【求助】急问：oracle的定期自动备份
本人在网上找到文章做oracle的定期自动备份，写好的脚本，名字叫：ora-backup，内容如下：./oracle/ora―env
/u01/product/oracle9i/bin/exp jsiq/pass file=/opt/backup/$rq.dmp log=/opt/backup/$rq.log
已经试过直接执行ora-backup时是可以备份的，现在问题出在linux的cron上，定期执行也是可以执行的，就是备份数据库就出错了，出错后，oracle用户收到Mail，我是通过/var/spool/mail/oracle查看的，错误如下：
Received: (from oracle@localhost)
by localhost.localdomain (8.13.1/8.13.1/Submit) id k37CK1V9003691;
Fri, 7 Apr 2006 20:20:01 +0800
Date: Fri, 7 Apr 2006 20:20:01 +0800
Message-Id: <200604071220.k37CK1V9003691@localhost.localdomain>
From: [email]root@localhost.loca[/email]ldomain (Cron Daemon)
To: [email]oracle@localhost.loca[/email]ldomain
Subject: Cron <oracle@localhost> /u01/product/oracle9i/ora-backup
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/u01/product/oracle9i>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=oracle>
X-Cron-Env: <USER=oracle>
Export: Release 9.2.0.4.0 - Production on Fri Apr 7 20:20:01 2006
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
EXP-00056:
EXP-00000: Export terminated unsuccessfully
我就不知道是为什么会这样，我觉得定期执行也是执行了的，可是就是不能导出数据。哪位高手请帮帮我，感谢先。
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