Oracle 监听更改端口以进行远程连接

Question

我安装了 Oracle 11gR2，我现在正尝试从远程系统访问数据库。

我的 listener.ora 还是默认的：

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = /media/oracle/app/oracle

./lsnrctl services 返回：

oracle@ubuntu:/media/oracle/app/oracle/product/11.2.0/dbhome_1/bin$ ./lsnrctl services

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 05-MAY-2010 05:00:49

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
Services Summary...
Service "gis.c2c" has 1 instance(s).
  Instance "gis", status READY, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0 state:ready
         LOCAL SERVER
Service "gisXDB.c2c" has 1 instance(s).
  Instance "gis", status READY, has 1 handler(s) for this service...
    Handler(s):
      "D000" established:0 refused:0 current:0 max:972 state:ready
         DISPATCHER <machine: ubuntu, pid: 2916>
         (ADDRESS=(PROTOCOL=tcp)(HOST=ubuntu.localdomain)(PORT=47616))
The command completed successfully

我无法使用端口 1521 获得远程连接，但上面列出的端口 47616 可以。我不介意使用与 1521 不同的端口，但问题是每次重新启动时此端口都会更改。

出了什么问题？

谢谢！

Answer 1

这不是编程问题，可能属于服务器故障。

但是，我会想到以下几点：

localhost 是否在 /etc/hosts 中定义？而且，如果您想从网络访问侦听器，则不应在本地主机上侦听，而应在外部地址上侦听。

端口 1521 可用吗？通过运行 netstat -tlnp 进行验证。