I am playing around with SQL Azure and in my learning curve. I Have migrated a database from my on premises instance to the Azure server. Now my question is, how do I move a database from Azure to on premises instance.
Source : Azure , Database name : Azuretest
Destination : Sql server 2016 on premises instance in my laptop.
Is Azure to On Premise database migration possible?
- Export the Data-tier to local disk from the Azure database. It will save a bacpac file.
Right click the database you need to export --> Task-->Export data-tier application and follow the steps until the bacpac file is created.
- Import the backpack file from the local disk to the On premises Instance by using the same utility from tasks.
Right click the database branch in your on premise instance --> Import data tier application and now use the bacpac file saved in first step to create the database.
Just in case someone needs more details on the steps as mentioned by Daniel:
- Export the Data-tier to local disk from the Azure database. It will save a bacpac file.
Right click the database you need to export --> Task-->Export data-tier application and follow the steps until the bacpac file is created.
- Import the backpack file from the local disk to the On premises Instance by using the same utility from tasks.
Right click the database branch in your on premise instance --> Import data tier application and now use the bacpac file saved in first step to create the database.
Thank you Daniel.
Creating an empty database in Azure.
USE [master]
GO
CREATE DATABASE [Migrate2OnPrem]
GO
ALTER DATABASE [Migrate2OnPrem] SET COMPATIBILITY_LEVEL = 130
GO
ALTER DATABASE [Migrate2OnPrem] SET QUERY_STORE (OPERATION_MODE = READ_WRITE,
CLEANUP_POLICY = (STALE_QUERY_THRESHOLD_DAYS = 7), DATA_FLUSH_INTERVAL_SECONDS = 900,
INTERVAL_LENGTH_MINUTES = 60, MAX_STORAGE_SIZE_MB = 10, QUERY_CAPTURE_MODE = AUTO,
SIZE_BASED_CLEANUP_MODE = AUTO)
GO
ALTER DATABASE [Migrate2OnPrem] SET READ_WRITE GO
Exporting database to a .bacpac file
Using sqlpackage.exe action Export create a .bacpac file at my local host.
cd "C:\Program Files\Microsoft SQL Server\130\DAC\bin\"
.\SqlPackage.exe /Action:Export /SourceServerName:tcp:taiobadw.database.windows.net,1433
/SourceDatabaseName:Migrate2OnPrem /su:taiobmdjamshed /sp:password
/TargetFile:"C:\Migrate2OnPrem.bacpac"
Importing to On-Prem server
Using sqlpackage.exe action Import import the .bacpac file from my local host (that you created in the step above.
.\sqlpackage.exe /a:Import /sf:C:\Migrate2OnPrem.bacpac /tsn:localhost /tdn:Migrate2OnPrem
Besides export\import .bacpac described by other users, there is another way to migrate a database, which in many cases may be preferable.
You can create a .sql script of Azure database and then run it in SQL Server
Generate t-sql script via Sql Server Managment Studio
right click on database -> Generate script
The Script Wizard will open.
In the Set Scripting Options section, click the Advanced. Specify the Types of data for script option to Schema and Data. Pay attention to the options Script for server version and Script for database engine type, here you can choose which database to create the script for.
Specify where the script should be saved and click Finish
To import a .sql file, simply open it in Sql Server Managment Studio and press F5. If the .sql file is very large then you can use the sqlcmd utility.
sqlcmd -S <server> -i C:\<your file here>.sql
Note, when creating a .sql script or Export data tier application, the data should not be changed in the database, since these methods do not provide transactional consistency of the exported data. If you are exporting a live database, then create a copy of it temporarily for export.
CREATE DATABASE AdventureWorksCopy
AS COPY OF AdventureWorks
GO
