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Migrating Data to RDS for SQL Server Using SQL Server Management Studio

Preparing for Data Migration

You can access RDS DB instances through an EIP or ECS.

1. Prepare an ECS for accessing DB instances in the same VPC or prepare a device for accessing RDS through an EIP.
   • To connect to a DB instance through an ECS, you must first create an ECS.

     For details about how to create and connect to an ECS, see section How Can I Create and Connect to an ECS?

   • To connect to a DB instance through an EIP, you must:
     1. Bind the EIP to the DB instance. For details, see Binding an EIP.
     2. Ensure that the local device can access the EIP that has been bound to the DB instance.
2. Install the Microsoft SQL Server client on the ECS or the device.

   For details, see How Can I Install SQL Server Management Studio?

   

   The SQL Server Management Studio version must be equal to or later than the Microsoft SQL Server DB engine version.

Exporting Data

Before migrating an existing Microsoft SQL Server database to RDS, you need to export the Microsoft SQL Server database.

• The export tool must match the DB engine version.
• Database migration is performed offline. Before the migration, you must stop any applications using the source database.

1. Log in to the ECS or device that can access RDS.
2. Use SQL Server Management Studio to generate database object scripts such as tables and views.
   1. Use SQL Server Management Studio to connect to the Microsoft SQL Server database.
   2. On Object Explorer, expand Databases, right-click the database to be exported, and choose Tasks > Generate Scripts. The Generate and Publish Scripts window is displayed.
   3. Choose Choose Objects in the navigation pane on the left, select database objects to be exported, and click Next.
   4. Choose Set Scripting Options in the navigation pane on the left, click Save script to a specific location, and select a path for storing exported files from the File name drop-down list, and click Next.
      

      • If you select Single file, all objects will be stored in the same file.
      • If you select Single file per object, each object will be stored in its own file.
   5. Click Next.
   6. Click Finish.
   7. Use SQL Server Management Studio to open the exported SQL file or SQL files.
   8. Change USE [DATABASE] in the first line to USE [RDS database name] and save the change.
   

   For details on generating scripts, see Generate and Publish Scripts Wizard.

3. Use bcp to export data from the source database to a .txt file.

   Download and install the bcp first. The command for exporting data is as follows:

   >bcp dbname.schema_name.table_name out C:\test\table_name.txt -n -S localhost -U username -b 2000

   • out indicates the directory from which the data is imported.
   • -n indicates that the native (database) data types are used for performing bulk-copy operations.
   • -S indicates the address to be used by the bcp tool to connect to the Microsoft SQL Server DB instance.
   • -U indicates the database username.
   • -b indicates the lines of data imported in a batch.

   Enter the database password when prompted.

   Example:

   C:\test>bcp test.dbo.t1 out c:\test\t1.txt -n -S localhost -U rdsuser -b 2000
   Enter password:

   After this command is executed, a t1.txt file will be generated as follows:

   C:\test>$ dir t1.txt
   2017/03/27  11:51         22 t1.txt

   Repeat the preceding steps to export data from the other tables in the database.

Importing Data

This section describes how to use an ECS or a device that can access RDS to connect to a DB instance and import the exported SQL file into RDS.

If the source database contains the full-text index, you need to create one on RDS.

1. Import data through tools.

   Method 1: Use sqlcmd to import database objects.

   The Microsoft SQL Server database or client provides sqlcmd.

   >sqlcmd -S "server" -d database -U login_id -i inputfile

   • -S indicates the IP address and port of the RDS DB instance.
   • -d indicates the name of the database to be imported.
   • -U indicates the username used to log in to the database.
   • -i indicates the SQL file to be executed.

   Enter the database password when prompted.

   Example:

   >sqlcmd -S "10.65.60.79,8636" -d test -U rdsuser -i C:\test\objects.sql
   Enter password:

   Method 2: Use bcp to import data.

   >bcp dbname.schema_name.table_name in C:\test\table_name.txt -n -S Server -U username -b 2000

   • in indicates the directory which the data is imported to.
   • -n indicates that the native (database) data types are used for performing bulk-copy operations.
   • -S indicates the address to be used by the bcp tool to connect to the Microsoft SQL Server DB instance.
   • -U indicates the database username.
   • -b indicates the lines of data imported in a batch.

   Enter the database password when prompted.

   Example:

   C:\test>bcp test.dbo.t1 in c:\test\t1.txt -n -S "10.65.60.79,8636" -U rdsuser -b 2000
   Enter password:

2. Check the data import result.

   select * from sys.databases;

   Figure 1 Data import result
   

Parent topic: Data Migration