Oracle__日志
Oracle日志基本信息
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1.查询系统使用的是哪一组日志文件：select * from v$log;2.查询正在使用的组所对应的日志文件：select * from v$logfile;3.强制日志切换：alter system switch logfile;4.查询历史日志：select * from v$log_history;5.查询日志的归档模式：select dbid,name,created,log_mode from v$database;6.查询归档日志的信息：select recid,stamp,thread#,sequence#,name from v$archived_log;7.增加与删除日志文件组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.增加与删除日志成员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.日志文件移动alter database rename file '/home1/oracle/oradata/ora8i/log1a.log' to '/home2/oracle/oradata/ora8i/log1a.log';执行该命令之前必须保证该日志文件物理上已经移动到新目录10.清除日志文件alter database clear logfile '/home1/oracle/oradata/ora8i/log1a.log';该命令不能用删除组及组成员命令删除日志时使用