ORA-23368: name string cannot be null or the empty string

ORA-23368: name string cannot be null or the empty string

Cause: Argument sname1, sname2, oname1, oname2, missing_rows_ sname, missing_rows_oname1, missing_rows_oname2 to differences() or rectify() cannot be NULL or (empty string).

Action: Change argument to non-null or non-empty string.