Oracle11G RMAN备份和恢复笔记(二)

非catalog各种备份方式:
  全库备份
  backup database;

  增量备份:
  backup incremental level=0 database;
  backup incremental level=1 database;
  备注:level1级别备份在level0级别基础上才可以做.
 
 备份归档日志:
  backup database plus archivelog delete input;
 
    备份表空间:
        backup tablespace tbs_name;

    备份控制文件:
        backup current controlfile;
        backup database include current controlfile;
 
 备份数据文件:
     backup datafile datafile_no; 
 
RMAN典型增量备份案例
   星期天: level 0 backup
   星期一: level 2 backuplevel 0 backup
   星期二: level 2 backup
   星期三: level 1 backup
   星期四: level 2 backup
   星期五: level 2 backup
   星期六: level 2 backup
实现思路:备份脚本+crontab
bakl0.sh
  run{
     allocate channel channel0 type disk;
  backup
    incremental level 0
      format '/u01/rmanbak/inc0_%d_u_%T'
   tag db_inc0
   database;
   release channel channel0;
  }
bakl1.sh
   run{
   allocate channel channel1 type disk;
   backup
     incremental level 1
    format '/u01/rmanbak/inc1_%d_u_%T'
    tag db_inc1
    database;
    release channel channel1;
    }
bakl2.sh
   run{
   allocate channel channel2 type disk;
   backup
     incremental level 2
    format '/u01/rmanbak/inc2_%d_u_%T'
    tag db_inc2
    database;
    release channel channel2;
   }
执行脚本:
   rman target /msglog=bakl0.log cmdfile=bakl0.sh
   rman target /msglog=bakl1.log cmdfile=bakl1.sh
   rman target /msglog=bakl2.log cmdfile=bakl2.sh

添加自动执行的crontab  
crontab -e -u oracle(用户的定时计划)
45 23 * * 0 rman target /msglog=bakl0.log cmdfile=bakl0.sh
45 23 * * 1 rman target /msglog=bakl2.log cmdfile=bakl2.sh
45 23 * * 2 rman target /msglog=bakl2.log cmdfile=bakl2.sh
45 23 * * 3 rman target /msglog=bakl1.log cmdfile=bakl1.sh
45 23 * * 4 rman target /msglog=bakl2.log cmdfile=bakl2.sh
45 23 * * 5 rman target /msglog=bakl2.log cmdfile=bakl2.sh
45 23 * * 6 rman target /msglog=bakl2.log cmdfile=bakl2.sh
备注:建议指定全路径
重新启动定时任务服务
service crond restart;

备注:防止磁盘空间不足.

建议在使用rman备份注意一下两点:
1.dbid
2.配置.
  configure controlfile autobackup on;
  backup database plus archivelog delete input;
 

 例如:
   backup format '/u01/rman/bak/full_%d_%t.bk' database plus archivelog delete input;
  
  
  
  
  
  
查看备份文件的目录:
   show parameter db_recovery_file_dest;
   show parameter db_recovery_file_dest_size;
查看恢复目录使用情况:
   select * from v$flash_recovery_area_usage;
查看rman中默认的参数信息
   show all;