How do I find db links?

Posted on by Emilia Duggan

How do I find db links?

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.

What is db link for?

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 you check db link is active or not?

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 find the DDL of a db link?

Here is a simple script to extract the DB Links DDL with the encripted password. SET LONG 9000 — to print the complete string SELECT DBMS_METADATA. GET_DDL(‘DB_LINK’,a. db_link,a….Share this:

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How do I call a db link?

CREATE OR REPLACE FUNCTION “MC”. “Get_REFTYPES”( param1 IN VARCHAR, param2 IN NUMBER, param3 IN DATE DEFAULT SYSDATE ) RETURN RefType_T PIPELINED IS CURSOR cur_st ( cur_param1 VARCHAR, cur_param2 NUMBER, cur_param3 DATE ) IS select TypeID FROM ……

How do I open a Dblink file?

Procedure for Dropping a Public Database Link

  1. Connect to the local database as a user with the DROP PUBLIC DATABASE LINK privilege. For example, enter: CONNECT SYSTEM@local_db AS SYSDBA.
  2. Query DBA_DB_LINKS to view the public links. For example, enter:
  3. Drop the desired link using the DROP PUBLIC DATABASE LINK statement.

How do you check db link is public or private?

What is a database link?

A database link is a connection between two physical database servers that allows a client to access them as one logical database. This section contains the following topics: What Are Database Links? Why Use Database Links? What Are Database Links?

What is a one-way database link?

A database link connection is one-way in the sense that a client connected to local database A can use a link stored in database A to access information in remote database B, but users connected to database B cannot use the same link to access data in database A.

How do I create a database link in Oracle?

Use the CREATE DATABASE LINK statement to create a database link. A database link is a schema object in one database that enables you to access objects on another database. The other database need not be an Oracle Database system.

What is dBA_dB_links?

DBA_DB_LINKS. DBA_DB_LINKS describes all database links in the database. Its columns (except for PASSWORD) are the same as those in ALL_DB_LINKS.