/*
 注意：由于用GUI备份会导致备份链中断，而作业无法实现“仅复制备份”，所以使用脚本备份
 create by huangzj 20120510
 */
 
 --定义备份时间，精确到秒
 DECLARE @date NVARCHAR(64)
 SELECT  @date = SUBSTRING(CONVERT(VARCHAR(20), GETDATE(), 121), 1, 4) + '_'
         + SUBSTRING(CONVERT(VARCHAR(20), GETDATE(), 121), 6, 2) + '_'
         + SUBSTRING(CONVERT(VARCHAR(20), GETDATE(), 121), 9, 2) + '_'
         + CONVERT(CHAR(2), DATEPART(hh, GETDATE()))
         + CONVERT(CHAR(2), DATEPART(mi, GETDATE()))
         + CONVERT(CHAR(2), DATEPART(ss, GETDATE()))
 --定义要备份的数据库名
 DECLARE @db NVARCHAR(20)
 SET @db = '' + 'HK_ERP_BaTa' + ''
 --定义备份文件的全名
 DECLARE @bakname NVARCHAR(128)
 SELECT  @bakname = @db + '_' + @date
 --定义备份存放路径
 DECLARE @disk NVARCHAR(256)
 SELECT  @disk = N'DataBak' + @bakname + '.bak'
 --定义备份描述
 DECLARE @name NVARCHAR(128)
 SELECT  @name = @db + '-完整 数据库 备份'
 --定义错误信息
 DECLARE @error NVARCHAR(128)
 SELECT  @error = '验证失败。找不到数据库“' + @db + '”的备份信息。'
 
 BACKUP DATABASE @db TO  DISK = @disk WITH  COPY_ONLY, NOFORMAT, NOINIT,  
 NAME =@name, SKIP, NOREWIND, NOUNLOAD,  STATS = 10, CHECKSUM ;
 DECLARE @backupSetId AS INT
 SELECT  @backupSetId = position
 FROM    msdb..backupset
 WHERE   database_name = @db
         AND backup_set_id = ( SELECT    MAX(backup_set_id)
                               FROM      msdb..backupset
                               WHERE     database_name = @db
                             )
 IF @backupSetId IS NULL 
     BEGIN
         RAISERROR(@error, 16, 1)
     END
 RESTORE VERIFYONLY FROM  DISK = @disk WITH  FILE = @backupSetId,  NOUNLOAD,  NOREWIND
 GO