解决Oracle 10gR2的client无法登陆Oracle 12.2数据库的问题

发布时间：2020-12-12 15:17:26 所属栏目：百科来源：网络整理

导读：参考链接: http://www.jb51.cc/article/p-znahwtyf-ve.html 首先,在Oracle client端tnsping,结果是ok的. C:UsersAdministratortnsping highgo1TNS Ping Utility for 32-bit Windows: Version 10.2.0.3.0 - Production on 09-MAR-2017 13:57:58Copyright (c)

参考链接:
http://www.52php.cn/article/p-znahwtyf-ve.html
首先,在Oracle client端tnsping,结果是ok的.

C:UsersAdministrator>tnsping highgo1


TNS Ping Utility for 32-bit Windows: Version 10.2.0.3.0 - Production on 09-MAR-2017 13:57:58


Copyright (c) 1997,2006,Oracle.  All rights reserved.


Used parameter files:
H:oracleproduct10.2.0client_1networkadminsqlnet.ora




Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = 192.168.80.12)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = highgo1)))


OK (30 msec)

然后在Oracle Client端用sqlplus登录,是登录不上的:

C:UsersAdministrator>sqlplus system/oracle@highgo1


SQL*Plus: Release 10.2.0.3.0 - Production on Thu Mar 9 13:58:17 2017


Copyright (c) 1982,Oracle.  All Rights Reserved.


ERROR:
ORA-28040: No matching authentication protocol




Enter user-name:

然后到Oracle 12.2的Server端的$ORACLE_HOME/network/admin/目录下,
修改sqlnet.ora文件,添加如下内容:

SQLNET.ALLOWED_LOGON_VERSION_SERVER=10
SQLNET.ALLOWED_LOGON_VERSION_CLIENT=10

修改之后,是立即生效的,不需要重启监听.

额外说明:如上仅仅是权宜之计,因为根据MOS文章:

Client / Server Interoperability Support Matrix for Different Oracle Versions (Doc ID 207303.1)
10.2的client端和12.2的server端---这么用是不受支持的.
11.2.0.3/11.2.0.4的client端和12.2的server端---这么用是受支持的.

（编辑：李大同）

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