TNS error ORA-12154

Hi all,
One of our client is trying to connect to our database from his local pc. We are able to connect to the database fine from here.
But when he connects from his pc via vpn it gives him this error:
Ora-12154: TNS:could not resolve the connect identifier specified.
I checked the path and the Oracle client is in the path on his pc. Tnsping works. Not sure what else I should check. I do not have access to his pc, I just have to troubleshoot on the phont.
Below is his sqlnet.ora and tnsnames.ora.
# SQLNET.ORA Network Configuration File: C:\oracle\product\10.2.0\client_1\network\admin\sqlnet.ora
#NAMES.DIRECTORY_PATH= (TNSNAMES)
# tnsnames.ora Network Configuration File: C:\oracle\product\10.2.0\client_1\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
alp =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = alm)(PORT = 1525))
(CONNECT_DATA =
(SID = alp)
(SERVER = DEDICATED)
Please give me your suggestions.
Thanks.
Edited by: user553564 on Oct 3, 2008 7:55 AM

When you do the tnsping, does it say using tnsnames or hostname? I've noticed it can be a bit confusing when you have a host running oracle that is not in your tnsnames.ora, it will successfully tnsping, because the host has a listener running, but you can't attach because the connection string is different. For example, I can tnsping a host named POLARIS, which is not in my tnsnames.ora, but it is in DNS and is running XE. D'Oh!
You might consider trying a service_name that matches your lsnrctl status output, rather than SID in the tnsnames.ora. It's also possible the user has multiple tnsnames.ora (especially if several things have been installed), and is picking up the wrong one. Try changing things the connect name to something just plain weird and see if it makes a difference. See if there is TWO_TASK in your environment, too.
Other reasons I'm going bald: case sensitivity of the SID; having two nearly identical entries in the tnsnames.ora and not scrolling down while editing; sqlnet.ora strangenesses; and I've "seen" (in earlier versions, anyways), invisible characters causing problems.

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TNS error ORA-12154 : can connect to one server but not to another.

