在CentOS 6.4环境下,实现每天晚上23:00备份用户数据库方案:利用linux下的定时任务机制,命令为crontab;导出数据库用到exp工具
目标:在CentOS 6.4环境下,实现每天晚上23:00备份用户数据库方案:利用linux下的定时任务机制,命令为crontab;导出数据库用到exp工具;然后让crontab定时去调用exp来 实现自动备份的目的。
步骤:
1,用oralce用户登录--》
编写备份Oracle数据库的sh文件--oracle_backup.sh;
内容为:su - oracle c "$bin/exp $username/$password file=$date_backup.dmp owner=$user log=$date_log"
动态拼接日期的sh: rq = `date +"%Y%m%d"`
为上面的命令建立文件夹
mkdir backup_data; 存放备份文件
mkdir back_log; 存放log
完后,记得给该文件赋予可写的权限: chmod 777 $path/oracle_backup.sh
2, 用root用户登录执行命令--》
# crontab -e
内容为:
0 23 * * * "$path/oracle_back.sh" (分 时 天 月 星期)
此命令会在 /var/spool/cron 下生成一个root文件,内容为上面一行的输入。
3,检查是否成功
crontab -l 可以查看当前用户下的周期任务
crontab -r 移除当前用户下的周期任务
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