在Oracle里启动自动归档模式

　　$ sqlplus "/ as sysdba"

　　SQL*Plus: Release 10.1.0.3.0 - Production on Wed Apr 13 09:53:25 2005

　　Copyright (c) 1982, 2004, oracle. All rights reserved.

　　Connected to:

　　Oracle Database 10g Enterprise Edition Release 10.1.0.3.0 - 64bit Production

　　With the Partitioning and Data Mining options

　　SQL> archive log list;

　　Database log mode  No Archive Mode

　　Automatic archival Disabled

　　Archive destination      USE_DB_RECOVERY_FILE_DEST

　　Oldest online log sequence     25

　　Current log sequence     27

　　SQL> show parameter log_archive_start

　　NAME   TYPE  VALUE

　　------------------------------------ ----------- ------------------------------

　　log_archive_start  boolean     FALSE

　　SQL> shutdown immediate;

　　Database closed.

　　Database dismounted.

　　ORACLE instance shut down.

　　SQL> startup mount;

　　ORACLE instance started.

　　Total System Global Area 3204448256 bytes

　　Fixed Size      1304912 bytes

　　Variable Size 651957936 bytes

　　Database Buffers   2550136832 bytes

　　Redo Buffers    1048576 bytes

　　Database mounted.

　　SQL> alter database archivelog;

　　Database altered.

　　SQL> alter database open;

　　Database altered.

　　SQL> archive log list;

　　Database log mode  Archive Mode

　　Automatic archival Enabled

　　Archive destination      USE_DB_RECOVERY_FILE_DEST

　　Oldest online log sequence     25

　　Next log sequence to archive   27

　　Current log sequence     27

　　SQL>