更好的方法是，如果您有权访问主机并且Oracle安装使用以下命令：lsnrctl status。这适用于Unix，Linux和Windows机器。 status命令将显示所有监听器(及其相关的SID)。

C:\>lsnrctl status

LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 15-JUN-2009 16:16:34

Copyright (c) 1991, 2005, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))

STATUS of the LISTENER

------------------------

Alias LISTENER

Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production

Start Date 13-JUN-2009 12:04:14

Uptime 2 days 4 hr. 12 min. 19 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Default Service XE

Listener Parameter File C:\oracle\XE\app\oracle\product\10.2.0\server\network\admin\listener.ora

Listener Log File C:\oracle\XE\app\oracle\product\10.2.0\server\network\log\listener.log

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ThinkpadT61)(PORT=1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=8080))(Presentation=HTTP)(Session=RAW))

Services Summary...

Service "CLRExtProc" has 1 instance(s).

Instance "CLRExtProc", 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...

Service "XEXDB" has 1 instance(s).

Instance "xe", status READY, has 1 handler(s) for this service...

Service "XE_XPT" has 1 instance(s).

Instance "xe", status READY, has 1 handler(s) for this service...

Service "xe" has 1 instance(s).

Instance "xe", status READY, has 1 handler(s) for this service...

The command completed successfully

在上面的例子可以连接到使用CONECT字符串XEXDB，XE_XPT或XE的XE数据库。