ORA-42642
Error during data validation: Configuration options cannot be NULL.
Cause
Configuration options to DBMS_JSON_DUALITY.INFER_AND_GENERATE_SCHEMA or DBMS_JSON_DUALITY.INFER_SCHEMA are NULL.
Action
Ensure that the valid configuration options are passed to the INFER_AND_GENERATE_SCHEMA and INFER_SCHEMA functions.