How do I configure PostgreSQL with Grails 3.0?

I am using IntelliJ IDEA 15.0.2 as an IDE. I have created a Grails 3.0 application and changed it a bit to configure PostgreSQL.

Here is my dataSource:

dataSource:
pooled: true
jmxExport: true
driverClassName: org.postgresql.Driver
username: postgres
password: root

environments:
development:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/trace_db
test:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/trace_db
production:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/trace_db
        properties:
            jmxEnabled: true
            initialSize: 5
            maxActive: 50
            minIdle: 5
            maxIdle: 25
            maxWait: 10000
            maxAge: 600000
            timeBetweenEvictionRunsMillis: 5000
            minEvictableIdleTimeMillis: 60000
            validationQuery: SELECT 1
            validationQueryTimeout: 3
            validationInterval: 15000
            testOnBorrow: true
            testWhileIdle: true
            testOnReturn: false
            jdbcInterceptors: ConnectionState
            defaultTransactionIsolation: 2 # TRANSACTION_READ_COMMITTED

And in my build.gradle I added runtime "postgresql:postgresql:9.4-1207.jdbc4".

But that gives errors when I run:

ERROR org.apache.tomcat.jdbc.pool.ConnectionPool - Unable to create initial connections of pool.
java.sql.SQLException: org.postgresql.Driver

What have I missed?

Answer

Data source

dataSource {
    pooled = true
    jmxExport = true
    driverClassName = "org.postgresql.Driver"
    username = "postgres"
    password = "xxx"

Build Config

dependencies {
        // specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
        // runtime 'mysql:mysql-connector-java:5.1.29'
        // runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
        runtime "org.postgresql:postgresql:9.4.1208.jre7"
        test "org.grails:grails-datastore-test-support:1.0.2-grails-2.4"
    }

Change the jre number according to your db numbe psql version. Hope i helped. Cheers!