采用osql调用sql脚本的方式，自动备份全部数据库，并导出执行结果。

备份数据库的批处理文件（auto_backup_db.bat），他采用信任连接的方式调用auto_backup_db.sql脚本实现备份功能，

形如：backup_database_log_2011-10-09.txt。

@echo off
@echo start to backup database
osql -E -i auto_backup_db.sql -o backup_database_log.txt
@echo finished backup database
FOR /F "tokens=1-3 delims=- " %%i IN ('date /t') DO SET DATE=%%i-%%j-%%k
rename "backup_database_log.txt" "backup_database_log_%DATE%.txt"
@echo on

USE master
go
DECLARE @bak_path NVARCHAR(200)
DECLARE @bak_file_name NVARCHAR(200)
--设置文件备份路径
SET @bak_path = 'E:\DataBaseBAK'
--利用游标遍历，逐个备份数据库
DECLARE @db_name SYSNAME 
DECLARE cur_database CURSOR FOR
SELECT  [name]-- 查询所有数据库
    FROM    sys.databases
    WHERE   [state] = 0 -- 0 = ONLINE 在线状态
    AND [name] NOT IN ( 'master', 'model', 'msdb', 'tempdb', 'ReportServer','ReportServerTempDB')
    --系统数据库、演示数据库除外

OPEN cur_database
FETCH NEXT FROM cur_database INTO @db_name
WHILE ( @@FETCH_STATUS = 0 ) 
    BEGIN
        --设置备份文件名称，形如：dbname_2011-10-09.bak
        SET @bak_file_name = @bak_path + '\' + @db_name + '_'
            + CONVERT(VARCHAR(10), GETDATE(), 120) + '.bak'
                --开始完整备份        
        BACKUP DATABASE @db_name TO DISK = @bak_file_name  
        FETCH NEXT FROM cur_database INTO @db_name
    END
    CLOSE cur_database
DEALLOCATE cur_database

@ECHO OFF
@TITLE Backing up source safe databases
SET VSS_Install_Path="C:\Program Files\Microsoft Visual SourceSafe\"
SET VSS_DB="\\192.168.0.244\vss"
SET Bak_File="e:\%DATE%_vss_backup.ssa"
SET VSS_Admin_Name="admin"
SET VSS_Admin_Password="your_password"
FOR /F "tokens=1-3 delims=- " %%i IN ('date /t') DO SET DATE=%%i-%%j-%%k
%VSS_Install_Path%"ssarc" -d- -y%VSS_Admin_Name%,%VSS_Admin_Password% -s%VSS_DB%  %Bak_File% $/
@ECHO finished backup vss