查看Oracle数据库实例启动状态

SQL> conn / as sysdba
已连接到空闲例程。
SQL> startup nomount
ORACLE 例程已经启动。
 
Total System Global Area  534462464 bytes
Fixed Size                  2177456 bytes
Variable Size             394266192 bytes
Database Buffers          130023424 bytes
Redo Buffers                7995392 bytes
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>