使用型別：系統負載集中在某那個時間段，如白天8小時，晚上基本很閒，所以在晚上就可以對資料進行備份
與之相對應的是全庫備份：
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、備份計畫（增量計畫）
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規劃backup 目錄
--先建立儲存備份指令碼的目錄
$mkdir -p /data/scripts/rman/
--建立備份資料的目錄
$mkdir -p /data/rmandata/ --存放備份的資料目錄
3、制定*.sql和rman_backup.sh指令碼
--全備lv0級：
$cd /data/scripts/rman/
$vi backup_lv0.sql
run--增量備lv1級：
vi backup_lv1.sql
run--累計備lv2級：
$vi backup_lv2.sql
run4、編寫shell指令碼
--指令碼要實現的功能：
1.正確判斷星期
2.記錄每個rman備份執行的時間
#!/bin/bash
source /home/oracle/.bash_profile
myweek=`date +%a`
mydate=`date +%y%m%d`
mydir=/data/
#monday
if [ "$myweek" == "mon" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv2.sql
fi#tuesday
if [ "$myweek" == "tue" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv2.sql
fi#wednesday
if [ "$myweek" == "wed" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv1.sql
fi#thursday
if [ "$myweek" == "thu" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv2.sql
fi#friday
if [ "$myweek" == "fri" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv2.sql
fi#saturday
if [ "$myweek" == "sat" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv2.sql
fi#sunday
if [ "$myweek" == "sun" ]; then
rman target sys/oracle msglog=$/backup_$.log cmdfile=$/scripts/rman/backup_lv0.sql
fi5、crontab指令碼指定
$crontab -e
30 20 * * * sh /data/script/rman/rman_backup.sh;
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