废话不多说了，直接给大家贴代码了，具体代码如下所示：

/******************************************* * 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?--作业定时压缩脚本支持多库 DECLARE @DatabaseName NVARCHAR(50) DECLARE @ExecuteSql NVARCHAR(MAX) SET @ExecuteSql='' DECLARE name_cursor CURSOR FOR SELECT name FROM master..sysdatabases WHERE name NOT IN ( 'master', 'model', 'msdb', 'tempdb', 'northwind','pubs','AgentSys','ydttimedtask','YiDianTongV2' ) OPEN name_cursor; FETCH NEXT FROM name_cursor INTO @DatabaseName; WHILE @@FETCH_STATUS = 0 BEGIN SET @ExecuteSql ='' SET @ExecuteSql +=' USE ['+@DatabaseName+']; DECLARE @Error INT SET @Error=(SELECT TOP 1 size/128.0 - CAST(FILEPROPERTY([NAME], ''SpaceUsed'') AS int)/128.0 AS AvailableSpaceInMB FROM sys.database_files ORDER BY [NAME] DESC) --PRINT @Error IF(@Error>1) BEGIN ALTER DATABASE ['+@DatabaseName+']　　--数据库名字 SET RECOVERY SIMPLE;　　--设置简单恢复模式 DBCC SHRINKFILE ([YiDianTongV2], 1);　　--(M)不能小于1M, DBCC SHRINKFILE ([YiDianTongV2_log], 1);　　--(M)不能小于1M ALTER DATABASE ['+@DatabaseName+'] SET RECOVERY FULL;　　--恢复为原来完整模式 END ' PRINT @ExecuteSql; --打印 EXEC(@ExecuteSql) --执行 FETCH NEXT FROM name_cursor INTO @DatabaseName; END; CLOSE name_cursor; DEALLOCATE name_cursor;

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！