There are several problems in dbImport from Oracle database.
Running dbImport from maven plugin is not responding. Connect is established and then plugin logs nothing.
Modeler dbImport also has some problems. Case when you haven't got catalogs in database but have schemas: modeler try to load all catalogs and shows that there are nothing to import but tables in schemas exist. So the problem is that modeler try to load only catalogs and that's all. After some changes in code schemas were loaded but when try to load all tables from all schemas bug with the similar behavior to point 1 appeared.
DbImport was passed after code modifications to set schema to import.