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  • Oracle数据库的状态查询

     

    1 状态查询

    启动状态

    SQL语句

    结果

    nomount

    select status from v$instance;

    STARTED

    select open_mode from v$database;

    ERROR at line 1:

    ORA-01507: database not mounted

    mount

    select status from v$instance;

    MOUNTED

    select open_mode from v$database;

    MOUNTED

    open

    select status from v$instance;

    OPEN

    select open_mode from v$database;

    READ WRITE 或者 READ ONLY

    2 实验过程

    SQL> startup nomount;

    ORACLE instance started.

     

    Total System Global Area  125829120 bytes

    Fixed Size                  1247684 bytes

    Variable Size              92276284 bytes

    Database Buffers           25165824 bytes

    Redo Buffers                7139328 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

    ----------

    READ WRITE

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  • 原文地址:https://www.cnblogs.com/diyunpeng/p/8051741.html
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