[转]Oracle的Online Redo Log 相关操作

手动更改日志组

ALTER SYSTEM SWITCH LOGFILE;

增加日志组

ALTER DATABASE ADD LOGFILE GROUP 5 
('E:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO04.LOG')
SIZE 8M;

删除日志组

alter database drop logfile group 4 ;

添加日志组成员

ALTER DATABASE ADD LOGFILE MEMBER
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO21.LOG' TO GROUP 1,
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO22.LOG' TO GROUP 2,
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO23.LOG' TO GROUP 3;

删除日志组成员

alter database drop logfile member 
'E:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO04.LOG' ;

修改online redo log的文件名

– Shut down the database.
– Copy the online redo log files to the new location.
– Place the database in MOUNT mode.
– Execute the command.
     alter database rename file  
           'E:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO15.LOG' to 
           'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\REDO55.LOG' ;
– Open database for normal operation.
     alter database open ;