我在使用DUMP DATEBASE 备份数据库时遇到了问题，请求帮助！！！

jzzhufeng

我对SYBASE知之甚少，在备份单位数据库的时候进行不下去，向各位SYBASE高手请教，请不吝赐教！
   mpcdb是我的用户数据库，操作系统为HP-UNIX。
   我使用备份的命令和返回结果如下：
isql   -Usa -Pxxxx -Sjzwg
1>;dump database mpcdb to "/dev/rmt/0mn" capacity=16000000 with init
2>;go

Server Message:  Number  3216, Severity  10
Server 'jzwg', Line 1:
Backup Server session id is:  42.  Use this value when executing the 'sp_volchanged' system stored procedure after fulfilling any volume change request from the Backup Server.
Server Message:  Number  605801, Severity  1
Server 'jzwg_back', Procedure 'bs_write_header', Line 0:
Backup Server: 6.58.1.1: Device '/dev/rmt/0mn' supports multiple dump files per volume set.
Server Message:  Number  602801, Severity  1
Server 'jzwg_back', Procedure 'bs_write_header', Line 0:
Backup Server: 6.28.1.1: Dumpfile name 'mpcdb0325709D12  ' section number 1 mounted on tape drive '/dev/rmt/0mn'
Server Message:  Number  405801, Severity  1
Server 'jzwg_back', Procedure 'bs_begin_phase', Line 0:
Backup Server: 4.58.1.1: Database mpcdb: 4 kilobytes DUMPed.
Server Message:  Number  414102, Severity  2
Server 'jzwg_back', Procedure 'bs_begin_phase', Line 0:
Backup Server: 4.141.2.22: [2] The 'write' call failed for device '/dev/rmt/0mn' with error number 5 (I/O error). Refer to your operating system documentation for further details.
Server Message:  Number  8009, Severity  16
Server 'jzwg', Line 1:
Error encountered by Backup Server.  Please refer to Backup Server messages for details.

还望各位能给我诊断诊断，万分感谢！！！！！！！！

RS9000

'write' call failed for device '/dev/rmt/0mn' with error number 5 (I/O error).

检查一下你的磁带机

冷月无声

先看看能否备份到硬盘上啊！

fzoe

我觉得是你的磁带的写保护打开了