1.添加日誌組
alter database add logfile group 4 ('/u01/app/oracle/oradata/oracl/redo04.log') size 50m;
2.添加日誌組(指定日誌已經存在)
alter database add logfile group 4 ('/u01/app/oracle/oradata/oracl/redo04.log') size 50m reuse;
3.添加日誌成員
alter database add logfile member '/u01/app/oracle/oradata/oracl/redo0401.log' to group 4;
4.添加日誌成員(指定日誌已經存在)
alter database add logfile member '/u01/app/oracle/oradata/oracl/redo0401.log' reuse to group 4;
5.刪除日誌組
alter database drop logfile group 4;
6.刪除日誌成員
alter database drop logfile member '/u01/app/oracle/oradata/oracl/redo0401.log';
7.如果要給日誌組文件換一個位置,則需要依照下面步驟執行
(1)shutdown database
(2) copy the online redo log files to the new location;
(3) start database to mount;
(4)execute the command
alter database rename file '/u01/app/oracle/oradata/oracl/redo0401.log' to '/u02/app/oracle/oradata/oracl/redo0401.log';
(5)open database
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