分类: Oracle
2010-09-09 14:29:36
1、连接到目标数据库(不用恢复目录数据库):
Rman nocatalog target
Rman catalog target
2、SHOW命令:
显示rman配置: RMAN> show all;
3、REPORT命令:
1、RMAN> report schema 报告目标数据库的物理结构;
2、RMAN>report need backup days=3; 报告最近3天没有被备份的数据文件;
3、RMAN> report need backup days 3 tablespace users; 在USERS表空间上3天未备份的数据文件;
4、RMAN> report need backup incremental 3; 报告恢复数据文件需要的增量备份个数超过3次的数据文件;
5、RMAN> report need backup redundancy 2 database; 报告备份文件低于2份的所有数据文件;
RMAN>report need backup redundancy=2;
6、RMAN> report need backup recovery window of 6 days; 报告文件报表的恢复需要超过6天的归档日志的数据文件;
7、RMAN> report unrecoverable; 报告数据库所有不可恢复的数据文件;
8、RMAN> report obsolete redunndancy 2; 报告备份次数超过2次的陈旧备份;
9、RMAN>report obsolete; 报告丢弃的备份;
4、LIST命令:列出备份信息
1、列出数据文件备份集
RMAN> list backup 列出详细备份;
RMAN> list expired backup 列出过期备份;
RMAN> list backup of database; 列出所有数据文件的备份集;
RMAN> list backup of tablespace user01; 列出特定表空间的所有数据文件备份集;
2、RMAN> list backup of controlfile 列出控制文件备份集;
3、RMAN> list backup of archivelog all 列出归档日志备份集详细信息;
RMAN>list archivelog all; 列出归档日志备份集简要信息
4、RMAN> list backup of spfile 列出SPFILE备份集;
5、RMAN> list copy of datafile 5 列出数据文件映像副本;
6、RMAN> list copy of controlfile 列出控制文件映像副本;
7、RMAN> list copy of archivelog all 列出归档日志映像副本;
8、RMAN> list incarnation of database 列出对应物/列出数据库副本;
9、RMAN>list backup summary; 概述可用的备份;
B表示backup
F表示FULL
A表示archive log
0 1表示incremental backup
S说明备份状态(A AVAILABLE X EXPIRED )
10、RMAN>list backup by file 按备份类型列出备份;
按照数据文件备份,归档日志备份,控制文件备份,服务器参数文件备份 列出
5、CROSSCHECK命令:校验备份信息
1、RMAN> crosscheck backup 核对所有备份集;
2、RMAN> crosscheck backup of database 核对所有数据文件的备份集;
3、RMAN> crosscheck backup of tablespace users 核对特定表空间的备份集;
4、RMAN> crosscheck backup of datafile 4 核对特定数据文件的备份集;
5、RMAN> crosscheck backup of controlfile 核对控制文件的备份集;
6、RMAN> crosscheck backup of spfile 核对SPFILE的备份集;
7、RMAN> crosscheck backup of archivelog sequence 3 核对归档日志的备份集;
8、RMAN> crosscheck copy 核对所有映像副本;
9、RMAN> crosscheck copy of database 核对所有数据文件的映像副本;
10、RMAN> crosscheck copy of tablespace users 核对特定表空间的映像副本;
11、RMAN> crosscheck copy of datafile 6 核对特定数据文件的映像副本;
12、RMAN> crosscheck copy of archivelog sequence 4 核对归档日志的映像副本;
13、RMAN> crosscheck copy of controlfile 核对控制文件的映像副本;
14、RMAN> crosscheck backup tag='SAT_BACKUP';
15、RMAN> crosscheck backup completed after 'sysdate - 2'
16、RMAN> crosscheck backup completed between 'sysdate - 5' and 'sysdate -2 '
17、RMAN> crosscheck backup device type sBT;
18、RMAN> crosscheck archivelog all;
19、RMAN> crosscheck archivelog like '%ARC00012.001'
20、RMAN> crosscheck archivelog from sequence 12;
21、RMAN> crosscheck archivelog until sequence 522;
6、DELETE:删除备份
1、RMAN> delete obsolete; 删除陈旧备份;
2、RMAN> delete expired backup; 删除EXPIRED备份
3、RMAN> delete expired copy; 删除EXPIRED副本;
4、RMAN> delete backupset 19; 删除特定备份集;
5、RMAN> delete backuppiece ''d:\backup\DEMO_19.bak'' 删除特定备份片;
6、RMAN> delete backup 删除所有备份集;
7、RMAN> delete datafilecopy ''d:\backup\DEMO_19.bak'' 删除特定映像副本;
