oracle命令行查看实例名实例状态

查看实例名：

select name from v$database;

select instance_name from v$instance;

查看实例状态：

SQL> select status from v$instance;

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

SQL> alter database mount;

数据库已更改。

SQL> select status from v$instance;

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

SQL> alter database open;

数据库已更改。

SQL> select status from v$instance;

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

SQL>