How to Copy SQL Server Database

Developers and DBAs often encounter a situation when they need to copy a database from one computer to another for the purposes of development, testing, or diagnostics. With dbForge Studio for SQL Server, you can duplicate a SQL Server database in several ways:

• Detaching and attaching a database
• Comparing and synchronizing schemas and data of source and target databases
• Restoring a backed-up source database to a target database.

In this article, we will take a closer look at each method and determine the differences between them.

Move a SQL Database Using the Detach and Attach Method

NOTE: To use this method, a SQL Server version on the target must be the same or higher than the one on the source.

1. In Database Explorer, right-click a source database, point to Tasks, and select Detach Database... from the shortcut menu.
   
   
   
   
   
2. The Detach Database dialog box opens with the name of the database in it. Click OK.
   
   
   
   
   
3. Duplicate the detached database from the source server to the target one:
   • In desktop mode, press the Windows key and R at the same time, to show the Run command line.
   • The Run dialog box opens. Type "\\dbmssql" and click OK.
     
     
     
     
   • Copy the detached database file (*.mdf) together with the log file (*.ldf) and paste them to the target location or the folder shared between two servers.
NOTE: To perform step 3, you need to have administrator privileges granted.
4. Right-click the target connection, point to Tasks, and select Attach Database... from the shortcut menu.
   
   
   
   
   
5. The Browse Files and Attach Database dialog boxes open. In the Browse Files dialog box, select the required database and click OK.
   
   
   
   
6. The database file and log file will appear in the Attach Database dialog box. Click OK.
   
   
   
   
7. Reattach the database to the source connection.

dbForge Studio for SQL Server enables to automate the above-mentioned procedure with help of the SQL Server Copy Database Wizard.

The Detach and Attach Method pros and cons

• Pros:
  • It is the fastest way to copy a database.
• Cons:
  • A source database should be offline.
  • All connections will be lost.
  • A shared folder is required.
  • A SQL Server version on the target must be the same or higher than on the source.
  • The method cannot be used on Windows Azure.

Transfer a Database from one Server to Another Using Backup and Restore Method

NOTE: To use this method, the SQL Server version on the target must be the same or higher than the one on the source.

1. Back up the source database. See the detailed step-by-step guidance on how to backup an SQL Server database. NOTE: You should back up the source database to the folder shared between the servers. Otherwise, you should move the backup file to the target server - see step 3 for the Detach and Attach method.
2. Create a new target database: in Database Explorer, right-click the target connection and select New Database.
   
   
3. Right-click the new database and select Restore. The Restore wizard opens.
4. On the Source and Target tab of the wizard:
   • In Source for Restore, specify the path to the backup file.
   • In Destination to Restore, select the target database.
   • Click Next.
   
   
   
5. (Optional) On the Options tab of the wizard, set the required options for the backup procedure. Click Restore.
   
   
   
   
6. Wait till the restore process is completed and click Finish.
   
   

Backup and Restore Method pros and cons

• Pros:
  • A source database may remain online.
  • Connections will be preserved.
• Cons:
  • It is a bit slower than the previous method.
  • A SQL Server version on the target must be the same or higher than on the source.
  • A shared folder is required.
  • The method cannot be used on Windows Azure.

Create a Copy of Database Using Data and Schema Comparison and Synchronization Method

1. Create a new target database: in Database Explorer, right-click the target connection and select New Database.
   
   
   
   
2. Compare and synchronize schemas of the source database with the target database. See the detailed step-by-step guidance on how to compare and synchronize SQL schemas.
   
   
   
   
3. Compare and synchronize data of the source database with the target database. See the detailed step-by-step guidance on how to compare and synchronize SQL data.
   
   
   
   

Schema and Data Compare&Sync Method pros and cons

• Pros:
  • The source database may remain online.
  • Connections will be preserved.
  • It does not require a shared folder.
  • The method does not depend on the SQL Server version.
  • It can be used on Windows Azure.
• Cons:
  • It is a time-consuming method.

Also, you can watch this video to learn how to migrate a database with the Schema and Data Compare functionality provided in dbForge Studio for SQL Server.