IN_TYPE=<DGN|XFM>: Specifies the type of files to convert.

IN_FILE=<filename-list>: Input files to convert. Not required if using optional OUT_SCHEMA_ONLY=TRUE option

IN_METADB=user/password@service: Specifies an Oracle database connection from where DGN2SDO will obtain Oracle Spatial metadata (e.g., valid target coordinate systems.)