Hello,
I have a Forms 6.0 application running on a Solaris box. It connects
fine to an Oracle 9.0 server but fails with ORA-12154 when trying to
connect to Oracle 10g running on a different server.
'sqlplus' can connect fine to both servers .
'tnsping'result is succesful from the Solaris client to both servers.
Configuration details are as follows. (IP Addresses have been
sanitised. I've included the client side listener and also entries for
the 'local' Oracle 8i server running on the Solaris 'client' although
I think some of this may be not relevant):
1. Connecting to Server 9.0 : application CAN connect successfully:
a. application URL
http://host_ip_address:7778/dev60cgi/if60cgi?config=rack : application
runs successfully
b. client's formsweb.cfg excerpt:
[rack]
pageTitle=yadayada
form=login01
userid=user/pass@nn_rackspace
archive=f60all.jar, oracle_ice-4_03_1.jar
c. client's tnsnames.ora excerpt (local services not excluded):
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = sun1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = orcl)
RR =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = sun1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = RR)
NN_RACKSPACE =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 1.2.33.44)(PORT =1521))
(CONNECT_DATA =
# (SERVER = DEDICATED)
(SERVICE_NAME = QQ1.QONNECTIS.COM)
NN_QQ3 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 2.3.44.55)(PORT = 1521))
(CONNECT_DATA =
# (SERVER = DEDICATED)
(SERVICE_NAME = orcl.qonnectis.com)
NN_QQ3.qonnectis.com =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 2.3.44.55)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 2.3.44.55)(PORT = 1521))
(CONNECT_DATA =
# (SERVER = DEDICATED)
(SERVICE_NAME = orcl.qonnectis.com)
d. client's sqlnet.ora: contains ONLY:
NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)
e. client's listener.ora excerpt:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /space/oracle/OraHome1)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = /space/oracle/OraHome1)
(SID_NAME = orcl)
(SID_DESC =
(GLOBAL_DBNAME = NN)
(ORACLE_HOME = /space/oracle/OraHome1)
(SID_NAME = NN)
(SID_DESC =
(GLOBAL_DBNAME = RR)
(ORACLE_HOME = /space/oracle/OraHome1)
(SID_NAME = RR)
f. remote server's tnsnames.ora excerpt:
QQ1.QONNECTIS.COM =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(HOST = qanasta1.qonnectis.com)
(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = QQ1.qonnectis.com)
QQ1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)
(HOST = qanasta1.qonnectis.com)
(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = QQ1)
QQ3.QONNECTIS.COM =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 2.3.44.55)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = orcl.qonnectis.com)
g. remote server's sqlnet.ora contains only:
NAMES.DEFAULT_DOMAIN = qonnectis.com
NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)
h. remote server's listener.ora excerpt:
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)
(HOST =qanasta1.qonnectis.com)
(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /opt/oracle/product/9.2.0.1.0)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = QQ1.qonnectis.com)
(ORACLE_HOME = /opt/oracle/product/9.2.0.1.0)
(SID_NAME = QQ1)
i. on Solaris client, tnsping nn_rackspace : succeeds
j. on Solaris client, sqlplus user/pass@nn_rackspace: succeeds
k. on server, Oracle server processes have names like ora_d000_QQ1.
l. on server, Oracle connected listener processes show up in ps
listing like oracleQQ1 (LOCAL=NO)
m. On server, lsnrctl status reports amongst other things
Service "QQ1.qonnectis.com" has 2 instance(s).
Instance "QQ1", status UNKNOWN, has 1 handler(s) for this service...
Instance "QQ1", status READY, has 1 handler(s) for this service...
2. Connecting to Server 10g : application does NOT connect successfully:
a. application URL
http://host_ip_address:7778/dev60cgi/if60cgi?config=rack2
b. client's formsweb.cfg excerpt:
[rack2]
pageTitle=yadayada
form=login01
userid=user/pass@nn_qq3
archive=f60all.jar, oracle_ice-4_03_1.jar
c. client's tnsnames.ora excerpt (local services not excluded):
-as above-
d. client's sqlnet.ora: contains ONLY:
-as above-
e. client's listener.ora excerpt:
-as above-
f. remote server's tnsnames.ora excerpt:
# default sid 'orcl' : for local access
orcl =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl.qonnectis.com)
# QQ3_Vlan : default sid 'orcl' : access over 10. private net from qq1
QQ3_VLAN =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.99.99.99)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl.qonnectis.com)
# nn_qq3 : default sid 'orcl' : access from external sites by public
# external IP - specifically sun admin dba tool in twx
NN_QQ3 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 2.3.44.55)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl.qonnectis.com)
g. remote server's sqlnet.ora contains only:
NAMES.DIRECTORY_PATH= (TNSNAMES)
NAMES.DEFAULT_DOMAIN = qonnectis.com
h. remote server's listener.ora excerpt:
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/OraHome_1)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = /u01/app/oracle/OraHome_1)
(SID_NAME = orcl)
i. on Solaris client, tnsping nn_qq3 : succeeds
j. on Solaris client, sqlplus user/pass@nn_qq3: succeeds
k. on server, Oracle server processes have names like ora_d000_orcl .
l. on server, Oracle connected listener processes show up in ps
listing like oracleorcl (LOCAL=NO)
m. On server, lsnrctl status reports amongst other things
Service "orcl" has 1 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this
service...
Service "orcl.qonnectis.com" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
As you can see, I have tried adding an alias for the default domain
name suffix '.qonnectis.com' in the tnsnames.ora files on the solaris
client and on the new 10g server.
Just to add to the fun, the 'new' server running Ora 10g CANNOT connect
to the old server running Ora 9:
sqlplus user/pass@nn_qq3
sqlplus user/pass@nn_qq3.qonnectis.com both fail.
While the old 9.0 server CAN connect to the new 10g one:
sqlplus user/[email protected] succeeds.
Sorry this is such a mess. TBH I find this whole area extremely
confusing.
All suggestions welcome. Unfortunately I am away on holiday next week
but will follow up any leads when I get back.
thanks!
Victor Churchill.

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Discoverer Plus Error: ORA-12154:TNS:could not resolve the

Hi,
I’m running the Discoverer report in Discoverer Plus and getting the below error, but when the same report ran in Desktop completes successfully and the SQL from the report is running without error in SQL nav.
Database Error - ORA-12154:TNS:could not resolve the connect identifier specified.
Thanks in Advance.
Sunil

Hi Sunil,
Did you test the direct method I posted above? That will bypass the tnsnames.ora file. If it connects fine that way, then you likely have a configuration issue with your sqlnet.ora and/or tnsnames.ora
You can test with:
$ORACLE_HOME/bin/tnsping <tnsalias>
If it is successful, then check if you have the TNS_ADMIN environment variable set (echo $TNS_ADMIN) -- assuming Linix/Unix, if Windows, check system environment variables
You may TNS_ADMIN set and pointing to a tnsnames.ora that is not in the default location.
If it fails and your tns entry is correct in the tnsnames.ora file, then you may need to look at the sqlnet.ora
For example,
If you have NAMES.DEFAULT_DOMAIN set.. then you would need enter: <tnsalias>.<domain> (i.e. scott.world)
or you may need to check if TNSNAMES is first in NAMES.DIRECTORY_PATH=
You can remove or rename the sqlnet.ora to make sure that is not an issue.
Hope that helps. Good Luck.
~Steve.

