SQLPLUS, TOAD and TNSNAMES

I am having a look at the latest version of Toad (9.7.2.5) and have installed a virtual PC for it with a 10.2 client. I currently use version 8.0.0.47 with a 9i client and it works fine. Even though I have copied my existing SQLNET.ORA and TNSNAMES.ORA onto the virtual PC I cannot make a normal connection to the database, the new version of Toad does allow a 'Direct' as opposed to a TNS connection and if I put in the either the IP or the HOST (from TNSNAMES) along with port 1521 and the SERVICE_NAME (from TNSNAMES) I get connected to the database
Here is the entry from my TNSNAMES.ORA
DB_NET_SERVICE_NAME=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=db.office.lan)
(PORT=1521)
(CONNECT_DATA=
(SERVER=dedicated)
(SERVICE_NAME=DB_SERVICE_NAME)
Using the TNS option, I get ORA-12154: TNS:could not resolve the connect identifier specified (DB_NET_SERVICE_NAME)
I have checked the TNSNAMES.ORA file and it all looks OK, I have used Toad to check the syntax and it is OK
SQLNET.ORA has
NAMES.DEFAULT_DOMAIN = office.lan
NAMES.DIRECTORY_PATH=(TNSNAMES, EZCONNECT)
and either
SQLNET.AUTHENTICATION_SERVICES=(NONE)
or
SQLNET.AUTHENTICATION_SERVICES=(NTS)
I have tried both.
I am not using TNS_ADMIN and both TNSNAMES.ORA and SQLNET.ORA are in the default directory
Any ideas as to what is wrong?
I can't connect in SQLPLUS either, what do I need to enter in the HOST String?

Re NAMES.DEFAULT_DOMAIN = office.lan
When it is commented out
tnsping DB_NET_SERVICE_NAME gets the response
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS= (PROTOCOL=TCP) (HOST=db.office.lan) (PORT=1521)) (CONNECT_DATA= (SERVER=dedicated) (SERVICE_NAME=DB_SERVICE_NAME)))
OK (20 msec)
TOAD (connecting to the DB DB_NET_SERVICE_NAME) gets the response
ORA-12154: TNS:could not resolve the correct identifier specified (DB_NET_SERVICE_NAME)
When it is commented back in
tnsping DB_NET_SERVICE_NAME gets the response
Used parameter files:
C:\oracle\product\10.2.0\client_2\network\admin\sqlnet.ora
TNS-03505: Failed to resolve name
TOAD (connecting to the DB DB_NET_SERVICE_NAME) gets the response
ORA-12154: TNS:could not resolve the correct identifier specified (DB_NET_SERVICE_NAME)

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Help on Listener and Tnsnames.ORA

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Hi, there
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null

wrjih (guest) wrote:
: Hi, there
: I store my oracle database in the machine A. In the machine B,
: it only install the oracle without create database. How should
: I write the
: listener.ora and tnsnames.ora? So that the machine B could
: acces the database which store in the machines A.
: Could you give me a simple example and with some description.
: Thanks you very much!!
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(ADDRESS = (PROTOCOL = TCP)(HOST = server01.lan)(PORT = 1521))
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null

Dynamic registration feature is available since Oracle 8i. The registration is performed by the PMON process of each database instance that has the necessary configuration in the database initialization parameter file. Dynamic service registration does not require any configuration in the listener.ora file.
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Path of Sqlnet.ora and Tnsnames.ora

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in
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and
one in
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Message was edited by:
orafad

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Is perhaps TNS_ADMIN set to d:\orahome_1 ?where do i check this parameter ?
What does output of following tell youc:\> tnsping sid
C:\WINNT\system32>tnsping sid
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 05-JUL-2006 19:17:26
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
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Setting the listener and tnsnames.ora

Hi,
I have two node cluster database 10.2.0.4 on Linux. Someone messed up with the tnsnames file and also the local,remote listener setting are gone during the switchover.
Now I just want to replace the new tns entries,listener entries, set the local/remote listener and then register the local/remote listener. During these changes it will not affect the applications, but just want to know is there any specific steps which I have to keep in mind.
Thank you.
Edited by: 936264 on May 23, 2012 8:52 AM

Hi
Did you not back them up? :-)
The answer to your question is yes. Basically, you need your listener referenced in the listener.ora for each node, then you need to reference those listeners in your tnsnames.ora - one for your local listener and another for your remote listener. A good starting point will be what you've got in your LOCAL_LISTENER and REMOTE_LISTENER parameter - that will show the names of the entries you need to create in the tnsnames.ora. I have all entries in the listener.ora and tnsnames.ora on both nodes just for simplicity but you don't have to do that.
Any idea what port you used for your listener? The default 1521?
A couple of examples from my test system:
listener.ora (we use port 1550 by the way):
LISTENER_DEVDB_NODE1 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-vip)(PORT = 1550)(IP = FIRST))
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(DESCRIPTION =
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(DESCRIPTION_LIST =
(DESCRIPTION =
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LISTENERS_DEVDB =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-vip)(PORT = 1550)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = node2-vip)(PORT = 1550)(IP = FIRST))
So our local listener is LISTENER_DEVDB_NODEn for each and REMOTE_LISTENER is LISTENERS_DEVDB on each node.
Hope that helps. Any further questions let me know....
cheers,
Mark
orabackus.wordpress.com

How to configure listener and tnsnames.ora on 10g version

how to configure listener and tnsnames.ora on 10g version

If you are on linux platform, on command prompt execute netmgr and configure listener fromt there. Or go to $oracle_home/network/admin/listner.ora write the following
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
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