Oracle 如何关闭和启动归档

   很多时候由于磁盘空间不足等原因，使我们不得不关闭掉归档。那么我们如何关闭和启动归档呢！

首先查看数据库归档状态：

oracle@oracle /home/oracle$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Fri Nov 20 18:17:06 2015
Copyright (c) 1982, 2011, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> archive log list
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            /opt/oracle/oradata/ora/archive
Oldest online log sequence     7
Next log sequence to archive   13
Current log sequence           13

归档状态是Enabled，因为安装得时候笔者一般会开启归档，所以所看到的是已开启的状态。

关闭归档：

关闭数据库：
 

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.

将数据库启动到mount状态：
  

SQL> startup mount;
ORACLE instance started.
Total System Global Area 2137886720 bytes
Fixed Size                  2230072 bytes
Variable Size            1593837768 bytes
Database Buffers          536870912 bytes
Redo Buffers                4947968 bytes
Database mounted.

关闭归档并打开数据库：
 

SQL> alter database noarchivelog;
Database altered.

SQL> alter database open;
Database altered.

SQL> archive log list
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            /opt/oracle/oradata/ora/archive
Oldest online log sequence     7
Current log sequence           13

可以看到归档状态已经Disabled 了，说明已经关闭归档了。

开启归档：

关闭数据库：
 

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.

将数据库启动到mount状态：
 

SQL> startup mount;
ORACLE instance started.
Total System Global Area 2137886720 bytes
Fixed Size                  2230072 bytes
Variable Size            1593837768 bytes
Database Buffers          536870912 bytes
Redo Buffers                4947968 bytes
Database mounted.

  
开启归档并打开数据库：
 

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            /opt/oracle/oradata/ora/archive
Oldest online log sequence     7
Next log sequence to archive   13
Current log sequence           13

归档状态已经Enabled 了，说明已经开启归档了。