1.分类

Oracle中的几类日志文件

Redo log files –>联机重做日志

Archive log files –>归档日志

Alert log files –>告警日志

Trace files –>跟踪日志

user_dump_dest –>用户跟踪日志

backupground_dump_dest –>进程跟踪日志

2.操作

查看redo组

SELECT group#,sequence#,members,bytes,status,archived FROM v$log;

查看redo组内成员的明细
select * from v$logfile
添加组

alter database add logfile group 4 ('/opt/oradata/orcl/redo04.log') size 52428800;

删除组

alter database drop logfile group 4;

添加成员
““
ALTER DATABASE ADD LOGFILE MEMBER ‘/opt/oradata/orcl/redo04a.log’ TO GROUP 4;

 警告日志

select * from v$diag_info;