DG环境数据库RMAN备份策略制定

DG环境数据库RMAN备份策略制定:
主库(Primary)

• 全库备份
  
• 归档备份
  
• 删除历史文件夹

备库(Standby)

• 删除归档

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
foldername=`date +%Y%m%d`
mkdir -p /usr2/BACKUP
cd /usr2/BACKUP
if [ -d $foldername ]
then 
        echo    'go on'
else
        echo    'need mkdir'
        mkdir $foldername
fi

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=/usr2/BACKUP/$foldername/LOG_full_$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 '/usr2/BACKUP/$foldername/controlfile%F';
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;
allocate channel c1 device type disk;
allocate channel c2 device type disk;
allocate channel c3 device type disk;
allocate channel c4 device type disk;
#backup database skip inaccessible
backup incremental level=0 database
        format '/usr2/BACKUP/$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

归档备份

more /usr2/backupsh/arch_backup.rman

#!/bin/bash
foldername=`date +%Y%m%d`
mkdir -p /usr2/BACKUP
cd /usr2/BACKUP
if [ -d $foldername ]
then 
        echo    'go on'
else
        echo    'need mkdir'
        mkdir $foldername
fi

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=/usr2/BACKUP/$foldername/LOG_arch_$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 '/usr2/BACKUP/$foldername/controlfile%F';
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;
allocate channel c1 device type disk;
allocate channel c2 device type disk;
allocate channel c3 device type disk;
allocate channel c4 device type disk;
#backup database skip inaccessible
backup archivelog all delete input
        format '/usr2/BACKUP/$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

删除历史文件夹

more /usr2/backupsh/del_old.sh

#!/bin/bash
#del old folders
cd /u01/BACKUP && find . -mtime +7 | xargs rm -rf

备库(Standby)

$ crontab -l

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

删除归档

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 -tr $ARCHIVE_DIR/|grep -v stdarch | head -1|cut -f2 -d_`
$ORACLE_HOME/bin/sqlplus -silent "/ as sysdba" <<XFF>tmp.log
set pagesize 0 feedback off verify off heading off echo off
select max(sequence#) from v\$ARCHIVED_LOG where APPLIED='YES';
exit;
XFF
max_sn=`cat tmp.log`
rm tmp.log
max_sn=$(( $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}/1_${del_seq}_830355509.dbf">>$LOG_FILE
  rm ${ARCHIVE_DIR}/1_${del_seq}_830355509.dbf
  #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
$ORACLE_HOME/bin/rman target / <<XIFENFEI>>$LOG_FILE
crosscheck archivelog all;
delete expired archivelog all;
YES
exit;
XIFENFEI
 
echo "………………………………………………………………………………………………………………………">>$LOG_FILE

引用说明

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