How do I create a database link for another user?

Before proceeding any further, you have to make sure the users involving in the database link have been granted proper system privileges:

Grant CREATE DATABASE LINK or CREATE PUBLIC DATABASE LINK to the user in local database, whichever privilege is to be used.
Grant CREATE SESSION to the user in remote database.

How do I create a database link for another user in Oracle?

Oracle CREATE DATABASE LINK statement

First, specify the name of the database link after the CREATE DATABASE LINK keywords.
Second, provide user and password of the remote database after the CONNECT TO and IDENTIFIED BY keywords.
Finally, specify the service name of the remote database.

How do I create a private database link?

To create a private database link, you must have the CREATE DATABASE LINK system privilege. To create a public database link, you must have the CREATE PUBLIC DATABASE LINK system privilege. Also, you must have the CREATE SESSION system privilege on the remote Oracle database.

How do I create a database link in SQL Server?

Use SQL Server Management Studio

In SQL Server Management Studio, open Object Explorer, expand Server Objects, right-click Linked Servers, and then select New Linked Server.
On the General page, in the Linked server box, type the name of the instance of SQL Server that you area linking to.

How do I know if my DB link is public or private?

We can verify public database link using select * from dual@public_db_link; How private db links can be verified by a DBA if application schema’s password is not known.

How do I create a database link from Oracle to SQL Server?

Making a Connection from Oracle to SQL Server

Define a Data Source Name (DSN) for SQL Server.
Create a Heterogeneous Services Initialization File.
Alter your listener.
Alter your tnsnames.
Start the new Listener.
Validate the connection to your DSN.
Create a Database Link within Your Oracle Database.
Select some data.

What is private DB Link?

Database links can be public or private. A public database link is one that can be used by any user. A private database link can be used only by the database link’s owner.

How do I create a database link in SQL Developer?

Creation of DB Link CREATE DATABASE LINK dblinkname CONNECT TO $usename IDENTIFIED BY $password USING ‘$sid’; (Note: sid is being passed between single quotes above. ) Create database link NAME connect to USERNAME identified by PASSWORD using ‘SID’;

How do I find my DB Link?

Any user can query USER_DB_LINKS to determine which database links are available to that user. Only those with additional privileges can use the ALL_DB_LINKS or DBA_DB_LINKS view.

How do I grant a database link privilege in Oracle?

To create a public database link, you must have the CREATE PUBLIC DATABASE LINK system privilege. Also, you must have the CREATE SESSION system privilege on the remote Oracle database. [oracle@orcl Desktop]$ sqlplus system/oracle SQL> create user abc identified by abc; User created.

How to create a current user database link?

Specify CURRENT_USER to create a current user database link. The current user must be a global user with a valid account on the remote database. If the database link is used directly rather than from within a stored object, then the current user is the same as the connected user.

Can you create a database link in another schema?

You cannot create a database link in another user’s schema, and you cannot qualify dblink with the name of a schema.

How to create a database link in Oracle Net?

Oracle Net must be installed on both the local and remote Oracle databases. Specify SHARED to use a single network connection to create a public database link that can be shared among multiple users. If you specify SHARED, you must also specify the dblink_authentication clause. Specify PUBLIC to create a public database link available to all users.

Can a database link be used in another database?

The other database need not be an Oracle Database system. However, to access non-Oracle systems you must use Oracle Heterogeneous Services. After you have created a database link, you can use it in SQL statements to refer to tables, views, and PL/SQL objects in the other database by appending @dblink to the table, view, or PL/SQL object name.