使用oracle數據庫用戶建立數據庫冷備腳本：
## 備份trade用戶數據
## 2016-02-05 11?00
/home/oracle/product/11gR2/bin/exp trade/trade@ORA11G file="/home/oracle/trade/`date +%Y%m%d%H%M%S`.dmp" log="/home/oracle/trade/`date +%Y%m%d%H%M%S`.log";*/5 * * * * sh /home/oracle/trade/dmp.shFrom [email protected] Thu Feb 4 14:40:01 2016
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Subject: Cron <oracle@hundsun> /home/oracle/product/11gR2/bin/exp trade/trade@ORA11G file="/home/oracle/trade/`date +
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X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/home/oracle>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=oracle>
X-Cron-Env: <USER=oracle>
Date: Thu, 4 Feb 2016 14:40:01 +0800 (CST)
Status: RO
/bin/sh: -c: line 0: unexpected EOF while looking for matching ``'
/bin/sh: -c: line 1: syntax error: unexpected end of filecrontab執行時，是沒有在哪個帳戶下執行這樣的概念的，所以你想用的那個帳戶下的環境變量在腳本里用到的都需要在crontab裏重新設置一下，出現這樣的問題，在腳本里添加環境變量。然後export就可以了。
<pre name="code" class="plain">## 備份trade用戶數據
## 2016-02-05 11?00
## oracle 參數設置
ORACLE_BASE=/home/oracle/product
ORACLE_HOME=/home/oracle/product/11gR2
ORACLE_SID=ora11g
export ORACLE_BASE ORACLE_HOME ORACLE_SID
/home/oracle/product/11gR2/bin/exp trade/trade@ORA11G file="/home/oracle/trade/`date +%Y%m%d%H%M%S`.dmp" log="/home/oracle/trade/`date +%Y%m%d%H%M%S`.log";