How do I grant access to Dblink?
You cannot grant a privilege on a db link to someone else. Private db links are owned by a user and only that user can use it. If you want other users to use the same link you need to create the same link under each schema.
What is public Dblink?
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. Specification of the PUBLIC option creates a public database link. If omitted, a private database link is 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.
How do I create a Dblink in Oracle?
Oracle CREATE DATABASE LINK statement In this syntax: 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 public synonym in Oracle?
Oracle CREATE SYNONYM
- First, specify the name of the synonym and its schema.
- Second, specify the object for which you want to create the synonym after the FOR keyword.
- Third, use the OR REPLACE option if you want to re-create the synonym if it already exists.
How does a Dblink work?
A database link connection allows local users to access data on a remote database. For this connection to occur, each database in the distributed system must have a unique global database name in the network domain. The global database name uniquely identifies a database server in a distributed system.
How do I create a Dblink?
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.
What is use of Dblink in Oracle?
A database link is a pointer that defines a one-way communication path from an Oracle Database server to another database server. The link pointer is actually defined as an entry in a data dictionary table. To access the link, you must be connected to the local database that contains the data dictionary entry.
How do I know if my Dblink is working?
You could use WITH FUNCTION and do simple check: WITH FUNCTION check_dblink(p_dblink IN VARCHAR2) RETURN VARCHAR2 IS r INT; BEGIN EXECUTE IMMEDIATE ‘SELECT 1 FROM dual@”‘ || p_dblink || ‘”‘ INTO r; RETURN ‘OK’; EXCEPTION WITH OTHERS THEN RETURN SQLERRM; END; SELECT check_dblink(db_link), udl.
How do I find the Dblink in Oracle?
Also, USER_DB_LINKS will display the db links created by the current user, so that won’t list all the DB links that the user has access to. You can use ALL_DB_LINKS to get the links that the user has access to.
How do I grant Dblink privileges in Oracle?
Can we create synonym for Dblink in Oracle?
db_link synonyms are not allowed. Your only solution is to have the code instead reference the tables by synonyms, and set private synonyms to point across the correct db_link.