While logging I am getting error ORA-12154:

I am getting this error, while logging.
ERROR:
ORA-12154: TNS:could not resolve service namePls Wat I need to do,

hi coolguy,
my sqlnet.ora file is
# SQLNET.ORA Network Configuration File: C:\oracle\ora92\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)and my tnsnames.ora file is
# TNSNAMES.ORA Network Configuration File: C:\oracle\ora92\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
EXTPROC_CONNECTION_DATA.ASTSERVER40.COM =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
SANDB.ASTSERVER40.COM =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ast16)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = sandb)
INST1_HTTP.ASTSERVER40.COM =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ast16)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = SHARED)
      (SERVICE_NAME = MODOSE)
      (PRESENTATION = http://HRService)
)and my computer name:
Full computer name: ast16.astserver40.com
Domain                  : astserver40.comand I tested in command prompt, with tnsping which is mentioned you I am getting this error
C:\>tnsping sandb
TNS Ping Utility for 32-bit Windows: Version 9.2.0.1.0 - Production on 21-NOV-20
07 11:20:22
Copyright (c) 1997 Oracle Corporation. All rights reserved.
Used parameter files:
C:\oracle\ora92\network\admin\sqlnet.ora
TNS-03505: Failed to resolve namewhere's the problem....
Message was edited by:
user594309

I got the error ORA-12154 trying to connect my app but not with the SQLplus

Hello! i need your help,
I have a client (Win XP SP2) and i'm trying to connect to the database in the server (Windows 2003, Oracle 10G) using the SQL plus, this is ok, but i try to do it throught the application developed in Developer 6i and i cannot, i got the error: ORA-12154 TNS:could not resolve service name. I tried to solve it by setting the env. var TNS_ADMIN and i still have the same error.
Could anyone help me?, please

Hi,
Check for following file TNSNAMES.ORA at location;
C:\<Forms-directory>\NET80\ADMIN
See, if your service name is added to your file. If not then add a new entry like;
gsm.world =
(DESCRIPTION =
(ADDRESS = (COMMUNITY = tcp)(PROTOCOL = TCP)(Host = 10.0.1.22)(Port = 1521))
(CONNECT_DATA = (SID = gsm))
Where:
gsm.world = your service through which you connect to databse.
Host = ip address of machine where oracle server is running.
sid = name of your database
If you already have entry of service in TNSNAMES.ora file then paste you service here as is did , so that we can check because the error you are facing is only due to service problem. Please update........

Error ORA-12154

Hi friends.
When I try to connect with a database, shows this error:
SQL> conn system/[email protected]
ERROR:
ORA-12154 TNS:could not resolve service name
Thanks in advance for your help.

Use the Net8 assistant to set up your sqlnet.ora and tnsnames.ora

Error ORA-12154 trying to connect with instant client 11g / LDAP on Ubuntu

Hello,
I have successfully installed instant client 11.2.0.2 and sqlplus on my Ubuntu 11.04 workstation. I am able to successfully connect to DB's defined in tnsnames.ora, but when the resolution is (or should be) by LDAP, I get error
ORA-12154: TNS:could not resolve the connect identifier specified
Note: while it's fine for testing, it's not a viable option to setup all the DB's defined in the OID in tnsnames.ora - I need to use LDAP.
My setup is as follows:
Install folder: /opt/oracle/instantclient_11_2
TNS_ADMIN=/opt/oracle/instantclient_11_2/
sqlnet.ora
NAMES.DIRECTORY_PATH=(TNSNAMES,LDAP)
I am certain that tnsnames.ora and ldap.ora are valid, as I can connect successfully on another machine with the full client installed using the same files.
I tried to setup tracing in sqlnet.ora as follows
TRACE_LEVEL_CLIENT = SUPPORT
TRACE_DIRECTORY_CLIENT = /tmp
TRACE_FILE_CLIENT = sqlnet.trc
but not trace file gets generated in /tmp - am I doing something wrong ? (Note, I also tried to set DIAG_ADR_ENABLED=OFF as suggested by Laurenz Albe in Instant client don't work trace but that did not help)
I checked DocID=359206.1 but I don't think that applies as I'm on 11g.
Hope someone can help. Thanks in advance !

