backup the whole databases from sql server 2008 R2

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SQL-Server

i have more than 50 databases in server

how to backup all the databases form the sql server 2008 R2.

Thanks ,

Posted 25-Dec-13 18:18pm

King Fisher

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2 solutions

Solution 1

This script will give you a list of databases

SQL

SELECT name, database_id, create_date
FROM sys.databases ;
GO

This will backup a database:

BACKUP DATABASE AdventureWorks2012 TO DISK='d:\adw.bak'

I don't know if you can use a select to do multiple backups, but if all else fails, you could use a CURSOR and 'EXEC' to create and run SQL that backs up all your databases.

Actually, the easy way is to run this:

SQL

select 'BACKUP DATABASE ' + NAME + ' TO DISK=''d:\' + NAME + '.bak'''
from sys.databases;

which will create a table full of the backup commands you need. Then you can just run them, one by one, or in sequence, in Management Studio or in a proc.

Posted 25-Dec-13 18:41pm

Christian Graus

Updated 25-Dec-13 19:42pm

v2

Comments

King Fisher 26-Dec-13 1:15am

this is okay for backup a single database .but how to do more than 1 database?

Christian Graus 26-Dec-13 1:40am

Read my answer again. You can LIST all the databases using the SQL I gave you. You can use the DB name to form a file name as well. I don't know if you can do a BACKUP inside a select ( I doubt it ), but I bet you can write code to form the SQL to back up each database, using a cursor, then use EXEC to execute each line in turn to back up each database.

Just a sec, let me show you something.

King Fisher 26-Dec-13 3:42am

thanks for your timing..i solved this

Christian Graus 26-Dec-13 5:26am

Yes, you did what I told you to :-) Normally I would test SQL before I give it to people, but I had no intention of waiting for all my DBs to back up.

Christian Graus 26-Dec-13 5:27am

I suspect your solution will not work if a database has been deleted, you should add code to check if @db_name is null, which it will be, in that case.

King Fisher 26-Dec-13 5:52am

i think ,that is impossible (means @d_name is null)

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King Fisher · Accepted Answer · 2013-12-25T21:42:00

SQL

declare @db_name as nvarchar(max);
declare @id as int;
declare @end_id as int;
declare @filename as nvarchar(max);
begin
select @id=1
select @end_id= max(database_id) from sys.databases
while(@id < @end_id)
begin
select @db_name=name from sys.databases  where database_id=@id
set @filename='D:\BK\'+@db_name+'.bak'
backup database @db_name to disk =@filename;
set @id=@id+1
end
end