ORA-12545

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官方描述:

ORA-12545 TNS:name lookup failure()
Cause: A protocol specific ADDRESS parameter cannot be resolved.
Action: Ensure the ADDRESS parameters have been entered correctly; the most likely incorrect value is the node name

遇到的:

DB版本:11.2.0.1.0

OS版本:WIN XP SP3

处理过程:

错误提示:ORA-12545:因目标主机或对象不存在,连接失败

1.首先TNSPING orcl
发现正常.(注意解析中的HOST=这项)
2.到ORACLE_HOME目录的network/admin下打开tnsnames.ora文件,找到orcl这项.
注意里面的HOST一项是否是数据库的IP地址或电脑名称(测试是否能PING通).
这里修改为与TNSPING中一致的就正常了.

tnsnames.ora文件示例:

# tnsnames.ora Network Configuration File: F:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN\tnsnames.ora# Generated by Oracle configuration tools.<pre name="code" class="plain">ORCL =  (DESCRIPTION =    (ADDRESS_LIST =      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.229)(PORT = 1521))    )    (CONNECT_DATA =      (SERVER = DEDICATED)      (SERVICE_NAME = orcl)    )  )

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