SQL Server批量备份数据库

--批量备份数据库201911
--开启文件夹权限
GO
SP_CONFIGURE 'SHOW ADVANCED OPTIONS',1
RECONFIGURE
GO
SP_CONFIGURE 'XP_CMDSHELL',1
RECONFIGURE
GO
 
DECLARE
      @FileName VARCHAR(200),
      @CurrentTime VARCHAR(50),
      @DBName VARCHAR(100),
      @SQL VARCHAR(1000),
      @FilePath VARCHAR(100)
 
--SET @CurrentTime = CONVERT(CHAR(8),GETDATE(),112) + CAST(DATEPART(hh, GETDATE()) AS VARCHAR) + CAST(DATEPART(mi, GETDATE()) AS VARCHAR)
--年月日
SET @CurrentTime = CONVERT(CHAR(8),GETDATE(),112)
 
SET @FilePath = 'E:DBBak' + @CurrentTime + ''
--select CONVERT(CHAR(8),GETDATE(),112)
--文件夹不存在，则创建
declare @TEMP TABLE(A INT,B INT,C INT)--建立虚拟表，用来判断文件夹是否存在
INSERT @TEMP EXEC [MASTER]..XP_FILEEXIST @FilePath
IF NOT EXISTS(SELECT * FROM @TEMP WHERE B=1)
BEGIN
    --XP_CMDSHELL不允许使用变量拼接，所以使用exec方法
    declare @EX NVARCHAR(255)
    SET @EX = 'EXEC XP_CMDSHELL ''MKDIR ' + @FilePath + '''';
    EXEC(@EX)
END
 


 --获取所有非系统数据库
DECLARE CurDBName CURSOR FOR
    SELECT NAME FROM Master..SysDatabases where dbid>4
 
--循环备份数据库
OPEN CurDBName
FETCH NEXT FROM CurDBName INTO @DBName
WHILE @@FETCH_STATUS = 0
BEGIN
    --Execute Backup
    SET @FileName = @FilePath + @DBName + '_' + @CurrentTime
    SET @SQL = 'BACKUP DATABASE ['+ @DBName +'] TO DISK = ''' + @FileName + '.bak' +
     ''' WITH NOINIT, NOUNLOAD, NAME = N''' + @DBName + '_backup'', NOSKIP, STATS = 10, NOFORMAT'
    EXEC(@SQL)
 
    --Get Next DataBase
    FETCH NEXT FROM CurDBName INTO @DBName
END
 
CLOSE CurDBName
DEALLOCATE CurDBName


/*
--删除30天之前的备份文件
--开启文件夹权限
GO
SP_CONFIGURE 'SHOW ADVANCED OPTIONS',1
RECONFIGURE
GO
SP_CONFIGURE 'XP_CMDSHELL',1
RECONFIGURE
GO
EXEC xp_cmdshell 'forfiles /p F:DBBak /m * -d -30 /c "cmd /c rd /s /q @path"'
*/