| Table Name | Description |
| ALL_DB_LINKS | Database links accessible to the user |
| Column ID | Column name | Data type | Length | Precision | NULL | Description |
| 1 | OWNER | VARCHAR2 | 30 | (null) | N | NULL - oracleabc.com |
| 2 | DB_LINK | VARCHAR2 | 128 | (null) | N | Name of the database link |
| 3 | USERNAME | VARCHAR2 | 30 | (null) | Y | Name of user to log on as |
| 4 | HOST | VARCHAR2 | 2000 | (null) | Y | SQL*Net string for connect |
| 5 | CREATED | DATE | 7 | (null) | N | Creation time of the database link |