ORA-12514 TNS:侦听器当前不知道连接描述符中请求的服务 [英] ORA-12514 TNS:listener does not currently know of service requested in connect descriptor

问题描述

我们有一个在本地运行的应用程序，遇到以下错误:

We have an application running locally where we're experiencing the following error:

ORA-12514:TNS:listener当前不知道所请求的服务 在连接描述符中

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

我已经使用TNSPing测试了连接，该连接可以正确解析，并且 我尝试SQLPlus尝试连接，但失败，并出现与上述相同的错误.我将此语法用于SQLPlus:

I've tested the connection using TNSPing which resolved correctly and I tried SQLPlus to try connecting, which failed with the same error as above. I used this syntax for SQLPlus:

sqlplus username/password@addressname[or host name]

我们已验证:

• 服务器上的TNS侦听器正在运行.
• 服务器上的Oracle本身正在运行.

我们不知道对此环境所做的任何更改. 我们还能测试什么?

We don't know of any changes that were made to this environment. Anything else we can test?

推荐答案

我遇到了这个问题，解决方法是确保tnsnames.ora中的SERVICE_NAME在您的数据库中是有效的服务名称.要找出有效的服务名称，可以在oracle中使用以下查询:

I had this issue and the fix was to make sure in tnsnames.ora the SERVICE_NAME is a valid service name in your database. To find out valid service names, you can use the following query in oracle:

select value from v$parameter where name='service_names'

我将tnsnames.ora更新为:

TEST =
   (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = *<validhost>*)(PORT = *<validport>*))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = *<servicenamefromDB>*)
    )
)

然后我跑了

sqlplus user@TEST

成功！ 侦听器基本上是在告诉您，根据数据库，您正在使用的任何service_name都不是有效的服务.

Success! The listener is basically telling you that whatever service_name you are using isn't a valid service according to the DB.

(**我正在从Win7客户端工作站到远程DB上运行sqlplus，并怪DBA;)*)

(*I was running sqlplus from Win7 client workstation to remote DB and blame the DBAs ;) *)

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