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HomeDatabaseMysql TutorialOracle数据库之【备份与恢复篇】

rman功能强大,操作相对复杂一些,对普通的开发人员来说,在日常工作当中一般不需要使用,感兴趣的同事可以通过查看Oracle相关的资

一、物理备份工具rman(Recovery Manager)

rman功能强大,操作相对复杂一些,对普通的开发人员来说,,在日常工作当中一般不需要使用,感兴趣的同事可以通过查看Oracle相关的资料了解。

二、逻辑备份工具exp & imp

exp & imp工具程序使用简单、方便,一般与数据库有关的开发人员都可能要使用到。本课程将主要介绍exp & imp。

三、数据装载工具SQL Loader

SQL Loader主要用于将文本文件装载到数据库中。

下面重点介绍exp & imp
1、使用exp & imp 需要注意的事项
使用exp和imp需要保证服务器和客户端的字符集一致,通过exp导出时,客户端的版本最好和服务器一致,通过imp恢复时的数据库版本不能比原有的数据库版本低。

  • --2、备份指定的表  
  • --3、按用户备份  
  • --4、全库备份  
  • --5、备份指定的表空间  
  • --6、按条件导出  
  • --7、从备份文件中恢复指定的表的数据  
  • --8、恢复整个备份文件  
  • 下面介绍数据装载工具SQL Loader
    1、基本步骤
    使用SQL Loader工具迁移数据一般分为三个步骤:
    第一、生成文本文件。
    第二、编写控制文件。
    第三、导入的命令。
    2、编写控制文件
    LOAD DATA INFILE "D:\t_card_bill.txt"
    APPEND INTO TABLE t_Card_bill FIELDS TERMINATED BY ','
    OPTIONALLY ENCLOSED BY '"'
    (uaccountno,billtype, fee, serviceno, fee_date date 'YYYY-MM-DD HH24:MI:SS',
    fee_enddate date 'YYYY-MM-DD HH24:MI:SS', caller_number, called_number, duration)
    3、导入的命令
    sqlldr username/password@database control=控制文件所在路径\控制文件名
    readsize=5000000 bindsize=5000000 rows=1000
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