8、RMAN> delete copy 删除所有映像副本;
9、RMAN> delete archivelog all delete input;
RMAN> delete backupset 22 format = ''d:\backup\%u.bak'' delete input
在备份后删除输入对象;
10、RMAN> delete backupset id;
7、CHANGE命令:改变备份集的状态
1、RMAN> change backupset 22 unavailable 改变备份集状态;
2、RMAN> change datafilecopy ''d:\backup\demo_37.bak'' unavailable 改变映像副本状态;
3、RMAN> change backupset 156 keep forever logs 使备份集156永久保留;
4、RMAN> change backupset 198 keep until ''sysdate+60'' logs 使备份集198保留60天;
5、RMAN> change backupset 156 nokeep 免除备份集156的保留期限;
6、change backupset 117,118 delete;
7、change backuppiece 1304 delete;
8、change archivelog until logseq =544 delete;
8、CONFIGURE命令
1显示当前的配置信息
1.01 RMAN> show all;
1.02查询RMAN设置中非默认值:
SQL> select name,value from v$rman_configuration;
2.常用的configure选项
2.01保存策略(retention policy)
configure retention policy to recovery window of 3 days;
configure retention policy to redundancy 3;
configure retention policy clear;
2.02备份优化backup optimization
configure backup optimization on;
configure backup optimization off;
configure backup optimization clear;
2.03默认设备default device type
configure default device type to disk;
configure default device type to stb;
configure default device type clear;
2.04控制文件controlfile
configure controlfile autobackup on;
configure controlfile autobackup format for device type disk to '/cfs01/backup/conf/conf_%F';
configure controlfile autobackup clear;
configrue controlfile autobackup format for device type disk clear;
configrue snapshot controlfile name to '/cfs01/backup/snapcf/scontrofile.snp';
configrue snapshot controlfile name clear;
2.05并行数(通道数) device type disk|stb parallelism n;
configure device type disk|stb parallelism 2;
configure device type disk|stb clear;
configure channel device type disk format 'e/:rmanback_%U';
configure channel device type disk maxpiecesize 100m
configure channel device type disk rate 1200K
configure channel 1 device type disk format 'e/:rmanback_%U';
configure channel 1 device type disk maxpiecesize 100m
2.06生成备份副本datafile|archivelog backup copies
configure datafile backup copies for device type disk|stb to 3;
configure archivelog backup copies for device type disk|stb to 3;
configure datafile|archivelog backup copies for device type disk|stb clear
backup device type disk database
format '/disk1/backup/%U', '/disk2/backup/%U', '/disk3/backup/%U';
2.07排除选项exclude
configure exclude for tablespace 'users';
configrue exclude clear;
2.08备份集大小maxsetsize
configure maxsetsize to 1G|1000M|1000000K|unlimited;
configure maxsetsize clear;
2.09其它选项auxiliary
CONFIGURE AUXNAME FOR DATAFILE 1 TO '/oracle/auxfiles/aux_1.f';
CONFIGURE AUXNAME FOR DATAFILE 2 TO '/oracle/auxfiles/aux_2.f';
CONFIGURE AUXNAME FOR DATAFILE 3 TO '/oracle/auxfiles/aux_3.f';
CONFIGURE AUXNAME FOR DATAFILE 4 TO '/oracle/auxfiles/aux_4.f';
CONFIGURE AUXNAME FOR DATAFILE 1 CLEAR;
9、CATALOG命令 用于追加备份记录到RMAN资料库中。
1、RMAN> catalog datafilecopy ''d:\backup\user01.bak'';
