中小型数据库 RMAN CATALOG 备份恢复方案(二)

阿尔萨斯

浏览: 4176437 次

最近访客更多访客>>

snower_tt

iams13

u012363178

wangyy

博主相关

博客

微博

相册

留言

关于我

文章分类

社区版块

存档分类

2014-10 ( 581)
2014-09 ( 572)
2014-08 ( 545)
更多存档...

中小型数据库呈现的是数据库并发少，数据库容量小，版本功能受限以及N多单实例等特点。尽管如此，数据库的损失程度也会存在零丢失的情形。企业不愿意花太多的钱又要保证数据库的可靠稳定，可是苦煞了我这些搞DB的。接上一篇文章，中小型数据库 RMAN CATALOG 备份恢复方案(一)，我们继续来给出基于中小型数据库的恢复的脚本与其部署。

1、RMAN还原shell脚本

--下面的shell脚本用于实现数据库的自动还原，还原成功后，数据库被关闭。因为我们在Prod数据库无异常的情形下，不需要bak 的备用库open
--shell脚本做还原时调用了catalog中的全局脚本global_restore
--在脚本最尾部，我们将DB还原是否成功的状态输出到日志文件db_restore_rman.log，这样做的好处是我们可以将多个DB的还原状态集中，便于查看
$ more db_restore_rman_catalog.sh
##====================================================================
##   File name: db_restore_rman_catalog.sh
##   Usage: db_restore_rman_catalog.sh <$ORACLE_SID>
##   Desc:
##        The script uses to restore database with level 0 backupset.
##   Author: Robinson
##   Blog  : http://blog.csdn.net/robinson_0612
##====================================================================

#!/bin/bash 
# --------------------
# Define variable
# --------------------

if [ -f ~/.bash_profile ]; then
. ~/.bash_profile
fi

# --------------------------
#   Check SID
# --------------------------
if [ -z "${1}" ];then
    echo "Usage: "
    echo "      `basename $0` ORACLE_SID"
    exit 1
fi

ORACLE_SID=${1};                              export ORACLE_SID
LOG_DIR=/u02/database/${ORACLE_SID}/backup;   export RMAN_DIR
TIMESTAMP=`date +%Y%m%d%H%M`                  export TIMESTAMP
RMAN_LOG=${LOG_DIR}/${ORACLE_SID}_restore_${TIMESTAMP}.log;          export RMAN_LOG
SSH_LOG=${LOG_DIR}/${ORACLE_SID}_restore_full_${TIMESTAMP}.log;      export SSH_LOG
RETENTION=5

echo "----------------------------------------------------------------" >>${SSH_LOG}
echo "Start rman to backup at `date`."                                  >>${SSH_LOG}
echo "----------------------------------------------------------------" >>${SSH_LOG}

$ORACLE_HOME/bin/rman target / catalog rman_user/xxx@catadb log=${RMAN_LOG} <<EOF
startup nomount;
run{execute global script global_restore;}
exit;
EOF
RV=$?

cat ${RMAN_LOG}>>${SSH_LOG}
echo ""        >>${SSH_LOG}
echo "----------------------------------------------------------------" >>${SSH_LOG}
echo "MSG1: RMAN restore end at `date`."                                >>${SSH_LOG}
echo "----------------------------------------------------------------" >>${SSH_LOG}

if [ $RV -ne "0" ]; then
    echo "----------------------------------------------------------------" >>${SSH_LOG}    
    echo "MSG2: RMAN restore error at `date`."                              >>${SSH_LOG}
    echo "----------------------------------------------------------------" >>${SSH_LOG}
    RMAN_STAT='FAILED'
    mail -s "Failed RMAN restore for $ORACLE_SID on `hostname`." dba@12306.com <${SSH_LOG}
else
    echo "----------------------------------------------------------------" >>${SSH_LOG}
    echo "MSG2: No error found for RMAN restore at `date`."                 >>${SSH_LOG}
    echo "----------------------------------------------------------------" >>${SSH_LOG}
    RMAN_STAT='SUCCEED'
    rm -rf ${RMAN_LOG} 2>/dev/null
fi

echo "`date '+%F %X'` --  $0 $1 $RMAN_STAT ">> /u01/comm_scripts/db_restore_rman.log

exit

2、检测还原状态shell脚本

--我们用一个shell脚本来检测多个DB当天最终的还原状态成功与否，并将当前的所有记录输出到ck_restore.log日志
--脚本尾部发送邮件列出当天所有进行restore之后的所有状态，是一个多个DB restore 的summary report.
$ more ck_restore.sh
##====================================================================
##   File name: ck_restore.sh
##   Usage: ck_restore.sh
##   Desc:
##        The script uses to check RMAN restore log for current day
##          and send mail to DBA
##   Author: Robinson
##   Blog  : http://blog.csdn.net/robinson_0612
##====================================================================
#!/bin/bash
if [ -f ~/.bash_profile ];
then
. ~/.bash_profile
fi

REV_DIR=/u01/comm_scripts
dt=`date '+%F'`
cat /dev/null >${REV_DIR}/ck_restore.log
cat ${REV_DIR}/db_restore_rman.log | grep "${dt}" >>${REV_DIR}/ck_restore.log
total=`cat ${REV_DIR}/ck_restore.log |wc -l`
suc=`grep SUCCEED ${REV_DIR}/ck_restore.log |wc -l`
fail=`grep FAILED ${REV_DIR}/ck_restore.log |wc -l`
echo "">>ck_restore.log
echo -e "The total DB of current recovery is $total in `hostname` \n">>${REV_DIR}/ck_restore.log
echo -e "The number of succee is : ${suc} \n">>${REV_DIR}/ck_restore.log
echo -e "The number of fail is : ${fail} \n">>${REV_DIR}/ck_restore.log
mail -s "RMAN restore summary for `hostname` at `date +'%a %b %d %Y'`" dba@12306.com <${REV_DIR}/ck_restore.log

3、部署还原shell脚本到crontab

--首先将多个需要自动restore的DB封装到一个单独的文件，如下：
--最后调用ck_restore.sh 脚步检测所有DB restore状态并发送RMAN summary report邮件
$ more full_resotre_by_rman.sh
#!/bin/bash
/u01/comm_scripts/db_restore_rman_catalog.sh BC1200
/u01/comm_scripts/db_restore_rman_catalog.sh AF2630

/u01/comm_scripts/ck_restore.sh

--部署到crontab
--注，无论是备份还是恢复脚本，我们都是通过Bak server的crontab来部署以减轻Prod的压力
#Rman restore database
0 3 * * 1-6 /u01/comm_scripts/full_resotre_by_rman.sh