redo log的管理

1.添加日誌組
alter database add logfile group 1 ('/u02/oradata/bolan/redo01.log') size 100m;
2.添加日誌組成員
alter database add logfile member '/u02/oradata/bolan/redo01.log' to group 1;
3.刪除日誌組
alter database drop logfile group 1;
4.刪除日誌組成員
alter database drop logfile member '/u02/oradata/bolan/redo01.log';

1.添加鏡像日誌
alter database add standby logfile group 1 ('/u02/oradata/bolan/redo01.log') size 100m;
2.添加鏡像日誌組成員
alter database add standby logfile member '/u02/oradata/bolan/redo01.log' to group 1;
3.刪除鏡像日誌
alter database drop standby logfile group 1;
4.添加鏡像日誌組成員
alter database drop standby logfile member '/u02/oradata/bolan/redo01.log';