/******************************************* 
 * 批量备份数据库且删除3天前的备份 
 *******************************************/ 
DECLARE @backupfile VARCHAR(1024)  
DECLARE @backdesc VARCHAR(1024)  
DECLARE @filename VARCHAR(1024)  
DECLARE @path VARCHAR(1024)  
DECLARE @dbname VARCHAR(1024)  
DECLARE @extension_name VARCHAR(16)  
--备份参数  
DECLARE tmp_Cur CURSOR  
FOR  
  SELECT NAME  
  FROM  [sys].[databases]  
  WHERE  NAME NOT IN ( 'master', 'model','msdb','tempdb' )  
SET @path = N'D:\Backup\Autoback\';  
SET @extension_name = N'bak';  
--生成文件名  
SET @filename = CONVERT(VARCHAR(1024), GETDATE(), 120)  
SET @filename = REPLACE(@filename, ':', '')  
SET @filename = REPLACE(@filename, '-', '')  
SET @filename = REPLACE(@filename, ' ', '')  
SET @filename = @filename + '_' + CONVERT (VARCHAR(3), DATEPART(ms, GETDATE()))  
  + N'.' + @extension_name  
OPEN tmp_Cur;  
FETCH NEXT FROM tmp_Cur INTO @dbname;  
WHILE @@FETCH_STATUS = 0   
  BEGIN  
    -- 得到完整目标文件，数据库将备份到这个文件中  
    SET @backupfile = @path + @dbname + @filename  
    --SELECT @backupfile  
    SET @backdesc =@dbname + N'-完整 数据库 备份'  
    -- 开始备份, COMPRESSION 参数表示压缩，可节省磁盘空间  
    BACKUP DATABASE @dbname TO DISK = @backupfile WITH NOFORMAT, NOINIT, NAME = @backdesc, SKIP, NOREWIND, NOUNLOAD, STATS = 10, COMPRESSION  
    FETCH NEXT FROM tmp_Cur INTO @dbname  
  END  
CLOSE tmp_Cur;  
DEALLOCATE tmp_Cur;  
-- 删除3天前的备份文件  
DECLARE @olddate DATETIME  
SELECT @olddate = DATEADD(d, -3, GETDATE())  
-- 执行删除 (SQL 2008 具备)  
EXECUTE master.dbo.xp_delete_file 0, @path, @extension_name, @olddate, 1 
[sql] view plain copy print"color: #ff0000">总结

以上所述是小编给大家介绍的SqlServer批量备份多个数据库且删除3天前的备份，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！