Database is made offline to move its physical files. There can be many ways to make a database offline. But there are three main methods which are used frequently to make the database offline. These methods are given below:
1. With the Help of Alter Database Command
We can make the database offline or online with the help of the Alter database
command. The Alter Database
command to make the database offline is:
ALTER DATABASE database name SET Offline
If we want to make the database online, we can use the following Alter Database
command:
ALTER DATABASE database name SET Online
2. With the Help of the Db_options
We can also use the db_options
command to make a database offline or online. To make a database offline, we can use the following command:
sp_dboption databasename ,'offline',true
To make the database online, we can use the following command:
sp_dboption databasename ,'offline',false
3. With the Help of SQL Server Management Studio
We can also use the SQL Server Management Studio to make a database offline as shown in the given figure. To make database offline, we have to follow the step shown in figure 1 and to bring back the database online, we needed to follow the step shown in figure 2:

Figure 1

Figure 2