Grails Datasource reconnection properties

//Reconnection Properties
        dataSource {
            properties {
                maxActive = 30
                minIdle = 1
                numTestsPerEvictionRun = 3
                testOnBorrow = true
                testWhileIdle = true
                testOnReturn = true
                validationQuery = "SELECT 1"
                minEvictableIdleTimeMillis = (1000 * 60 * 5)
                timeBetweenEvictionRunsMillis = (1000 * 60 * 5)
            }
        }