DG环境数据库RMAN备份策略制定

时间：2021-05-30 11:38:33

DG环境数据库RMAN备份策略制定:

主库(Primary)

备库(Standby)

引用说明

主库(Primary)

$ crontab -l
```
0 1 * * * /bin/bash /usr2/backupsh/full_backup.rman
0 */2 * * * /bin/bash /usr2/backupsh/arch_backup.rman
0 3 * * * /bin/bash /usr2/backupsh/del_old.sh
```

全库备份

more /usr2/backupsh/full_backup.rman
```
#!/bin/bash
#Make sure your bkdir and change it!
bkdir=/usr2/BACKUP
foldername=`date +%Y%m%d`
mkdir -p $bkdir
cd $bkdir
if [ -d $foldername ]
then
echo 'go on'
else
echo 'need mkdir'
mkdir $foldername
fi

oracle environment

export ORACLE_SID=jyzhao

export ORACLE_BASE=/opt/app/oracle

export ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1

export PATH=$PATH:$ORACLE_HOME/bin:$HOME/bin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib

export NLS_LANG="simplified chinese_china.ZHS16GBK"

export NLS_DATE_FORMAT="YYYY-MM-DD HH24:Mi:SS"

rman target / log=$bkdir/$foldername/LOG_full_$foldername.log <<EOF

run{

configure retention policy to recovery window of 5 days;

configure controlfile autobackup on;

configure controlfile autobackup format for device type disk to '$bkdir/$foldername/controlfile%F';

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

allocate channel c1 device type disk;

allocate channel c2 device type disk;

allocate channel c3 device type disk;

allocate channel c4 device type disk;

backup database skip inaccessible

backup incremental level=0 database

format '$bkdir/$foldername/full_BACK_%U';

release channel c1;

release channel c2;

release channel c3;

release channel c4;

}

allocate channel for maintenance device type disk;

crosscheck backupset;

delete noprompt expired backupset;

delete noprompt obsolete;

exit

EOF

<h2 id='1.2'> 归档备份 </h2>

more /usr2/backupsh/arch_backup.rman

!/bin/bash

Make sure your bkdir and change it!

bkdir=/usr2/BACKUP

foldername=date +%Y%m%d

mkdir -p $bkdir

cd $bkdir

if [ -d $foldername ]

then

echo 'go on'

else

echo 'need mkdir'

mkdir $foldername

fi

oracle environment

export ORACLE_SID=jyzhao

export ORACLE_BASE=/opt/app/oracle

export ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1

export PATH=$PATH:$ORACLE_HOME/bin:$HOME/bin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib

export NLS_LANG="simplified chinese_china.ZHS16GBK"

export NLS_DATE_FORMAT="YYYY-MM-DD HH24:Mi:SS"

rman target / log=$bkdir/$foldername/LOG_arch_$foldername.log append <<EOF

run{

configure retention policy to recovery window of 5 days;

configure controlfile autobackup on;

configure controlfile autobackup format for device type disk to '$bkdir/$foldername/controlfile%F';

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

allocate channel c1 device type disk;

allocate channel c2 device type disk;

allocate channel c3 device type disk;

allocate channel c4 device type disk;

backup database skip inaccessible

backup archivelog all delete input

format '$bkdir/$foldername/arch_BACK_%U';

release channel c1;

release channel c2;

release channel c3;

release channel c4;

}

allocate channel for maintenance device type disk;

crosscheck backupset;

delete noprompt expired backupset;

delete noprompt obsolete;

exit

EOF



<h2 id='1.3'> 删除历史文件夹 </h2>

more /usr2/backupsh/del_old.sh

!/bin/bash

del old folders

Make sure your bkdir and change it!

bkdir=/usr2/BACKUP

cd $bkdir && find . -mtime +7 | xargs rm -rf

<h1 id='2'> 备库(Standby) </h1>

$ crontab -l

0 3 * * * /usr2/del_arch/del_arch.sh

<h2 id='2.1'> 删除归档 </h2>

more /usr2/del_arch/del_arch.sh

!/bin/bash

export ORACLE_SID=jyzhao_s

export ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1

export ARCHIVE_DIR=/usr2/oradata/archivelog

export LOG_FILE=/usr2/oradata/archivelog/del_archive.log

echo "开始删除归档日志：date……">>$LOG_FILE

if [ whoami != 'oracle' ]

then

echo "Error: You must be oracle to execute.">>$LOG_FILE

exit 99

fi

del_seq=ls -rt $ARCHIVE_DIR/ |grep -v JYZHAO_S| head -1|cut -f4 -d_|cut -f1 -d.

$ORACLE_HOME/bin/sqlplus -silent "/ as sysdba" <tmp.log

set pagesize 0 feedback off verify off heading off echo off

select max(sequence#) from v$ARCHIVED_LOG where APPLIED='YES';

exit;

XFF

max_sn=cat tmp.log

rm tmp.log

max_sn=$(( $max_sn - 20 ))

我这里是保留最近的20个归档文件，这个具体情况自己决定

while [[ ${del_seq} -lt ${max_sn} ]]

do

echo "${ARCHIVE_DIR}/arch_874084675_1_${del_seq}.arc">>$LOG_FILE

rm ${ARCHIVE_DIR}/arch_874084675_1_${del_seq}.arc

这里是我定义归档文件的格式，具体根据自己的归档文件格式来匹配，关键是匹配日志的sequence no。

del_seq=$(( $del_seq + 1 ))

done

echo "删除归档日志结束：date……">>$LOG_FILE

清楚controlfile中信息

$ORACLE_HOME/bin/rman target / <>$LOG_FILE

crosscheck archivelog all;

delete expired archivelog all;

YES

exit;

XIFENFEI

echo "………………………………………………………………………………………………………………………">>$LOG_FILE



<h1 id='3'> 引用说明 </h1>

备库删除归档的脚本参考于惜分飞的博客，原地址如下：

[http://www.xifenfei.com/1144.html](http://www.xifenfei.com/1144.html)

原文说到重点是在读取现在存在的归档日志文件中sequence最小值时，

使用了`ls -tr $ARCHIVE_DIR/|grep -v stdarch | head -1|cut -f2 -d_`

而我这里就根据实际情况改成：`ls -rt $ARCHIVE_DIR/ |grep -v JYZHAO_S| head -1|cut -f4 -d_|cut -f1 -d.`

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