source: trunk/grails-app/conf/DataSource.groovy @ 45

dataSource {
        pooled = true
        driverClassName = "org.hsqldb.jdbcDriver"
        username = "sa"
        password = ""
}
hibernate {
    cache.use_second_level_cache=true
    cache.use_query_cache=true
    cache.provider_class='com.opensymphony.oscache.hibernate.OSCacheProvider'
}
// environment specific settings
environments {
        development {
                dataSource {
                        dbCreate = "create-drop" // one of 'create', 'create-drop','update'
                        url = "jdbc:hsqldb:mem:devDB"
                }
        }
        test {
                dataSource {
                        dbCreate = "update"
                        url = "jdbc:hsqldb:mem:testDb"
                }
        }
        production {
                dataSource {
                        /*
                         * when releasing a new stable to the live environment
                         * you would probably comment out the dbCreate option
                         * so hibernate won't try to update (which is does not
                         * do so well) and you update the live database yourself
                         *
                         * @see http://grails.org/plugin/autobase
                         * @see http://wiki.github.com/RobertFischer/autobase/example-usage
                         */
                        dbCreate =  "update"
                        username = "gscf"
                        password = "dbnp"

                        // PostgreSQL
                        driverClassName = "org.postgresql.Driver"
                        url = "jdbc:postgresql://localhost:5432/gscf"

                        // MySQL
                        //url = "jdbc:mysql://localhost/gscf"

                        //In memory
                        //driverClassName = "com.mysql.jdbc.Driver"
                        //url = "jdbc:hsqldb:file:prodDb;shutdown=true"
                }
        }
}