转 User has no SELECT privilege on V$SESSION

使用dbms_xplan.display_cursor function的时候发现如下错误。

SQL> select * from table(dbms_xplan.display_cursor);

PLAN_TABLE_OUTPUT

-------------------------------------------------------------------------

User has no SELECT privilege on V$SESSION

SQL>

然后查看官网发现这么几句话：

This package runs with the privileges of the calling user, not the package owner (SYS). The table functionDISPLAY_CURSOR requires to have select privileges on the following fixed views:V$SQL_PLAN, V$SESSION and V$SQL_PLAN_STATISTICS_ALL.

也就是说要有，v$sql_plan,v$session,v$sql_plan_statistics_all权限。

如下：

SQL> conn sys/root as sysdba

Connected.

SQL> grant select on v_$sql_plan to rhys ;

Grant succeeded.

SQL> grant select on v_$session to rhys;

Grant succeeded.

SQL> grant select on v_$sql_plan_statistics_all to rhys;

Grant succeeded.

SQL> conn rhys/amy

Connected.

SQL> select * from table(dbms_xplan.display_cursor);

PLAN_TABLE_OUTPUT

-------------------------------------------------------------------------------------------------------------------------------------------------User has no SELECT privilege on V$SESSION

SQL>

依然出错，咋回事？然后继续看联机手册，又发现了这么一句话：

To use the DISPLAY_CURSOR functionality, the calling user must haveSELECT privilege on the fixed views V$SQL_PLAN_STATISTICS_ALL,V$SQL and V$SQL_PLAN, otherwise it shows an appropriate error message.

呵呵。那么这就明了，要想使用display_cursor那么必须要有对v$sql，v$sql_plan_statistics_all,v$session,v$sql_pan这四个视图的权限。先看看rhys账户有哪些权限吧：

SQL> conn sys/root as sysdba

Connected.

SQL> grant select on v_$sql to rhys;

Grant succeeded.

SQL> conn rhys/amy

Connected.

SQL> select * from table(dbms_xplan.display_cursor);

PLAN_TABLE_OUTPUT

-------------------------------------------------------------------------------------------------------------------------------------------------

SQL_ID dyk4dprp70d74, child number 0

-------------------------------------

SELECT DECODE('A','A','1','2') FROM DUAL

Plan hash value: 1388734953

-----------------------------------------------------------------

-----------------------------------------------------------------

| 0 | SELECT STATEMENT | | | 2 (100)| |

| 1 | FAST DUAL | | 1 | 2 (0)| 00:00:01 |

-----------------------------------------------------------------

PLAN_TABLE_OUTPUT

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

13 rows selected.

SQL>