1.将数据库停机改为归档模式

SQL> archive log list

SQL> shutdown immediate

SQL> startup mount

SQL> alter database archivelog;

SQL> alter database open;

2.将数据库归档指向ASM

SQL>alter system set db_recovery_file_dest_size = 200G;

SQL>alter system set db_recovery_file_dest = '+DATA';

3.将数据库备份冗余设置为2，将备份文件设置为/home下的某个目录

RMAN>CONFIGURE CONTROLFILE AUTOBACKUP ON;   #设置自动备份控制文件

RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 2;

RMAN> CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT   '/home/oracle/backup/%U',   '+DATA';

设置备份在本地、存储上各有一份：

RMAN>CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2;

RMAN>CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 2;

4.制定每周全备份一次，每天备份归档或不做任何操作，只在全备份时删除冗余外的归档和备份。

使用crontab来调度脚本实现定时备份数据库，删除归档。

# crontab -l

0 0 * * 6 su - oracle backup.sh  //每周6凌晨0点全备数据库

#

# su - oracle

$ cat /home/oracle/app/oracle/product/11.2.0/dbhome_1/bin/backup.sh

rman target / cmdfile=/home/oracle/backup.rman log=/home/oracle/backup _`date +%Y%m%d%H%M%S`.log

$ cat /home/oracle/backup.rman

backup device type disk database  plus  archivelog delete all input;

allocate channel for maintenance type disk;

delete noprompt obsolete device type disk;

# crontab -l

0 0 * * * su - oracle backuparch.sh  //每天凌晨0点备份归档

0 0 * * * su - oracle dellog.sh  //每天凌晨0点处理日志,只保存7天日志

#

# su - oracle

$ cat /home/oracle/app/oracle/product/11.2.0/dbhome_1/bin/backuparch.sh

rman target / cmdfile=/home/oracle/backuparch.rman log=/home/oracle/backuparch _`date +%Y%m%d%H%M%S`.log

$ cat /home/oracle/backuparch.rman

backup archivelog all delete input;

$ cat /home/oracle/app/oracle/product/11.2.0/dbhome_1/bin/dellog.sh

find /home/oracle/backup*.log –mtime +7 –exec rm {} \;

作者 “个人记录”

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