How to debug grails command

Question

When I run dbm-generate-changelog exception is thrown. I would like to debug this script but I can't figure how to do it. I tried to put breakpoint to the script file _DatabaseMigrationCommon.groovy and then in eclipse created new "debug configuraion" command. When I run this none of breakpoints suspend the execution. I also tried with --debug argument.

setup:
Grails: 2.3.3
GGTS: 3.4
Eclipse: 4.3

Answer 1

Do the following:

1. launch grails with the -debug option

   grails -debug run-app
   

2. create Remote Java Application debug configuration in Eclipse and set port to 5005

3. enjoy breakpoints and step-by-step debugging

Answer 2

Try to use dbm-generate-changelog -verbose -stacktrace, it could help you to find cause of fault.