stack. One of the things that I thought was cool was the ability for spring jdbc to log all the executed sql. So
Try
log4j.category.org.springframework.jdbc.core = TRACE
This helped me, DEBUG just wasn't enough. I am using org.springframework.jdbc-3.0.6.RELEASE.jar with log4j-1.2.15 and slf4j (1.6.4)
DEBUG
For just an SQL (i.e. if you're not interested in bound parameter values) DEBUG should be enough.