sql server 定时备份数据库

Posted 2020-08-30 阿文sky
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CREATE  PROCEDURE [dbo].[SP_DBBackup_EveryNight_Local] 
@cycle INT,					---保存周期
@IsLocal INT,				---是否为本地  0表示是 1表示否
@SavePath NVARCHAR(100),	---文件保存路径 \\192.168.19.102\DataBaseBack
@DBPrefix NVARCHAR(50),		---生成文件的前缀
@Server VARCHAR(50),		---服务器IP  192.168.19.102
@UserName VARCHAR(50),		---登录服务器用户名  administrator
@PassWord VARCHAR(20)		---登录服务器密码   Soft_2016
AS
    BEGIN  
        DECLARE @backpath2 VARCHAR(100)  
        DECLARE @command VARCHAR(200)   
        
        --创建临时表
        CREATE TABLE #Filetabel
            (
              FILEPATH VARCHAR(100) NULL
            )
    --调用dos命令登录服务器
    IF @IsLocal = 1
    BEGIN
		SET @command = ‘net use ‘ + @SavePath + ‘ ‘ + @PassWord + ‘ /user:‘ + @Server + ‘\‘ + @UserName 
        EXEC master..xp_cmdshell @command  
    END
        --将共享目录所有文件名添加至临时表
        SET @command = ‘dir /b ‘ +  @SavePath
        INSERT  INTO #Filetabel
                EXEC master..xp_cmdshell @command
                
        DELETE  FROM #Filetabel
        WHERE   FILEPATH IS NULL
        
        WHILE EXISTS ( SELECT   *
                       FROM     #Filetabel )
            BEGIN
                DECLARE @fileName VARCHAR(100)
                SET @fileName = ( SELECT TOP 1
                                            *
                                  FROM      #Filetabel
                                  ORDER BY  FILEPATH
                                )
			--定义变量获取文件时间
                DECLARE @fileTime VARCHAR(20)
                DECLARE @fDateTime DATETIME
                IF @fileName IS NOT NULL
                    BEGIN
                        SET @fileTime = SUBSTRING(@fileName, 17, 8)
                        SET @fDateTime = CONVERT(DATETIME, @fileTime)
                        DECLARE @lastTime DATETIME
                        SET @lastTime = DATEADD(DAY, [email protected],
                                                CONVERT(VARCHAR(10), GETDATE(), 111))
                        IF @fDateTime <= @lastTime
                            BEGIN 
							--删除备份
                                DECLARE @filePath VARCHAR(100)
                                SET @filePath = ‘del ‘ + @SavePath + ‘\‘ + @fileName
                                EXEC master..xp_cmdshell @filePath
                            END
                            
                            --删除该条数据
                                DELETE  FROM #Filetabel
                                WHERE   FILEPATH = @fileName
                    END
            END
            
            --删除临时表
                                DROP TABLE #Filetabel
                                    --将数据库备份到服务器
                                SET @backpath2 = @SavePath + ‘\‘ + @DBPrefix + ‘_‘ + REPLACE(CONVERT(VARCHAR(10), GETDATE(), 120),
                                              ‘-‘, ‘‘) + ‘_back.bak‘  
                                BACKUP DATABASE [LGS] TO [email protected] WITH INIT ,FORMAT   
    END 
GO
执行EXEC [dbo].[SP_DBBackup_EveryNight_Local] 5,0,‘F:\LGSCMS_20141117_Back‘,‘LGS‘,‘‘,‘‘,‘‘