Sometimes after upgrading the version of Intelli-J that I'm using for development, when I try to run the command-line `grails` program, I receive the following error message: Error occurred runni...

A convenient method of configuring parameters in a Grails app *application.yml* file is to use system environment variables instead of hard-coding values. The syntax for an environment variable is: ...

Gradle provides the ability to customize the name of the WAR file that is generated from the Grails war command. Grails uses the war gradle plugin, which specifies the following pattern to create the...

By default, the grails `run-app` command, as well as running a Grails WAR from the terminal or as a Windows service, creates an instance of Tomcat on port 8080. To change this, edit the */grails-app/c...

By default, when a GORM `.save()` function call fails, it fails silently. If you want it to always throw an error, add this to your /grails-app/conf/application.yml file at the bottom. --- ...

It used to be that when using the Spring Security Plugin with Grails, you needed to include in your build.gradle file a separate plugin for handling CORS requests. In more recent versions of Grails, t...

When your application gets to be a certain size, you'll have to enter the world of Java Garbage Collection, and analyzing memory usage to better determine needs and improve performance. Part of that ...

If you've obtained a JAR file that is not available in an existing Maven repository, you can add it to your local Maven repository with the following command. Make sure that all of your options are su...

Grails domain classes using GORM offer the dynamic finders `Class.findByXXX()` and `Class.findAllByXXX(max: 123)`, which will retrieve 1 record and 123 records, respectively. On SQL Server 2012 or h...

It's often useful when debugging a Grails application to be able to see the exact SQL that is being executed in the database. If you're using GORM, you can modify your /grails-app/conf/application.y...