Thanks for answering. My problem is this.
The key field of my entities is guid. When I create the mapping in
the "Field mappings" tab -> Create Mapping -> New target..., I create all the columns of my entities except my key field(guid).
I know that Oracle doesn't support Guid types. I want to use the ROW type. Then, I would have to manually create my key field? In this case, is there any converter for GUID type to ROW type?
Thanks again