rman备份方法之-增量备份

使用类型：系统负载集中在某那个时间段，如白天8小时，晚上基本很闲，所以在晚上就可以对数据进行备份

与之相对应的是全库备份：

http://blog.csdn.net/jacson_bai/article/details/39636915

1、ENV:

IP: 10.244.171.180/181

Oracle database Oracle 11.2.0.3

OS RHEL 5.5

Backup Toos:RMAN，shell,crontab

2、备份计划（增量计划）

Sunday :execute level 0 incremental back

Monday :execute level 2 incremental back

Tuesday :execute level 2 incremental back

Wednesday:execute level 1 incremental back

Thursday :execute level 2 incremental back

Friday :execute level 2 incremental back

Saturday :execute level 2 incremental back

3、在Node2规划backup 目录

--先创建保存备份脚本的目录

$mkdir -p /Data/scripts/rman/

--创建备份数据的目录

$mkdir -p /Data/rmandata/ --存放备份的数据目录

3、制定*.sql和rman_backup.sh脚本

--全备lv0级：

$cd /Data/scripts/rman/

$vi backup_lv0.sql

run{

allocate channel c1 type disk;

allocate channel c2 type disk;

allocate channel c3 type disk;

allocate channel c4 type disk;

backup incremental level 0 database

include current controlfile format ‘/Data/rmandata/backup_%T_%s_%U_%t.lv0‘

plus archivelog delete all input format ‘/Data/arch/backup_%T_%s_%p_%t.arc‘;

release channel c1;

release channel c2;

release channel c3;

release channel c4;

}

--增量备lv1级：

vi backup_lv1.sql

run{

allocate channel c1 type disk;

backup incremental level 1 database include current controlfile

format ‘/Data/rmandata/backup_%T_%s_%p.lv1‘;

release channel c1;

}

--累计备lv2级：

$vi backup_lv2.sql

run{

allocate channel c1 type disk;

backup incremental level 2 database include current controlfile

format ‘/Data/rmandata/backup_%T_%s_%p.lv2‘;

release channel c1;

}

4、编写shell脚本

--脚本要实现的功能：

1.正确判断星期

2.记录每个rman备份运行的时间

#!/bin/bash

source /home/oracle/.bash_profile

myweek=`date +%a`

mydate=`date +%Y%m%d`

mydir=/Data/

#Monday

if [ "$myweek" == "Mon" ]; then