SQL Server数据库备份、差异备份、日志备份脚本.250108

1，sp脚本

USE [master]
GO
/****** Object:  StoredProcedure [dbo].[sp_BackupDatabase]    Script Date: 2025/1/8 10:43:05 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-- Author: Amadeus

-- Create date: 2021-10-20   exec sp_BackupDatabase L

-- Description: 备份数据库,备份路径C:\Database_BackUp\ 可自行修改

-- Parameter1: 备份类型 F=全部, D=差异, L=日志

ALTER PROCEDURE [dbo].[sp_BackupDatabase]
@backupType CHAR(1)
AS
BEGIN
SET NOCOUNT ON;

declare @filepath_backup varchar(100)
declare @dateTime varchar(30),@del_time_stamp varchar(50)
DECLARE @sqlCommand NVARCHAR(1000)
DECLARE @sourcePath  nvarchar(max) 
DECLARE @destionationPath  nvarchar(max) 
DECLARE @cmdStr  nvarchar(max) 

-- 创建数据库对应文件夹
EXECUTE master.dbo.xp_create_subdir N'D:\Database_BackUp\Full\'
EXECUTE master.dbo.xp_create_subdir N'D:\Database_BackUp\Difference\'
EXECUTE master.dbo.xp_create_subdir N'D:\Database_BackUp\Log_Bak\'

IF @backupType = 'F'
set @filepath_backup='D:\Database_BackUp\Full\'
IF @backupType = 'D'
set @filepath_backup='D:\Database_BackUp\Difference\'
IF @backupType = 'L'
set @filepath_backup='D:\Database_BackUp\Log_Bak\'

SET ANSI_WARNINGS OFF
SET @dateTime = replace(convert(varchar,current_timestamp, 112)+'_'+convert(varchar,current_timestamp, 108),':','')

----删除超过30天的备份文件
DECLARE @delete_time datetime
set @delete_time = getdate() -30

EXECUTE master.dbo.xp_delete_file 0,N'D:\Database_BackUp',N'trn',@delete_time,1
EXECUTE master.dbo.xp_delete_file 0,N'D:\Database_BackUp',N'bak',@delete_time,1

SELECT @dateTime = replace(convert(varchar,current_timestamp, 112)+'_'+convert(varchar,current_timestamp, 108),':','')

declare db_info cursor for    
SELECT NAME,recovery_model FROM MASTER.SYS.databases 
where state = 0 ---只处理online的数据库 
and name in ('Test')  ----填写需要备份的数据库

declare @databaseName nvarchar(128) 
declare @recovery_model  int
OPEN db_info    
fetch next from db_info into @databaseName,@recovery_model 
while @@fetch_status=0    
Begin    

---recovery_model 1 : FULL 2 : BULK_LOGGED 3:SIMPLE

IF @backupType = 'F' 
begin
	SET @sqlCommand = 'BACKUP DATABASE '+ @databaseName +' TO DISK = '''+ @filepath_backup + ''+ @databaseName +'_Full_'+@dateTime+'.BAK'' with STATS = 10, INIT, COMPRESSION, CHECKSUM '
	set @sourcePath = @filepath_backup + ''+ @databaseName +'_Full_'+@dateTime+'.BAK'	
end
IF @backupType = 'D' and @databaseName not in ('master','msdb','model')
begin
   SET @sqlCommand = 'BACKUP DATABASE '+ @databaseName +' TO DISK = '''+ @filepath_backup + ''+ @databaseName + '_Diff_' + @dateTime + '.BAK '' WITH DIFFERENTIAL, STATS = 10, INIT, COMPRESSION'
   set @sourcePath = @filepath_backup + ''+ @databaseName +'_Diff_'+@dateTime+'.BAK' 
end
IF @backupType = 'L' and @recovery_model <> 3 and @databaseName not in ('master','msdb','model')
begin
	SET @sqlCommand = 'BACKUP LOG '+ @databaseName +' TO DISK = '''+ @filepath_backup + '' + @databaseName +'_Log_' + @dateTime + '.TRN'' with STATS = 10, INIT, COMPRESSION'
	set @sourcePath = @filepath_backup + ''+ @databaseName +'_Log_'+@dateTime+'.TRN' 
end
print @sqlCommand

EXECUTE sp_executesql @sqlCommand 

fetch next from db_info into @databaseName,@recovery_model 
End    

close db_info    
deallocate db_info    

PRINT '-- Backup completed successfully at '+convert(varchar, getdate(), 120)    

SET ANSI_WARNINGS ON
END

2，SQL agent任务指令：

[dbo].[sp_BackupDatabase] 'F'

3，别忘了每周agent任务，跑一下数据库日志的收缩，例：test数据库

USE test;
GO 
ALTER DATABASE test
SET RECOVERY SIMPLE;  --设置简单恢复模式
GO

DBCC SHRINKFILE (test_log, 1);
GO

ALTER DATABASE test
SET RECOVERY FULL;   --恢复为原模式
GO