Sometimes things that seem complicated are much easier then you think and this is the power of using T-SQL to take care of repetitive tasks. One of these tasks may be the need to backup all databases on your server. This is not a big deal if you have a handful of databases, but I have seen several servers where there are 100+ databases on the same instance of SQL Server. You could use SQL Server Management Studio to backup the databases or even use Maintenance Plans, but using T-SQL is a much simpler and faster approach.
With the use of T-SQL you can generate your backup commands and with the use of cursors you can cursor through all of your databases to back them up one by one. This is a very straight forward process and you only need a handful of commands to do this.
Here is the script that will allow you to backup each database within your instance of SQL Server. You will need to change the @path to the appropriate backup directory.
File Naming Format DBname_YYYYDDMM.BAK
DECLARE @name VARCHAR(50) -- database name DECLARE @path VARCHAR(256) -- path for backup files DECLARE @fileName VARCHAR(256) -- filename for backup DECLARE @fileDate VARCHAR(20) -- used for file name
-- specify database backup directory SET @path = 'C:\Backup\'
-- specify filename format SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112)
DECLARE db_cursor CURSOR FOR SELECT name FROM master.dbo.sysdatabases WHERE name NOT IN ('master','model','msdb','tempdb') -- exclude these databases
OPEN db_cursor FETCH NEXT FROM db_cursor INTO @name
WHILE @@FETCH_STATUS = 0 BEGIN SET @fileName = @path + @name + '_' + @fileDate + '.BAK' BACKUP DATABASE @name TO DISK = @fileName
FETCH NEXT FROM db_cursor INTO @name END
CLOSE db_cursor DEALLOCATE db_cursor
File Naming Format DBname_YYYYDDMM_HHMMSS.BAK
If you want to also include the time in the filename you can replace this line in the above script:
SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112)
with this line:
SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112) + REPLACE(CONVERT(VARCHAR(20),GETDATE(),108),':','')
In this script we are bypassing the system databases, but these could easily be included as well. You could also change this into a stored procedure and pass in a database name or if left NULL it backups all databases. Any way you choose to use it, this script gives you the starting point to simply backup all of your databases.
Also, if you wanted to bypass some of your user databases you can include them in the NOT IN section as well.
- Add this script to your toolbox
- Modify this script and make it a stored procedure to include one or many parameters
- Enhance the script to use additional BACKUP options
Last Update: 10/15/2012
About the author
View all my tips