rgoold, you are a star ! I should have thought about line endings of course. Many thanks for your suggestion, that fixed the problem.
# file *.ora
ldap.ora: ASCII text, with CRLF line terminators
sqlnet.ora: ASCII text, with CRLF line terminators
# dos2unix *.ora
dos2unix: converting file ldap.ora to UNIX format ...
dos2unix: converting file sqlnet.ora to UNIX format ...
# ./sqlplus -L user@database
SQL*Plus: Release 11.2.0.2.0 Production on Mon Sep 5 15:26:16 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Enter password:
Connected to:
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OFSA RM PROCESS실행시 OCI DRIVER ERROR - ORA-12154 에러발생

제품 : OFSA_RM
작성날짜 : 2003-05-21
OFSA RM PROCESS실행시 OCI DRIVER ERROR - ORA-12154 에러발생
====================================================
PURPOSE
Problem Description
RM process 실행시 아래와 같은 에러 발생.
Oracle RM
Version 4.5.36
Copyright (c) Oracle Corporation, 1995-2000
All rights reserved worldwide.
MB(Oracle Financial Services Application error) (203105) Oracle drv_oci error:
OCI Function: [0] - olon(), orlon()
Oracle Error: [12154] - ORA-12154: TNS:could not resolve service name
Driver Function: drv_oci::Connect()
MB(AttachDB()) Error attaching to database: OFSA45
Workaround
Solution Description
기존에 사용하던 "OFSA45" 라는 listener가 다른 이름으로 바뀌어 있었다.
OFSA45 Listener를 다시 만들고 test하니, 잘 됨.
Reference Documents
-------------------

First, don't use an ODBC connection, use OCI. Secondly you need to search what's the active home. Also change all your TNSNAMES.ORA files that you can find in your system to make they have the DB name you are trying to resolve. Then try to "tnsping" the DB from a CMD prompt.

Error while trying to retrieve text for error ORA-12154

Hello,
I try to install php 5.1.2 on a WIN2003 server and IIS6 with the OCi8 extension without success from several days.
On my server I've a 920 oracle client and the 10.1 instant client, I copy the tnsnames.ora in the instant client's directory.
I've declare many environnement variables :
- NLS_LANG : AMERICAN_AMERICA.WE8MSWIN1252
- TNS_ADMIN : E:\...\oracle\instantclient_10_1
- ORA_NLS33 : E:\..\oracle\920\ocommon\nls\ADMIN\DATA
With the php command line the oci_connect function correctly works : the php command line use the instant client's tnsnames.ora. I can query with success my database.
When I try to load a web php script (the same as the php command line script) I have the following error " Error while trying to retrieve text for error ORA-12154" ( oci_connect( $user , $pass, $sid ) . The $sid variable have the value of an alias declared in the tnsnames.ora.
If I replace the sid's alias by something like this " (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xx.xx.xx.xx)(PORT=1521)))(CONNECT_DATA=(SID=xx)" in the oci_connect function, I have another error : Error while trying to retrieve text for error ORA-12705.
A web page with the phpinfo function displays the following messages about oci8 extension : It seems to be correct.
oci8
OCI8 Support enabled
Revision $Revision: 1.269.2.8 $
Active Persistent Connections 0
Active Connections 0
Temporary Lob support enabled
Collections support enabled
Do you have any idea ? Thanks a lot

The web server is not seeing the Oracle environment correctly. You need to set PATH to the instant client libraries. ORA_NLS33 is not used for Oracle 10g clients. Perhaps you have some library conflict with two versions of Oracle on the machine?
These may help:
http://www.oracle.com/technology/tech/php/htdocs/php_troubleshooting_faq.html#envvars
http://blogs.oracle.com/opal/2006/05/01

TNS Error: ORA-12541: TNS: no listener.

