alter database操作

1 alter database：修改資料檔案

alter database datafile 4 offline;

alter database datafile '/opt/oracle/datafile/users01.dbf' offline;

alter database datafile '/opt/oracle/datafile/users01.dbf' resize 100M;

alter database datafile '/opt/oracle/datafile/users01.dbf' autoextend on next 100M maxsize 1000M;

alter database datafile 4 end backup;

2 alter database：修改臨時檔案（tempfile）

alter database tempfile 4 resize 100M;

alter database tempfile 4 autoextend on next 100M maxsize 1000M;

alter database tempfile 4 drop including datafiles;

alter database tempfile 4 offline;

3 alter database：歸檔日誌（archivelog）模式命令

alter database archivelog;

alter database noarchivelog;

alter database force logging;

alter database clear logfile '/opt/oracle/logfiles/redo01.rdo';

alter database clear unarchived logfile '/opt/oracle/logfiles/redo01.rdo';

alter database add supplemental log data;

alter database add supplemental log data (primary key,unique);

alter database drop supplemental log data;

4 alter database：控制檔案操作

alter database backup controlfile to trace;

alter database backup controlfile to trace as '/opt/oracle/logfile_backup/backup_logfile.trc' reuse resetlogs;

alter database backup controlfile to '/opt/oracle/logfile_backup/backup_logfile.ctl';

5 alter database：建立資料檔案

alter database create datafile '/opt/oracle/datafile/users01.dbf' as '/opt/oracle/datafile/users01.dbf';

alter database create datafile 4 as '/opt/oracle/datafile/users01.dbf';

alter database create datafile '/opt/oracle/datafile/users01.dbf' as new;

6 alter database：記錄檔命令

alter database add logfile group 2 ('/opt/oracle/logfiles/redo02a.rdo','/opt/oracle/logfile/redo02b.rdo') size 300M reuse;

alter database add logfile member '/opt/oracle/logfiles/redo02c.rdo' to gourp 2

alter database add logfile thread 3 group 2 ('/opt/oracle/logfiles/redo02a.rdo','/opt/oracle/logfiles/redo02b.rdo') size 300M reuse;

alter database drop logfile group 3

alter database drop logfile member '/opt/oracle/logfiles/redo02b.rdo';

7 alter database：安裝和開啟資料庫

alter database mount;

alter database open;

8 alter database：移動或重新命名資料庫檔案或聯機重做日誌

注意：資料庫必須已經安裝才能重新命名或移動聯機重做日誌。資料庫必須已經安裝或資料檔案處於離線狀態時，才能移動資料庫中的資料檔案。

alter database rename file '/ora/datafile/oldfile.dbf' to '/ora/datafile/newfile.dbf';

9 alter database：以唯讀方式開啟資料庫

alter database open read only;

10 alter database：使用resetlogs開啟資料

alter database open resetlogs;

11 alter database：恢複資料庫

對資料庫的恢複，建議使用recover命令代替。