TNS-03505问题解决总结
最近部署项目,Linux系统使用非oracle用户测试(比如test)tnsping orcl出现如下提示信息:TNS-03505: Failed to resolve name
最近部署项目,,Linux系统使用非Oracle用户测试(比如test)tnsping orcl出现如下提示信息:
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 04-DEC-2012 14:29:28
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
/opt/oracle/product/11g/network/admin/sqlnet.ora
TNS-03505: Failed to resolve name
乍一看,问题出现原因清楚明了。就是orcl服务名无法解析。但是我在本局域网使用其它windows系统中的pl/sql可以连接。
因为对Linux系统认知甚少,所以一头雾水。去网搜一下很多,大约有这么几种解决方案:
一是文件配置错误;
二是sqlnet.ora文件中NAMES.DIRECTORY_PATH设置问题;
三是lsnrctl status 监听错误或者sqlplus版本问题。
第一种情况意思就是说在tnsnames.ora这个文件中我配置的orcl有问题,大部人说前面不能有空格,我的本来就没有;再就是listener.ora有一个标准的写法,如下:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = /oracle/product/10.2.0/db_1)
(SID_NAME = orcl)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)
第二种情况说的是通过客户端访问数据库服务器顺序。我也是从这个帖子发现我的问题的,我的linux用户test没有访问tnsname.ora这个文件的权限。
第三种情况说的是监听服务没起来。这个很容易就能查别,使用lsnrctl status即可知道。
通过解决这么一个问题,我总结一下思路:
首先:查询监听状态。因为我的可以通过其它客户端访问,所以不会是监听的问题。
其次:使用oracle用户,测试tnsping orcl。一般情况下肯定通。非oracle用户并且不属于oracle用户所属组的查看是否有权限。没有权限使用: chmod o+r tnsname.ora即可。
最后:版本兼容性的问题。

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