What's mean ORA-25191?

1.在给表授权的时候.报错ORA-25191

检查该表为IOT 表 .

--因为不是按照单表方式授予权限，而是按照用户的方式授予权限,所以该表的父亲表都在该用户下，所以这个报错可以忽略。

在参考了Using DBMS_SYS_SQL Package to grant Privilege留言板里有朋友继续问道,出现了以下错误:

ORA-25191: cannot reference overflow table of an index-organized table

ORA-06512: at "SYS.DBMS_SYS_SQL", line 1474

ORA-06512: at line 9

查一下Oracle手册，我们看到:

ORA-25191 cannot reference overflow table of an index-organized table

Cause: An attempt was made to directly access the overflow table of an index-organized table.

Action: Issue the statement against the parent index-organized table containing the specified overflow table.

意思是说，对于Overflow的IOT表，只需要对父表进行授权即可。简单动手自己试试看也可以:

SQL> connect eygle/eygle

Connected.

SQL> CREATE TABLE TEST_IOT

  2        (id NUMBER PRIMARY KEY,

  3         C1 VARCHAR2(50),

  4         C2 VARCHAR2(10))

  5        ORGANIZATION INDEX PCTTHRESHOLD  10 OVERFLOW;

Table created.

SQL> col object_name for a30

SQL> select object_name,object_type from user_objects where object_name like '%IOT%';

OBJECT_NAME                    OBJECT_TYPE

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

SYS_IOT_OVER_7370              TABLE

SYS_IOT_TOP_7370               INDEX

TEST_IOT                       TABLE

SQL> grant select on SYS_IOT_OVER_7370 to scott;

grant select on SYS_IOT_OVER_7370 to scott

                *

ERROR at line 1:

ORA-25191: cannot reference overflow table of an index-organized table

SQL>

巴特西

What's mean ORA-25191?

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