Connect to Remote Database with PL/SQL

To connect to a remote database, you can use the Database Link feature in PL/SQL. Here are the steps to connect to a remote database:

1. Firstly, create a database connection in the local database by using the following statement:

CREATE DATABASE LINK remote_db
CONNECT TO remote_user IDENTIFIED BY password
USING 'remote_db';

In which, remote_db is the connection name of the remote database, remote_user is the username of the remote database, password is the password of the remote database, ‘remote_db’ is the connection string of the remote database.

1. To connect to a remote database and execute SQL statements, you can use the following command:

SELECT * FROM table_name@remote_db;

table_name is the name of the table in the remote database, and remote_db is the database connection created in step 1.

By following the above steps, you can connect to a remote database and execute SQL statements in PL/SQL.