I am trying to use an Oracle database to a Grails project. I work with the command line tool. 

So far:

* I have put the ojdb6 into a lib directory I had to create myself, at the root of my application
* I modified application.yml as follow:

```
dataSource:
    pooled: true
    jmxExport: true
    driverClassName: oracle.jdbc.OracleDriver
    username: usrname
    password: pwd

environments:
    development:
        dataSource:
            dbCreate: create-drop
            url: jdbc:oracle:thin:@//url:port/db
    test:
        dataSource:
            dbCreate: update
            url: jdbc:oracle:thin:@//url:port/db
    production:
        dataSource:
            dbCreate: update
            url: jdbc:oracle:thin:@//url:port/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

```
* I also created a domain-class with an Integer attribute, just to give it a try.

However, it doesn't seem to work. I get a huge error message that doesn't even fit in my command window. When I use --stacktrace, the first message is "Failed to start server".

I've been trying to solve this problem for three days, any idea/comment will be welcome. Thank you kindly.

Side note: everythink works perfectly when I use the default database, not changing anything in the configuration.