Oracle日誌文件的管理與查看

--Oracle日誌文件管理與查看  
 select * from v$sql   (#查看最近所做的操做)
 --select * fromv $sqlarea(#查看最近所做的操做)

   
  -- 1.查詢系統使用的是哪一組日誌文件:
 select * from v$log;

 -- 2.查詢正在使用的組所對應的日誌文件:
  select * from v$logfile;

  --3.強制日誌切換:
  alter system switch logfile;

   --4.查詢歷史日誌:
  select * from v$log_history;

  --5.查詢日誌的歸檔模式:
   elect dbid,name,created,log_mode from v$database;

  --6.查詢歸檔日誌的信息:
 select recid,stamp,thread#,sequence#,name from v$archived_log;

  --7.增長與刪除日誌文件組
 alter database add logfile group 1 ('/home1/oracle/oradata/ora8i/log1a.log'),'/home2/oracle/oradata/ora8i/log1b.log') size 100M;
 alter database drop logfile group 1;

  --8.增長與刪除日誌成員
 alter database add logfile member '/home1/oracle/oradata/ora8i/log1a.log' to group 1,'/home1/oracle/oradata/ora8i/log2a.log' to group 2;
 alter database drop logfile member '/home1/oracle/oradata/ora8i/log1a.log' ;

  --9.日誌文件移動
 alter database rename file '/home1/oracle/oradata/ora8i/log1a.log' to '/home2/oracle/oradata/ora8i/log1a.log';

 
  --10.清除日誌文件
 alter database clear logfile '/home1/oracle/oradata/ora8i/log1a.log';
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