oracle redo管理

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;
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