备份策略

一个完整的rman+flashback计划

 

一、备份时间计划：

 

星期	增量备份等级
日	Level 0
一	Level 2
二	Level 2
三	Level 1
四	Level 2
五	Level 2
六	Level 2

Rman配置：

RMAN> show all;

using target database control file instead of recovery catalog

RMAN configuration parameters for database with db_unique_name TEST are:

CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 15 DAYS;

CONFIGURE BACKUP OPTIMIZATION OFF; # default

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/orarecover/backup/control/%F';

CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE CHANNEL 1 DEVICE TYPE DISK FORMAT   '/orarecover/backup/tp_%u_%s_%p';

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default

CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/db/oracle/product/11.2/dbs/snapcf_test.f'; # default

 

 

 

三个等级的备份脚本：

[oracle@localhost rman]$ cat baklevel0

run{

    crosscheck backupset of archivelog all ;

    delete  noprompt expired archivelog all;

    backup

    incremental level  0

    tag  backup_inc0

    database

    include current controlfile ;

    sql "alter system archive log current";   切换当前日志并且自动归档

    backup format='/orarecover/backup/archivelog/%d_%s.arc' archivelog all  delete all input;

    alter database backup controlfile to trace;

    }

exit;

 

 

 

[oracle@localhost ~]$ cat /var/rman/baklevel1

run{

    backup

    incremental level  1

    tag backup_inc1

    database

    include current controlfile ;

 

    }

exit;

 

 

 

[oracle@localhost ~]$ cat /var/rman/baklevel2

run{

    backup

    incremental level  2

    tag backup_inc2

    database

    include current controlfile ;

    }

exit;

 

 

 

设置计划，超过七天的归档日志删除

[root@localhost ~]# cat /etc/crontab

SHELL=/bin/bash

PATH=/sbin:/bin:/usr/sbin:/usr/bin

MAILTO=root

HOME=/

0 2 * * * find  /db/oracle/flash_recovery_area/TEST/archivelog -mtime +7 -exec rm -f {} \;

45 2  *  *    0    /home/oracle/script/rmanlevel0.sh

45 2  *  *    1   /home/oracle/script/rmanlevel2.sh

45 2  *  *    2    /home/oracle/script/rmanlevel2.sh

45 2  *  *    3    /home/oracle/script/rmanlevel1.sh

45 2  *  *    4    /home/oracle/script/rmanlevel2.sh

45 2  *  *    5    /home/oracle/script/rmanlevel2.sh

45 2  *  *    6    /home/oracle/script/rmanlevel2.sh

 

查看计划脚本：

[oracle@localhost script]$ cat rmanlevel0.sh

export  ORACLE_HOME='/db/oracle/product/11.2';

export  ORACLE_SID='test';

/db/oracle/product/11.2/bin/rman target /   cmdfile=/var/rman/baklevel0  log=/var/rman/archivelog/bakl0.log append

 

 

[oracle@localhost script]$ cat rmanlevel1.sh

export  ORACLE_HOME='/db/oracle/product/11.2';

export  ORACLE_SID='test';

/db/oracle/product/11.2/bin/rman target /   cmdfile=/var/rman/baklevel1  log=/var/rman/archivelog/bakl1.log append

 

 

 

[oracle@localhost script]$ cat rmanlevel2.sh

export  ORACLE_HOME='/db/oracle/product/11.2';

export  ORACLE_SID='test';

/db/oracle/product/11.2/bin/rman target /   cmdfile=/var/rman/baklevel2  log=/var/rman/archivelog/bakl2.log append

 

 

 

 

针对表的闪回数据归档

闪回数据归档是逻辑概念

闪回数据归档针对单个表或多个表的闪回支持，前提是闪回策略需要建立在表空间之上

让单个或多个闪回归档区对,单个或多个表空间的支持.

 

例如test1和test2我们需要他对一年的数据支持闪回，可以建立Flashback_archive_1 闪回数据归档区对其支持

Test3 只需要两天的数据闪回就可以，建立Flashback_archive_2闪回数据归档区对其支持。

 

详情可以参看,

 

 

 

所需备份文件位置：

控制文件/orarecover/backup/control/%F

rman备份位置：/orarecover/backup/tp_%u_%s_%p

归档日志：/db/oracle/flash_recovery_area/TEST/archivelog/