oracle - ORA-12154 : TNS:could not resolve the connect identifier specified

Question

我正在尝试连接到安装在 Linux EL 5 上的 oracle 11g 并收到以下错误

SQL> connect sys/password@ud06 as sysdba
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor

我在network/admin下的listener.ora如下

LISTENER=
  (DESCRIPTION=
    (ADDRESS_LIST=
      (ADDRESS=(PROTOCOL=tcp)(HOST=ud06)(PORT=1521))
      (ADDRESS=(PROTOCOL=ipc)(KEY=extproc))))

SID_LIST_LISTENER=
  (SID_LIST=
    (SID_DESC=
      (GLOBAL_DBNAME=orcl)
      (ORACLE_HOME=/home/oracle/app/oracle/product/11g)
      (SID_NAME=orcl))
    (SID_DESC=
      (SID_NAME=plsextproc)
      (ORACLE_HOME=/home/oracle/app/oracle/product/11g)
      (PROGRAM=extproc)))

我的 tnsnames.ora 如下

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )

UD06=
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ud06)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
    )
  )

我的 lsnrctl 状态显示如下:

LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ud06.us.server.com)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                17-FEB-2010 16:23:06
Uptime                    0 days 0 hr. 12 min. 33 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11g/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/product/11g/log/diag/tnslsnr/ud06/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ud06.us.server.com)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))
Services Summary...
Service "orcl" has 1 instance(s).
  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
Service "plsextproc" has 1 instance(s).
  Instance "plsextproc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

Answer 1

你能 ping ud06 成功吗(作为 ud06，而不是 ud06.us.server.com)？

命令是什么

lsnrctl services

展示？

编辑:
在我看来，也许数据库实例名称实际上不是“orcl”？ lsnrctl 服务输出告诉我的是，尽管在 listener.ora 文件中定义了“orcl”服务，但实际上并未运行。

您可以使用服务器上的直接连接登录吗？如果是这样，您使用什么作为 ORACLE_SID 环境变量值？以 SYS 用户身份登录并发出命令:

更改系统寄存器；

然后再次发出 lsnrctl services 命令，看看是否有其他实例没有出现。

此外，正如 Alex 指出的那样，tnsping 命令正在报告一个完全限定的服务名称。编辑 sqlnet.ora 文件并将 NAMES.DEFAULT_DOMAIN 值设置为 NULL(如果它有值)。

编辑 2:服务器上的 tnsping ud06 工作吗？或者我假设客户端和服务器在不同的系统上是错误的？