发布于 2016-03-27 00:08:30 | 325 次阅读 | 评论: 0 | 来源: 网友投递
RMan Oracle数据库备份和恢复工具
RMAN 可以用来备份和恢复数据库文件、归档日志和控制文件,也可以用来执行完全或不完全的数据库恢复。RMAN有三种不同的用户接口:COMMAND LINE方式、GUI 方式(集成在OEM 中的备份管理器)、API 方式(用于集成到第三方的备份软件中)。
一、单独备份
1、经典整库备份:backup as compressed backupset database include current controlfile plus archivelog delete all input;
2、tablespace:backup tablespace 名字;
3、数据文件:backup datafile n; (n:具体的数据文件编号select file_name,file_id,tablespace_name from dba_data_files;)
4、控制文件:backup current controlfile;或者backup database include current controlfile;
5、日志文件:backup archivelog all;或者 database plus archivelog;
6、参数文件:backup spfile;
7、全库备份脚本:
run{
allocate channel c1 type disk;
backup full tag ‘dbfull' format ‘/backup/full%u_%s_%p' database
include current controlfile;
sql ‘alter system archive log current'; #在数据库进行全备份完成之后,需要执行该条命令将当前日志归档,备份归档日志时应该包括最后生成的归档
backup filesperset 3 format ‘/backup/arch%u_%s_%p'#filesperset 3设定每个备份集里文件不超过3个
archivelog all delete input; #备份归档可选,可以单独定期备份
release channel c1;
}
二、增量备份
1、0级增量备份
run{
allocate channel c1 type disk;
backup incremental level 0 tag ‘db0' format ‘/backup/db0%u_%s_%p'database
include current controlfile; ;
sql 'alter system archive log current';#在数据库进行全备份完成之后,需要执行该条命令将当前日志归档,备份归档日志时应该包括最后生成的归档
backup filesperset 3 format ‘/backup/arch%u_%s_%p'#filesperset 3设定每个备份集里文件不超过3个
archivelog all delete input; #备份归档可选,可以单独定期备份
release channel c1;
}
2、1级备份脚本
run{
allocate channel c1 type disk;
backup incremental level 1 tag ‘db1' format ‘/backup/db1%u_%s_%p'
database skip readonly include current controlfile;
backup filesperset 3 format ‘/backup/arch%u_%s_%p'#filesperset设定每个备份集里文件不超过3个
archivelog all delete input; #备份归档可选,可以单独定期备份
release channel c1;
}