MOUNT状态下，无法通过DBA_TABLESPACES来查看表空间的信息，但可通过视图v$tablespace查看表空间的信息。

 

SQL> select status from v$instance;

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

 

SQL> select * from DBA_TABLESPACES;
select * from DBA_TABLESPACES
              *
第 1 行出现错误:
ORA-01219: 数据库未打开: 仅允许在固定表/视图中查询

 

 

SQL> select * from v$tablespace;

       TS# NAME                           INC BIG FLA ENC
---------- ------------------------------ --- --- --- ---
         0 SYSTEM                         YES NO  YES
         1 UNDOTBS1                       YES NO  YES
         2 SYSAUX                         YES NO  YES
         4 USERS                          YES NO  YES
         3 TEMP                           NO  NO  YES
         6 EXAMPLE                        YES NO  YES
         7 OCP10GDATA                     YES NO  YES

已选择7行。