How do I create a private database link in Oracle?

How do I create a private database link in Oracle?

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 connect one database to another in Oracle?

Oracle provides a facility called a “database link”. That allows a session(connection) to one database instance to connect to another database instance. (Without this facility, a client would need to create two separate connections, and would need to query the two databases separately.)

How do I grant a database link for a user?

Only database superusers can grant system privileges.

1. CREATE [PUBLIC] DATABASE LINK. The CREATE [PUBLIC] DATABASE LINK privilege allows the specified role to create a database link.
2. DROP PUBLIC DATABASE LINK.
3. EXEMPT ACCESS POLICY.
4. Using the ALTER ROLE Command to Assign System Privileges.

How do I create a database link in another schema?

SQL> CREATE DATABASE LINK ORA11G CONNECT TO tomasz IDENTIFIED BY test1234 USING ‘ORA11G’; Database link created. Solution is following anonyms simple pl/sql block. It will drop all database link in schema TOMASZ. SQL> CONNECT / as sysdba Connected.

How do I get rid of a private DB Link?

A private database link must be in your own schema. To drop a PUBLIC database link, you must have the DROP PUBLIC DATABASE LINK system privilege. You must specify PUBLIC to drop a PUBLIC database link. Specify the name of the database link to be dropped.

How can I see all DB links in Oracle?

2 Answers

1. DBA_DB_LINKS – All DB links defined in the database.
2. ALL_DB_LINKS – All DB links the current user has access to.
3. USER_DB_LINKS – All DB links owned by current user.

How to create a private database link in Oracle?

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. Oracle Net must be installed on both the local

How to create a dB link between two Oracle instances?

Create database link NAME connect to USERNAME identified by PASSWORD using ‘SID’; 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.

What are two types of Oracle create LINK statement?

Oracle CREATE DATABASE LINK statement There are two types of database links: public and private. Private database links are visible to the owners while public database links are visible to all users in the database. For this reason, public database links may pose some potential security risks.

How do I create a public database link?

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.