将Oracle数据库数据每天备份恢复一次数据到另一台服务器上两份数据

1、创建用户，授权，创建测试数据

创建用户
CREATE USER test  identified by 123;
授权
grant dba to test;
创建测试数据
create table a(id int);
insert into a select 1 from dual connect by level<=50;

2、创建备份目录

create directory UserName_dir as '/home/oracle/oradb';
grant read,write on directory UserName_dir to test;

3、导出数据并获取当日时间并推送到另一台服务器上

排除需要导出的表：exclude=table:"in('SZSY','JBXX_H','MENT')"，表名必须大写

[oracle@server80 script]$ cat ora_exp_backup.sh
#!/bin/bash

datadir=/home/oracle/oradb
mydmp=/home/oracle/oradb/exp_test_$(date +%Y%m%d).dmp

if [ -f "$mydmp" ];then
    rm -rf $mydmp
fi

cat << EOF > /home/oracle/script/exp_test.par
dumpfile=exp_test_$(date +%Y%m%d).dmp
logfile=exp_test_$(date +%Y%m%d).log
directory=UserName_dir
SCHEMAS=TEST
EOF

expdp \' / as sysdba \' parfile=/home/oracle/script/exp_test.par


#获取备份日志关键字“sucessfully”
ora_backup_info=$(cat /home/oracle/oradb/exp_test_$(date +%Y%m%d).log|tail -n 1|awk '{print $3}')

if [ $ora_backup_info = 'successfully' ];then
    cd $datadir && tar -zcf exp_test_$(date +%Y%m%d).tar.gz exp_test_$(date +%Y%m%d).dmp
    rsync -avz $datadir/exp_test_$(date +%Y%m%d).tar.gz root@localhost:/home/oracle/
    if [ $? = '0' ];then
        echo "1" > /tmp/ora_backup_status.log
        rsync -avz /tmp/ora_backup_status.log root@localhost:/home/oracle/oradb
        if [ $? = '0' ];then
        cd $datadir && rm -rf exp_test_$(date +%Y%m%d)*
        fi
    else
    echo "数据备份成功，发送失败" > /tmp/ora_backup_status.log
    fi
else
    echo "数据备份失败" > /tmp/ora_backup_status.log
fi

4、校验数据并导入到新服务器数据库里上

[oracle@server80 script]$ cat ora_imp_backup.sh
#!/bin/bash

cat << EOF > /home/oracle/script/imp_text.par
dumpfile=exp_test_$(date +%Y%m%d).dmp
logfile=imp_test_$(date +%Y%m%d).log
directory=UserName_dir
remap_schema=test:test2
EOF

date=$(date +%Y-%m-%d)
#获取该文件的最新修改时间
ora_backup_date=$(stat /home/oracle/oradb/ora_backup_status.log|tail -n 1|awk '{print $2}')
#获取备份成功返回的状态码
ora_rsync_status=$(cat /home/oracle/oradb/ora_backup_status.log)

mytgz=/home/oracle/exp_test_$(date +%Y%m%d).tar.gz

if [ $ora_backup_date = $date ];then
    if [ $ora_rsync_status = '1' ];then
        sh /home/oracle/script/dropuser2.sh
        impdp \' / as sysdba \' parfile=/home/oracle/script/imp_text.par
        if [ $? = '0' ];then
            #数据导入成功
            echo "1" >/tmp/ora_imp2_status.log 
            cd /home/oracle/oradb/ && rm -rf exp_test_$(date +%Y%m%d)*
        else
            echo "是最新数据,数据导入失败" >/tmp/ora_imp2_status.log
        fi
    else
        echo "不是最新数据,失败" >/tmp/ora_imp_status2.log
    fi
else
    sleep 30
    if [ $ora_rsync_status = '1' ] && [ $ora_backup_date = $date ];then
        sh /home/oracle/script/dropuser2.sh
        impdp \' / as sysdba \' parfile=/home/oracle/script/imp_text.par
        if [ $? = '0' ];then
            #数据导入成功
            echo "1" >/tmp/ora_imp_status2.log
            cd /home/oracle/oradb/ && rm -rf exp_test_$(date +%Y%m%d)*
        else
            echo "是最新数据,数据导入失败" >/tmp/ora_imp2_status.log
        fi
    else
        echo "两次检查，数据不是最新的，结束数据导入" >/tmp/ora_imp2_status.log
    fi
fi

5、创建删除用户脚本

　　目的：在导入数据的时候由于数据已经存在，且覆盖出错，清理用户数据重新导入即可，删除session，否则删除报错。

vim dropuser.sh

#!/bin/bash
${ORACLE_HOME}/bin/sqlplus /nolog <<EOF
connect / as sysdba
SELECT 'alter system kill session '''||sid||','||serial#||''' immediate;' FROM V\$SESSION WHERE USERNAME='TEST1';
drop user test1 cascade;
exit
EOF

6、修改一份适合第二份数据存储的数据

修改ora_imp.backup.sh,dropuser.sh 修改创建两份文件即可。第一份脚本执行完不删备份的数据，第二份脚本执行完后删除备份的数据。

7、总执行脚本如下

[oracle@server81 script]$ cat ora_imp.sh
#!/bin/bash

#判断压缩包是否存在
mytgz=/home/oracle/exp_test_$(date +%Y%m%d).tar.gz

if [ ! -f "$mytgz" ];then
    exit
else
    cd /home/oracle/ && tar xf exp_test_$(date +%Y%m%d).tar.gz -C /home/oracle/oradb/ && rm -rf exp_test_$(date +%Y%m%d).tar.gz
fi

ora_imp1=/home/oracle/script/ora_imp_backup.sh
ora_imp2=/home/oracle/script/ora_imp2_backup.sh
#循环执行导入两份数据
for i in $ora_imp1 $ora_imp2;
do
   sh $i
done

温馨提示：本文由自己记录，仅作参考，出了问题概不负责。。。。。