Is TNS Listener running?

Question

Hello,
I'm trying to find if the TNS lister is running corrrectly?
If I run command: lsnrctl status
The result is:
===========================================
LSNRCTL for 32-bit Windows: Version 10.1.0.2.0 - Production on 10-MAR-2006 10:52:12
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Produ
ction
Start Date 09-MAR-2006 15:31:59
Uptime 0 days 19 hr. 20 min. 12 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File E:\oracle\product\10.1.0\Db_1\network\admin\listener.o
ra
Listener Log File E:\oracle\product\10.1.0\Db_1\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=mypcname.mydomainanme)(PORT=8080))(Pre
sentation=HTTP)(Session=RAW))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=mypcname.mydomainanme)(PORT=2100))(Pre
sentation=FTP)(Session=RAW))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
==================================
My oracle10g database service name is: orcl
So I run this command: lsnrctl status orcl
C:\>lsnrctl status orcl
the result is:
===============================
LSNRCTL for 32-bit Windows: Version 10.1.0.2.0 - Production on 10-MAR-2006 11:03
:35
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=mypcname.mydomainanme)(POR
T=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
32-bit Windows Error: 61: Unknown error
=====================================================
From above result, I got some error when I run lsnrctl status orcl. Can someone help answer the reason for the error? Is the TNS Listener is running correctly?
Thanks a million for your instruction,
Emily

Answer 1

the ORACLE_HOME environment variable has to point to the software directory where you Oracle software is installed.
The variable is picked up by oracle client software, were to search for is libary and eg. language files.
In your case ORACLE_HOME=E:\oracle\product\10.1.0\Db_1
ORACLE_BASE is another important variable, most of the time it points to the directory which is one directory above ORACLE_HOME, so in you case
ORACLE_BASE=E:\oracle\product\10.1.0\
These variables are on windows default set during the software installation, in you registry (HKEY_LOCAL_MACHINE), but as you apparently found out you can set them also on the command prompt to overrule the defaults.
Q1
You don't have to remove all the variables in your PATH setting, just be sure that the client software you are trying to execute is using the correct oracle variables. So be aware that the corresponding ORACLE_HOME variable is one of the first to be mentioned in your path setting. Otherwise use
set ORACLE_HOME=E:\oracle\product\10.1.0\Db_1
set PATH=%ORACLE_HOME%;%PATH%
or on unix/linux
export ORACLE_HOME=.... ;
export PATH=$ORACLE_HOME:$PATH
if you want start start, for example sqlplusw.exe (sqlplus windows), set your path as follows
set ORACLE_HOME=E:\oracle\product\10.1.0\Db_1
set PATH=%ORACLE_HOME%\bin;%PATH%
(sqlplusw.exe or most other executables are located in the "bin" directory)
Q2
The remark in the manual is a precaution because the installation will set ORACLE_HOME themselfs. So just get yourself a windows command window/prompt
type c:> set ORACLE_HOME=
this will clear the variable. Now go to the directory where the setup.exe executable is and execute it.
Q3
i didn't read it, but the SID or ORACLE_SID is a uniek identifier which gives the database its uniek name. This name is linked to as service in windows, called in Oracle terms the Oracle instance (memory part of the database and its threads/daemons). The GLOBAL_DATABASE_NAME is a more friendly name for the database which most of the time is a sort of fully qualified (database) name. (databasename.servername.networkname.etc)
Q4
as said ORACLE_HOME is used by the oracle programs. The "know" that in sub directory BIN the executables are located, in the sub directory NETWORK/ADMIN the default sqlnet configuration files, in the sub-directory NLS the message files can be found etc, etc, etc. It''s for Oracle prog. use only...(more or less)