ANBOB™

####################243  oracle 10.2.0.1#################
sqk>conn anbob/

SQL> create table test(sid varchar2(20),d date);

Table created.

################# xp oracle 11g r1 ####################

C:\>sqlplus / as sysdba

SQL*Plus: Release 11.1.0.6.0 – Production on 星期一 5月 30 10:46:58 2011

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

连接到:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 – Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select * from v$version;

BANNER
——————————————————————————–
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 – Production
PL/SQL Release 11.1.0.6.0 – Production
CORE    11.1.0.6.0      Production
TNS for 32-bit Windows: Version 11.1.0.6.0 – Production
NLSRTL Version 11.1.0.6.0 – Production

SQL> host
Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\>tnsping mytest

TNS Ping Utility for 32-bit Windows: Version 11.1.0.6.0 – Production on 30-5月 -2011 10:47:17

Copyright (c) 1997, 2007, Oracle.  All rights reserved.

已使用的参数文件:
d:\oracle\product\11.1.0\db_1\network\admin\sqlnet.ora

已使用 TNSNAMES 适配器来解析别名
Attempting to contact (DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (HOST=192.168.3.243) (PORT=1521)) (CONNECT_DATA= (SERVER=dedicated) (SERVICE_NAME=orcl)))

OK (20 毫秒)

C:\>exit

SQL> create public database link rhel243
2  connect to anbob identified by anbob
3  using ‘mytest’;

数据库链接已创建。

SQL> select * from dual@rhel243;

D
–
X

SQL> select * from test@rhel243;

未选定行

SQL> insert into test@rhel243(sid)
2  select instance_number from v$instance;
select instance_number from v$instance
*
第 2 行出现错误:
ORA-02070: 数据库  不支持此上下文中的

SQL> select instance_number from v$instance;

INSTANCE_NUMBER
—————
1

SQL> insert into test@rhel243(sid) select ‘aaa’ from dual;

已创建 1 行。

SQL> commit;

提交完成。

SQL> insert into test@rhel243(sid)
2  select instance_number from v$instance;
select instance_number from v$instance
*
第 2 行出现错误:
ORA-02070: 数据库  不支持此上下文中的

SQL> insert into test@rhel243(sid)
2  select instance_number from gv$instance;

就可以了

v$是基于gv$创建 的，而gv$是用于多实例

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