Oracle in a Nutshell

Name

CREATE/DROP DATABASE LINK

Synopsis

CREATE Syntax:

CREATE [SHARED] [PUBLIC] DATABASE LINK dblink
[CONNECT TO 
  {CURRENT USER 
  |  username IDENTIFIED BY password
    [AUTHENTICATED BY username IDENTIFIED BY password]
  }]
[USING 'connectstring']

DROP Syntax:

DROP [PUBLIC] DATABASE LINK dblink

Creates or removes a database link, which allows access to objects on a remote database.

Keywords

dblink

Specifies the name of the database link being created. Must be a valid Oracle object name.

SHARED

Specifies that a single network connection be shared across users when the Multi-Threaded Server/Shared Server is configured.

PUBLIC

Specifies that the database link be available to all users. If omitted, the database link is private and available only to you.

CONNECT TO CURRENT USER

Specifies that a current user database link be created, which requires a global user with a valid account on the remote database.

CONNECT TO username IDENTIFIED BY password

Specifies the username and password used to connect to the remote database.

AUTHENTICATED BY

Specifies a username and password on the remote database to be used for authentication when the SHARED keyword is used.

USING

Specifies the Oracle Net Services database specification (connectstring) for the remote database.

Tip

If the CONNECT TO clause is omitted, the account username and password currently logged in, not the username and password of the creator, will be used when the database link is invoked.