RMAN>catalog controlfile ''d:\backup\demo.ctl'';
RMAN> catalog archivelog ''d:\backup\demo_25.bak'';
注册副本;
2、RMAN> catalog backuppiece ''d:\backup\demo_40.dbf'' 注册备份片;
3、RMAN> catalog start with ''d:\bak'' 注册特定目录的所有备份文件;
4、RMAN> change datafilecopy ''d:\bak\user01.bak'' uncatalog;
RMAN> change controlfilecopy ''d:\bak\demo.ctl'' uncatalog;
RMAN> change backuppiece ''d:\bak\demo_25.bak'' uncatalog;
注销备份记录
10、FORMAT字符串替代变量:
使用FORMAT参数时可使用的各种替换变量,如下:
%d:数据库名称;
%D:位于该月中的天数(DD);
%M:位于该年中的月份(MM);
%F:一个基于DBID唯一的名称,这个格式的形式为c-IIIIIIIIII-YYYYMMDD-QQ,其中IIIIIIIIII为该数据库的DBID,
YYYYMMDD为日期,QQ是一个1-256的序列;
%n:数据库名称,并且会在右侧用x字符进行填充,使其保持长度为8;
%u:是一个由备份集编号和建立时间压缩后组成的8字符名称。利用%u可以为每个备份集生成一个唯一的名称;
%p:表示备份集中备份片段的编号,从1开始编号;
%c:备份片的拷贝数(从1开始编号);
%U:是%u_%p_%c的简写形式,利用它可以为每一个备份片段(即磁盘文件)生成一个唯一名称,
这是最常用的命名方式;
%s:备份集的号;
%t:备份集时间戳;
%T:年月日格式(YYYYMMDD);s
注:如果在BACKUP命令中没有指定FORMAT选项,则RMAN默认使用%U为备份片段命名。
11、validate命令
1、validate命令验证备份集片是否能够被还原;
2、list backup summary;得到了备份集得主键ID如40,然后validate backupset 40;
12、恢复目录的记录删除
1. $Oracle_HOME/rdbms/admin/prgrmanc.sql脚本定期删除恢复目录中具有DELETED状态的记录
2.要删除旧的对应物记录incarnation.必须从DBINC表中删除这些对应物,
使用RC_DATABASE_INCARNATION视图来确定要删除的对应物。记录要删除的每个对应物的DBINC_KEY,
随后启动SQL*Plus,执行delete from dbinc where dbinc_key=2;
13、手工同步恢复目录:resync catalog;
14、在RMAN中存储脚本
1,连接到目标数据库和恢复目录
2,创建脚本
RMAN>create script. my_bk_script
2>{backup database plus archivelog;}
3,打印脚本
RMAN>print script. my_bk_script;
4,运行这个脚本,备份目标数据库
RMAN>run {execute scipt my_bk_script;}
5删除脚本
RMAN>delete script. my_bk_script;
15、archivelog模式下的完全恢复
step1:set oracle_sid=testdb
rman target rman_user/password
configure controlfile autobackup on;
step2:backup database plus archivelog delete input;
step3:shutdown immediate;
step4:重命名所有的数据文件和控制文件,不重命名联机重做日志。
step5: startup nomount;
set DBID=****
restore controlfile from autobackup;
alter database mount;
step6: restore database;
recover database;
alter database open resetlogs;
16、表空间恢复
sql"alter tablespace users offline";
sql"alter tablespace tools offline";
restore tablespace users,tools;
recover tablespace users,tools;
sql"alter tablespace users online";
sql"alter tablespace tools online";
17、数据文件恢复
sql"alter database datafile 3 offline";
sql"alter database datafile 'd:oracleoradatausers01.dbf' offline";
restore datafile 3
restore datafile 'd:oracleoradatausers01.dbf';
recover datafile 3
recover datafile 'd:oracleoradatausers01.dbf';
sql"alter database datafile 3 online";
sql"alter database datafile 'd:oracleoradatausers01.dbf'online";
18、RMAN高级恢复
1基于时间点的恢复
run
{
set until time "to_date('07/01/02 15:00:00','mm/dd/yy hh24:mi:ss')"
restore database;
recover database;
alter database open resetlogs;
}
2基于SCN的恢复
startup mount;
restore database UNTIL SCN 10000;
recover database UNTIL SCN 10000;
alter database open resetlogs;
3基于日志序列的恢复
startup mount;
restore database UNTIL SEQUENCE 100 thread 1;
recover database UNTIL SEQUENCE 100 thread 1;
alter database open resetlogs;