How do I create a database link for another user?
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.