What is DB Link and how it works?
A database link is a schema object in one database that enables you to access objects on another database. In SQL statements, you can refer to a table or view on the other database by appending @dblink to the table or view name. You can query a table or view on the other database with the SELECT statement.
What is the use of Dblink in Oracle?
A database link allows a user or program to access database objects such as tables and views from another database. When accessing a remote table or view over the database link, the Oracle database is acting as an Oracle client.
How do I know if my Dblink is working?
Go to Schema Browser | DB Links tab | highlight the DB Link name you want to test | then click on the “Test Database Link” icon (lightning bolt icon) | and it should give you the test results like below.
How do I find my DB Link password?
First, let’s specify db links with passwordx value of 50 characters. Then, let’s find the encrypted password of this db link. Let’s find the clear text of the detected password. When you run the following procedure, you will see the clear text of the password in “Password: XXXXXXXXX”.
How do I grant Dblink privileges 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 do I know if my Dblink is private or public?
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.
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.