启动oracle数据库到只读模式
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启动数据库到mount状态

ora_test@oracle[/home/oracle]> sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Sun Mar 7 17:27:26 2010

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to an idle instance.

idle> startup mount;
ORACLE instance started.

Total System Global Area 209715200 bytes
Fixed Size 1218532 bytes
Variable Size 113248284 bytes
Database Buffers 88080384 bytes
Redo Buffers 7168000 bytes
Database mounted.


启动数据库到只读模式

idle> alter database open read only;

Database altered.

idle> select open_mode from v$database;

OPEN_MODE
----------
READ ONLY

idle>

--end--