/*
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

------解决方案--------------------

给你搞了半天，就是权限问题，