RMAN学习笔记01——登录
从今天开始学习一下RMAN的使用。RMAN在Oracle中的重要性就不用多说了,反正要备份数据库不用RMAN是不可想象的。所以明确一下 RMAN的细节用法是非常必要的,从今天开始花几天时间从各个方面学习一下详细用法。本文很大程度上参考了junsansi大牛的《一步一步学RMAN》,另外参考了一些Oracle基础读物。下面开始,首先是使用RMAN前的一些准备工作。
1、使用RMAN时,需要将数据库设置为归档模式
SQL> conn sys/sys as sysdba
Connected.
SQL> show user
USER is "SYS"
SQL> archive log list
Database log mode Archive Mode
Automatic archival Enabled
Archive destination D:\oracle\oradata\dodo\archive
Oldest online log sequence 26
Next log sequence to archive 28
Current log sequence 28
开启归档方法:
a. shutdown immediate
b. startup mount
c. alter database archivelog
d. alter database opne
禁止归档方法:
a.
shutdown immediate
b. startup mount
c. alter database noarchivelog
d. alter database open
2、创建备份用户和表空间:
SQL> create tablespace recovery_tbs datafile 'D:\oracle\oradata\dodo\recovery_tbs.ora' size 15M autoextend on next 10M;
Tablespace created
SQL> create user rman identified by rman default tablespace recovery_tbs;
User created
SQL> grant connect,resource,recovery_catalog_owner to rman;
Grant succeeded
SQL> alter user rman quota unlimited on recovery_tbs;
User altered
3、登录rman:
①登录rman后使用connect target命令登录:
C:\Documents and Settings\wangxiaoqi>set oracle_sid=dodo
C:\Documents and Settings\wangxiaoqi>rman
Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
RMAN> connect target /
connected to target database: DODO (DBID=472976704)
②直接用rman命令登录:
C:\Documents and Settings\wangxiaoqi>rman target /
Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: DODO (DBID=472976704)
RMAN>
③链接远程数据库:
C:\Documents and Settings\wangxiaoqi>rman target sys/sys as
sysdba @dodo2
Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: DODO2 (DBID=472976705)
RMAN>
4、创建恢复目录:
C:\Documents and Settings\wangxiaoqi>rman
Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
RMAN> connect catalog rman/rman
connected to recovery catalog database
recovery catalog is not installed
RMAN> create catalog;
recovery catalog created
若想把恢复目录创建到其他表空间,则使用:
RMAN> create catalog tablespace XXX;
删除恢复目录:
RMAN> drop catalog;
5、连接恢复目录:
在登录RMAN后连接:
RMAN> connect catalog rman/rman
connected to recovery catalog database
也可以直接登录时就连接:
C:\Documents and Settings\wangxiaoqi>rman target / catalog rman/rman
Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: DODO (DBID=472976704)
connected to recovery catalog database
RMAN>
不连接catalog:
C:\Documents and Settings\wangxiaoqi>rman target / nocatalog
Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: DODO (DBID=472976704)
using target database controlfile instead of recovery catalog
6、注册数据库:
在RMAN中有恢复目录的情况下,连接目标数据后还需要注册数据库
即将目标数据库中的控制文件转到恢复目录中
同一个恢复目录中只能注册一个目标数据库。
RMAN> register database;
database registered in recovery catalog
starting full resync of recovery catalog
full resync complete
7、使用log方式登录:
首先创建一个用于记录log信息的文件
然后在登录时使用:
C:\Documents and Settings\wangxiaoqi>rman target / log D:\oracle\oradata\dodo\logs\rman_log.txt
RMAN>
当使用了log时,所有的信息将不在屏幕上打印,而直接存入log文件中
所以一般操作还是不要使用log,当执行一个很长的批处理时,可能需要在log文件中记录下操作信息