为什么sqlplus没有连接？

Question

我的目标是从OS X机器连接到Oracle 9i实例.我按照这里的设置说明进行了操作,没有错误(最终).但是,我发现sqlplus无法连接:

[ ethan@gir ~ ]$ sqlplus xxx/yyy@zzz

SQL*Plus: Release 10.2.0.4.0 - Production on Fri Apr 17 10:13:08 2009

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.

Looooong等待......

ERROR:
ORA-12170: TNS:Connect timeout occurred

Enter user-name: xxx
Enter password: 
ERROR:
ORA-12162: TNS:net service name is incorrectly specified

Enter user-name:

我的tnsnames.ora档案......

zzz =
  (DESCRIPTION = 
    (ADDRESS_LIST =
      (ADDRESS =
        (PROTOCOL = TCP)
        (HOST = dbhost)
        (PORT = 1521))
    )
  (CONNECT_DATA =
    (SERVICE_NAME = zzz)
  )
)

也许有一个需要设置的env变量？

---

UPDATE

能ping数据库主机没问题.

试了...

sqlplus xxx/yyy@//dbhost/zzz

拿到...

ERROR:
ORA-12170: TNS:Connect timeout occurred

尝试使用SID而不是SERVICE_NAME在tnsnames.ora中.似乎没有改变结果.回到了SERVICE_NAME.

---

sqlnet.log中的最后几个条目...

***********************************************************************
Fatal NI connect error 12170.

  VERSION INFORMATION:
    TNS for MacOS X Server: Version 10.2.0.4.0 - Production
    TCP/IP NT Protocol Adapter for MacOS X Server: Version 10.2.0.4.0 - Production
  Time: 17-APR-2009 10:33:06
  Tracing not turned on.
  Tns error struct:
    ns main err code: 12535
    TNS-12535: Message 12535 not found; No message file for product=network, facility=TNS
    ns secondary err code: 12560
    nt main err code: 505
    TNS-00505: Message 505 not found; No message file for product=network, facility=TNS
    nt secondary err code: 60
    nt OS err code: 0


***********************************************************************
Fatal NI connect error 12170.

  VERSION INFORMATION:
    TNS for MacOS X Server: Version 10.2.0.4.0 - Production
    TCP/IP NT Protocol Adapter for MacOS X Server: Version 10.2.0.4.0 - Production
  Time: 17-APR-2009 11:24:08
  Tracing not turned on.
  Tns error struct:
    ns main err code: 12535
    TNS-12535: Message 12535 not found; No message file for product=network, facility=TNS
    ns secondary err code: 12560
    nt main err code: 505
    TNS-00505: Message 505 not found; No message file for product=network, facility=TNS
    nt secondary err code: 60
    nt OS err code: 0

---

部分答案

谢谢大家的回答.他们很有帮助.我发现存在DNS问题.我能够通过主机名ping,所以认为应该正常工作.我也试过IP地址.原来我需要内部的 "10.1.xx"IP地址才能在这台OS X机器上运行(但主机名在Windows上很好).

此时,我可以与...联系

sqlplus xxx/yyy@//INTERNAL_IP/zzz

但是,将这些值输入到tnsnames.ora中,这仍然不起作用......

sqlplus xxx/yyy@zzz

...

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

---

我搜索了一个接近我需要的样本tnsnames.ora文件,并将内容复制到我的文件中.改变了参数,现在一切正常.不知道为什么我的工作不起作用.

Answer 1

由于您使用的是10g客户端,因此建议使用Easy Connect语法:

export TWO_TASK=//dbhost/zzz
sqlplus xxx/yyy

或者只是这个:

sqlplus 'xxx/yyy@//dnhost/zzz'

还要检查您的ORACLE_HOME点到正确的文件夹:tnsnames.ora搜索到$ORACLE_HOME/network/admin/tnsnames.ora