一：以归档模式运行数据库

1.shutdown immediate关闭数据库

[oracle@oracle-n1 ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 7 11:30:42 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> shutdown immediate;

2.启动数据库到mount状态

SQL> startup mount

ORACLE instance started.

Total System Global Area 1185853440 bytes

Fixed Size                  2212776 bytes

Variable Size             520096856 bytes

Database Buffers          654311424 bytes

Redo Buffers                9232384 bytes

Database mounted.

SQL>

3.启用或停止归档模式

开启归档模式

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            /data/ora11g/product/11.2.0/db_1/dbs/arch

Oldest online log sequence     97

Next log sequence to archive   99

Current log sequence           99

关闭归档模式

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup mount;

ORACLE instance started.

Total System Global Area 1185853440 bytes

Fixed Size                  2212776 bytes

Variable Size             520096856 bytes

Database Buffers          654311424 bytes

Redo Buffers                9232384 bytes

Database mounted.

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            /data/ora11g/product/11.2.0/db_1/dbs/arch

Oldest online log sequence     97

Current log sequence           99

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