Oracle Database Utilities for 18.1 has been updated with the following restrictions:

• For the ACCESS_METHOD parameter for Data Pump Export (Chapter 2):

  "The ACCESS_METHOD parameter for Data Pump Export is not valid for transportable tablespace jobs."

• For the TRANSPORT_TABLESPACES parameter for Data Pump Export (Chapter 3):

  "Transportable tablespace jobs do not support the ACCESS_METHOD parameter for Data Pump Export."

• For the ACCESS_METHOD parameter for Data Pump Import (Chapter 2):

  "The ACCESS_METHOD parameter for Data Pump Import is not valid for transportable tablespace jobs."

• For the TRANSPORT_TABLESPACES parameter for Data Pump Import (Chapter 3):

  "Transportable tablespace jobs do not support the ACCESS_METHOD parameter for Data Pump Import."