In this month's GroovyMag I talk about sharing a database between a J2EE application and a Grails application that is using GORM. If you haven't spent anytime working with concurrency in database applications you will really want to check this out. If you have a Container Managed Persistence (CMP) application that you are working with and you have a green-light on using Grails you might consider moving directly from EJB2 to GORM in a phased manner sharing parts of the database on the way.
Thanks again to Craig Wickesser for editing.
Please head over to GroovyMag and check out the article and give me some feedback.
EDIT
I'll also be giving out 5 free PDF copies of GroovyMag to the first five people who can Direct Message me on Twitter the answer to this riddle: What do you call an organized body of related information?
EDIT
That went fast! Congrats to @vintagedance, @evanbooth, @paulk_asert, @iansari, and @unixfudotnet
@unixfudotnet has offered his coupon up to the first person who wants it. Congrats to @dferrand.
Our answer? A database