V$DBLINK

V$DBLINK describes all database links (links with IN_TRANSACTION = YES) opened by the session issuing the query on V$DBLINK. These database links must be committed or rolled back before being closed.

Column	Datatype	Description
`DB_LINK`	`VARCHAR2(128)`	Name of the database link
`OWNER_ID`	`NUMBER`	Owner of the database link UID
`LOGGED_ON`	`VARCHAR2(3)`	Whether the database link is currently logged on
`HETEROGENEOUS`	`VARCHAR2(3)`	Whether the database link is heterogeneous
`PROTOCOL`	`VARCHAR2(6)`	Communication protocol for the database link
`OPEN_CURSORS`	`NUMBER`	Whether there are open cursors for the database link
`IN_TRANSACTION`	`VARCHAR2(3)`	Whether the database link is currently in a transaction
`UPDATE_SENT`	`VARCHAR2(3)`	Whether there has been an update on the database link
`COMMIT_POINT_STRENGTH`	`NUMBER`	Commit point strength of the transactions on the database link