我在Grails 2.0和Postgresql 9.1上遇到麻烦

我正在尝试使用顺序ID映射现有数据库。但是，即使没有在域中创建任何类，我也会遇到错误：

Compiling 1 source files.....
| Running Grails application
| Error  executing bootstraps:
      Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; 
      nested exception is org.springframework.beans.factory.BeanCreationException:
      Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory';
      (...)
      Invocation of init method failed; nested exception is org.hibernate.HibernateException:
           Missing sequence or table: hibernate_sequence

我的数据源是：

dataSource {
    pooled = true
    driverClassName = "org.postgresql.Driver"
    username = "postgres"
    password = "postgrespass"
    dialect = org.hibernate.dialect.PostgreSQLDialect
    logSql = true
}
hibernate {
    cache.use_second_level_cache = true
    cache.use_query_cache = true
    cache.region.factory_class = 'net.sf.ehcache.hibernate.EhCacheRegionFactory'
}
// environment specific settings
environments {
    development {
        dataSource {
            dbCreate = "" 
            url = "jdbc:postgresql://localhost:5432/Rambo"
        }
    }
}

Tee现有数据库是一个扑克软件数据库（Holdem经理）。我正在使用一个不使用序列的PlayerHand对象，但是Player对象具有一个序列表。

奇怪的是，在以前的程序中，我很容易使Player对象与Postgresql 8.3＆Grails 2.0一起使用。