关于创建视图的问题(48天)

SQL> create view test_view as select *from customer;
create view test_view as select *from customer
                                     *
ERROR at line 1:
ORA-01031: insufficient privileges

SQL> select *from session_privs;
PRIVILEGE
----------------------------------------
CREATE SESSION
ALTER SESSION
UNLIMITED TABLESPACE
CREATE TABLE
CREATE SYNONYM
CREATE VIEW
CREATE SEQUENCE
CREATE DATABASE LINK
CREATE ROLE
CREATE PROCEDURE
CREATE TRIGGER
PRIVILEGE
----------------------------------------
CREATE MATERIALIZED VIEW
CREATE ANY DIRECTORY
DROP ANY DIRECTORY
CREATE TYPE
SELECT ANY DICTIONARY
16 rows selected.

SQL> select *from user_role_privs;
USERNAME                       GRANTED_ROLE                   ADM DEF OS_
------------------------------ ------------------------------ --- --- ---
TRUDB1                         TRUDBO1_ALL                    NO  YES NO
SQL> select count(*)from customer;
 COUNT(*)
----------
        0

SQL> grant select on customer to trudb1;
Grant succeeded.

SQL> create view test_view as select *from customer;
View created.
SQL> drop view test_view;
View dropped.
SQL> select count(*)from customer;
 COUNT(*)
----------
        0