对ORACLE的onling redo log files的操作

--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' ;

ALTER DATABASE RENAME FILE command
– 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 ;