ALL_EXTERNAL_LOCATIONS describes the locations (data sources) of the external tables accessible to the current user.
DBA_EXTERNAL_LOCATIONS describes the locations (data sources) of all external tables in the database.
USER_EXTERNAL_LOCATIONS describes the locations (data sources) of the external tables owned by the current user. This view does not display the OWNER column.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| OWNER | VARCHAR2(30) | NOT NULL | Owner of the external table location | 
| TABLE_NAME | VARCHAR2(30) | NOT NULL | Name of the corresponding external table | 
| LOCATION | VARCHAR2(4000) | External table location clause | |
| DIRECTORY_OWNER | CHAR(3) | Owner of the directory containing the external table location | |
| DIRECTORY_NAME | VARCHAR2(30) | Name of the directory containing the external table location |