Linux下的Oracle按周7个文件覆盖备份
需要设计一个对ORACLE的备份方案,由于数据库较大,不适合每天存量备份,所以设计了这种按周7个文件的覆盖备份
今天因为工作上的关系,需要设计一个对Oracle的备份方案,由于数据库较大,不适合每天存量备份,所以设计了这种按周7个文件的覆盖备份,,具体步骤如下:
1.创建SHELL执行脚本oracle_backup.sh
[root@czjie ~]# vi /data/oracle/orabak/oracle_backup.sh
语句如下:
#!/bin/bash
export ORACLE_BASE=/opt/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/10.2.0/db_1
export ORACLE_SID=orcl
export PATH=$ORACLE_HOME/bin:$PATH
export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK
#生成备份文件名,最后一位数字(0-6)对应(星期天-星期六)
a=czjie_bak_week$(date +%w)
echo $a
exp czjie/czjie_2012 file=/data/oracle/orabak/$a.dmp log=/data/oracle/orabak/$a.log
注意:export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK,这一行如果没有,那么当exp工具所在的环境变量跟NLS LANG中的NLS_CHARCATERSET不一致时,就会导致EXP-00091 Exporting questionable statistics,如果不知道怎么获取NLS_CHARCATERSET,可参考我的文章:EXP-00091 Exporting questionable statistics
a=czjie_bak_week$(date +%w) 中 $(date +%w) 获取的是周几,按星期天为0的顺序一直到星期六的6,测试时候可以用$(date +%w -d "1 days ago")方法进行天数上的调整;
2.授予SHELL脚本可执行权限及其用户归属
[root@czjie ~]# cd /data/oracle/orabak
[root@czjie orabak]# chmod 700 backup.sh
[root@czjie orabak]# chown oracle backup.sh
3.确保备份的文件目录归属于oracle用户
[root@czjie ~]# chown –R oracle.oinstall /data/oracle/orabak/

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