PowerDesigner导出SQL，导入到Oracle中查询表结构报“ORA-04043:

G:\编程资料\Learning\数据库应用技术 Oracle\实验\实验五>sqlplus wgb

SQL*Plus: Release 11.2.0.1.0 Production on 星期二 6月 11 09:07:05 2013

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

输入口令:

连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> SELECT * from tab;

TNAME                          TABTYPE  CLUSTERID
------------------------------ ------- ----------
tb_class                       TABLE
tb_course                      TABLE
tb_score                       TABLE
tb_select                      TABLE

TNAME                          TABTYPE  CLUSTERID
------------------------------ ------- ----------
tb_student                     TABLE
tb_teacher                     TABLE
tb_user                        TABLE

已选择7行。

SQL> DESC tb_class;
ERROR:
ORA-04043: 对象 tb_class 不存在


SQL> DESC tb_course;
ERROR:
ORA-04043: 对象 tb_course 不存在


SQL> DESCRIBE tb_class;
ERROR:
ORA-04043: 对象 tb_class 不存在


SQL> SELECT * from tb_class
  2  ;
SELECT * from tb_class
              *
第 1 行出现错误:
ORA-00942: 表或视图不存在


SQL> DESC "tb_class";
 名称                                      是否为空? 类型
 ----------------------------------------- -------- ----------------------------

 n_teacher_id1                                      NUMBER(8)
 n_student_id                                       NUMBER(8)
 n_class_id                                NOT NULL NUMBER(8)
 vc_class_name                             NOT NULL VARCHAR2(40)
 vc_class_col                              NOT NULL VARCHAR2(30)
 n_course_teacher_id                       NOT NULL NUMBER(8)