教你快速掌握Oracle数据库的状态查询

来源：赛迪网    作者：Alice

Oracle数据库的状态查询：

示例：

SQL> startup nomount;
ORACLE instance started.

Total System Global Area 236000356 bytes
Fixed Size 451684 bytes
Variable Size 201326592 bytes
Database Buffers 33554432 bytes
Redo Buffers 667648 bytes
SQL> select status from v$instance;

STATUS
------------
STARTED

SQL> select open_mode from v$database;
select open_mode from v$database
*
ERROR at line 1:
ORA-01507: database not mounted


SQL> alter database mount;

Database altered.

SQL> select status from v$instance;

STATUS
------------
MOUNTED

SQL> select open_mode from v$database;

OPEN_MODE
----------
MOUNTED

SQL> alter database open;

Database altered.

SQL> select status from v$instance;

STATUS
------------
OPEN

SQL> select open_mode from v$database;

OPEN_MODE
----------
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