I am inserting some data into the database but some objects aren't inserting even though I can't see any validation errors. What is the best way to error with stacktrace or with sql so i can figure out what is wrong?

for example I do , new XXXXX(property: "blah").save(flush:true)

I don't see errors on startup (grails run-app) but i also don't see my data. I do see the data for many of my objects so i'm sure it's something about my objects, validation or even associations but I need a simple way to see the issue in the log/console...

i'm sure this is easy, but tia...