Edit Database Link General

Service Name
Specify the service name of a remote database.

User Name
The user name used to connect to the remote database using a fixed user database link.

Password
The password for connecting to the remote database.

Current user
With this option checked, a current user database link is created. The current user must be a global user with a valid account on the remote database.

Shared

Fill in Authentication username and Authentication password when Shared option is enabled.