【RMAN备份与恢复之单实例】【主题:RMAN的简单的使用】一、rman备份操作:1.oracle用户登录,..
【RMAN备份与恢复之单实例】
【主题:RMAN的简单的使用】
一、rman备份操作:
1.oracle用户登录,首先确定/u02/rman目录是否存在
2.使用sys用户,密码oracle 登录rman
rman target sys/oracle
run{
CROSSCHECK ARCHIVELOG ALL;
ALLOCATE CHANNEL CH1 DEVICE TYPE DISK FORMAT '/u02/rman/test_%U' ;
ALLOCATE CHANNEL CH2 DEVICE TYPE DISK FORMAT '/u02/rman/test_%U';
BACKUP incremental level 0 DATABASE plus archivelog delete input;
RELEASE CHANNEL CH1;
RELEASE CHANNEL CH2;
}
RMAN>list backupset;
//备份完毕,一定要记录scn。
(备份时记录备份完成的SCN号,美国服务器,此SCN号作为数据库恢复的时间点,香港服务器租用,必须记录下来)
#SCN号类似如下:
--------------------------------------------------------------------------
二、rman 首次恢复操作
1、ORACLE用户登录
2、首次进行恢复
使用sys用户登录rman
rman target sys/oracle
shutdown immediate;
startup mount;
run{
set until scn 277970;
ALLOCATE CHANNEL CH1 DEVICE TYPE DISK FORMAT '/u02/rman/test_%U';
ALLOCATE CHANNEL CH2 DEVICE TYPE DISK FORMAT '/u02/rman/test_%U';
restore database;
recover database;
sql 'alter database open resetlogs';
RELEASE CHANNEL CH1;
RELEASE CHANNEL CH2;
}
三、rman 多次恢复操作
在使用备份文件恢复数据库,用open resetlogs方式打开数据之后,
如果需要再次恢复数据库,需要指定数据库的incarnation.
1、ORACLE用户登录
2、进行恢复
使用sys用户登录rman
rman target sys/oracle
shutdown immediate ;
startup mount;
list incarnation;
reset database to incarnation 1;
run{
set until scn 1;
ALLOCATE CHANNEL CH1 DEVICE TYPE DISK FORMAT '/u02/rman/test_%U';
ALLOCATE CHANNEL CH2 DEVICE TYPE DISK FORMAT '/u02/rman/test_%U';
restore database;
recover database;
sql 'alter database open resetlogs';
RELEASE CHANNEL CH1;
RELEASE CHANNEL CH2;
}
---------------------------------------------------------
【RMAN备份与恢复之一】 Oracle 11gR2 单实例 + asm for RMAN
【RMAN备份与恢复之二】 Oracle 11gR2 RAC + asm for RMAN
【RMAN备份与恢复之三】 Oracle 11gR2 + asm for RMAN 命令应用
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本文出自 “寒枫” 博客,香港虚拟主机,请务必保留此出处

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