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Help Center/ Relational Database Service/ Best Practices/ RDS for SQL Server/ Creating a Linked Server for an RDS for SQL Server DB Instance

Creating a Linked Server for an RDS for SQL Server DB Instance

Updated on 2025-01-23 GMT+08:00

Create a linked server for RDS for SQL Server DB instance named 2 to access another RDS for SQL Server DB instance named 1.

  1. Enable distributed transactions of the two DB instances by referring to Distributed Transactions and add the peer-end host information to each other. For on-premises servers or ECSs, see Resolving Names on Remote Servers (ECSs).

    NOTE:

    RDS for SQL Server instance 2 and RDS for SQL Server instance 1 are in the same VPC. If the ECS and RDS instances are not in the same VPC or you are creating an on-premises server for an RDS instance, bind an EIP to the RDS instance. For details, see Binding and Unbinding an EIP.

  2. In DB instance 1, create database dbtest1 as user rdsuser.
  3. In DB instance 2, run the following SQL statements to create a linked server as user rdsuser:

    USE [master]
    GO
    EXEC master.dbo.sp_addlinkedserver @server = N'TEST_SERVERNAME', @srvproduct=N'SQLServer', @provider=N'SQLOLEDB', @datasrc=N'192.168.***.***,1433'
    EXEC master.dbo.sp_addlinkedsrvlogin @rmtsrvname = N'TEST_SERVERNAME', @locallogin = NULL , @useself = N'false', @rmtuser = N'rdsuser', @rmtpassword = N'********'
    GO
    Table 1 Parameter description

    Parameter

    Description

    @server

    The name of the linked server.

    @srvproduct

    The product name of the data source. Use the default value SQL Server.

    @provider

    Use the default value.

    @datasrc

    The IP address and port of the DB instance to be accessed.

    @rmtsrvname

    The name of the linked server.

    @locallogin

    The login name on the local server. Use the default value NULL.

    @useself

    Whether to connect to the linked server by simulating the local login name or username and password. Enter false, which indicates that the linked server is connected through the username and password.

    @rmtuser

    The username (rdsuser).

    @rmtpassword

    The password for the username.

  4. After the DBLink is created, you can view the databases created in DB instance 1 on the linked server.

  5. Run the following commands to check whether the data is successfully inserted, as shown in Figure 1:

    begin tran
    set xact_abort on
    INSERT INTO [LYNTEST].[dbtest1].[dbo].[user1]
    ([id],[lname],[rname])
    VALUES('19','w','x')
    GO
    commit tran  
    Figure 1 Insert result

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