Oracle归档的开启和关闭

  --1、开启归档

  【步骤】

  a.一致性关闭数据库(shutdown [immediate | transactional |normal])

  b.启动到mount阶段(startup mount)

  c.切换到归档模式(alter database archivelog[manual])

  d.切换到open阶段(alter database open)

  e.对数据做一个完整备份(full backup)

  show parameter spfile

  alter system set log_archive_dest_1='location=/ggs/arch_data' scope=spfile;

  alter system set db_recovery_file_dest_size=100g scope=spfile sid='*';

  alter system set db_recovery_file_dest='/ggs/ora_recovery' scope=spfile;

  alter system set log_archive_format='arch_%t_%s_%r.arc' scope=spfile;

  shutdown immediate;

  startup mount;

  alter database archivelog;

  alter database open ;

  archive log list;

  --2、关闭归档

  【步骤】归档模式切换到非归档模式

  a. [immediate | transactional |normal])一致性关闭数据库(shutdown

  b.启动到mount阶段(startup mount)

  c.切换到归档模式(alter database noarchivelog)

  d.切换到open阶段(alter database open)

  关闭归档模式:

  shutdown immediate;

  startup mount;

  alter database noarchivelog;

  alter database open;

  查看归档文件:

  select * from v$log;

  select * from v$logfile;

  select * from v$flash_recovery_area_usage;

  report obsolete;

  delete obsolete;

  备份归档文件:

  backup archivelog all;

  也可以:

  先执行alter system switch logfile;

  再找到归档日志位置,复制到别的地方即可。

  rman target /

  delete archivelog all completed before 'sysdate-7';

  backup first

  backup format '/tmp/arch-%t_%s_%u' archivelog all delete input;

  或者backup database plus archivelog;

  删除归档文件:

  rman target / 或者 rman target user/password@tns

  list archivelog all;

  crosscheck archivelog all;

  list expired archivelog all;

  delete expired archivelog all;(编辑:雷林鹏 来源:网络)

posted @ 2018-08-28 11:14  雷林鹏  阅读(6201)  评论(0编辑  收藏  举报