Im trying to get NHibernate to work with Oracle 11g´s XmlType. The following Exception is thrown: Dialect does not support DbType.Xml My configuration looks like: <?xml version="1.0" encoding="utf-8" ?> <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2"> <session-factory> <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property> <property name="dialect">NHibernate.Dialect.Oracle10gDialect</property> <property name="connection.driver_class">NHibernate.Driver.OracleClientDriver</property> <property name="connection.connection_string">...</property> <property name="show_sql">false</property> </session-factory> </hibernate-configuration> Sure, the XmlType functionality was introduced in 11g but I dont know the configuration Mapping. Anyone here using this feature and willing to show its config? Thanks.