今天在WIN32 10G做个DBLINK到LINUX32 11G上，报密码错误，我就郁闷了，我检查了密码在目的数据库上可以正常连接，DBLINK的3个权限也正常，TNSnames.ORA也正常，我差了网上，好像也有这种错误，什么问题啊。

源库TNSNAME.ORA配置文件

orcl =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.171.128)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl)

)

)

EXTPROC_CONNECTION_DATA =

(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))

)

(CONNECT_DATA =

(SID = PLSExtProc)

(PRESENTATION = RO)

)

)

授权和运行

SQL> grant create database link to aaa;

授权成功。

SQL> grant create public database link to aaa;

授权成功。

SQL> grant drop public database link to aaa;

授权成功。

SQL> create database link to_orcl1

2  connect to aaa identified by aaa using 'orcl';

数据库链接已创建。

SQL> select * from aaa.aaa@to_orcl1;

select * from aaa.aaa@to_orcl1

*

第 1 行出现错误:

ORA-01017: invalid username/password; logon denied

ORA-02063: 紧接着 line (起自 TO_ORCL1)

目的库链接

[oracle@localhost ~]$ LANG=ZH_cn

[oracle@localhost ~]$ su -

Password:

[root@localhost ~]# ifconfig

eth0      Link encap:Ethernet  HWaddr 00:0C:29:4F:A2:FF

inet addr:192.168.171.128  Bcast:192.168.171.255  Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fe4f:a2ff/64 Scope:Link

UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

RX packets:1459576 errors:0 dropped:0 overruns:0 frame:0

TX packets:1484580 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:224049580 (213.6 MiB)  TX bytes:327510968 (312.3 MiB)

Interrupt:169 Base address:0x2000

lo        Link encap:Local Loopback

inet addr:127.0.0.1  Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING  MTU:16436  Metric:1

RX packets:6730 errors:0 dropped:0 overruns:0 frame:0

TX packets:6730 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:3030305 (2.8 MiB)  TX bytes:3030305 (2.8 MiB)

[root@localhost ~]# su - oracle

[oracle@localhost ~]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Mon Aug 27 04:36:10 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

SQL> conn /as sysdba

Connected.

SQL> show parameter db_name;

NAME                                 TYPE        VALUE

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

db_name                              string      orcl

SQL> conn aaa/aaa;

Connected.

SQL> select table_name from user_tables;

TABLE_NAME

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

AAA