I have installed Oracle 9i on machine in Windows XP. When I try to open the database SID in the Enterprise Manager, it gives me TNS Error: ORA-12541: TNS: no listener.
I have checked the Oracle Net Configuration:
Protocol: TCP/IP
Host: PNR18
Port: 1521
In the xp administrative tools, I found that the listener is on start.
When I try to test trough ' Net Configration Assistant' getting same error, similarly with Net Manager.
I don't know if I am using the correct protocol in my case of standalone installation.
Any advice/correction? it would be appreciated. I am giving all the information of TNSNAMES.ORA, LISTENER.ORA, SQLNET.ORA, which is on my machine.
Thanks in advance.
# LISTENER.ORA Network Configuration File: #C:\oracle\ora90\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\ora90)
(PROGRAM = extproc)
# TNSNAMES.ORA Network Configuration File: #C:\oracle\ora90\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
# SQLNET.ORA Network Configuration File:
#C:\oracle\ora90\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)

First of all Thanks for suggestions for solutions but still SAME PROBLEM:
Case-1::
I tried according to your suggestion, still SAME error !! I have also configured new DB
with Enterprise MAnager Configuration Assistent - during DB creation same error occured.
1) I have seen in XP service where all listener is running as well as OracleServiceORCL
is also running.
2) OracleOraHome90TNSListener also running with other listeners!
Case-2::
Dear I also delete listener and create new one and also configured Database Description
and tried to do so but still same problem while I am TESTing it with - Net Manager /
Net Configuration Assistant. I have also tried
C:\TNSPING ORCL - it is giving 'ok' result
but when I am using C:\LSNRCTL START listener - it gives me following errors.
Service OracleOraHome90TNSListener already running.
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 1056: Unknown error
Thats the whole story....hope this time you will find easy to give solution.
All files after your suggestion are as follow:
# TNSNAMES.ORA Network Configuration File: C:\oracle\ora90\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
# LISTENER.ORA Network Configuration File: C:\oracle\ora90\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = C:\oracle\ora90)
(SID_NAME = ORCL)
(SID_DESC =
(PROGRAM = extproc)
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\ora90)
# SQLNET.ORA Network Configuration File: C:\oracle\ora90\NETWORK\ADMIN\sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.PREFERRED_SERVERS =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNR18)(PORT = 1521))
SQLNET.AUTHENTICATION_SERVICES= (NTS)

ERROR ORA-12154 connecting to Oracle 9i

Hi,
I've downloaded the Oracle Developer Tools for Visual Studio .net and when connecting to an Oracle 9i database I get error: ORA-12154... I'm new to Oracle and I know that is related to the âtnsnames.oraâ file.The location of my file is on the Oracle\ora92\network\admin directory. Do I need a copy of this file to any other directory? I can still connect to the database using SQL+.
Any help will be appreciated.
Many thanks
Justo

Hi Justo,
If ODT was installed correctly, it should have gone into a new Oracle10g Oracle home. This would mean that you need to copy your tnsnames.ora from your Oracle9 Oracle home into your Oracle10g Oracle home so that you can continue to use the same aliases from ODT.
Christian Shay
Oracle

PLEASE HELP! Installation error :ORA-12154 - TNS

Hi everyone,
When I'm installing 9ilite and when it comes to the mobile server repository screen, it get an error message :"ORA-12154 - TNS: could not resolve service name".
But my service name pass the test of TNSPING.
Please help me and any suggestion is greatly apprieciated.
Thank you very much!
Tonie

Check your tnsnames.ora and make sure that webtogo.world tns entry is correct. The entry should refer to the
correct database service name.

Error ORA-12154 TNS: Could not resolve the connect identifier specified

Hi. I'm getting the above error message as I'm trying to create a connection to my oracle 10g database from visual studio 2008. (it's not an ASP.NET app, but a windows forms)
I've installed the Oracle Developer Tools for Visual Studio and am following the instructions found in the "2 Day + .NET Developer’s Guide" for connecting to the database via the "Add Data Source" menu option.
When I get to the form where I'm supposed to supply the data source name, and sign in credentials, it's failing with the above error.
I know I'm using the right credentials but I can sign into SQL Developer using the same ID and password.
Does this have anything to do with my SQLNET.ORA file? I read in another forum that you have to use SQLNET to connect to 10g databases...
is this correct?
any help would be appreciated.
Edited by: user10902634 on Jul 2, 2009 11:32 AM
I've also followed the instructions at http://download-west.oracle.com/docs/cd/A91202_01/901_doc/network.901/a90154/gettings.htm#483215. I just modified the existing service name, and tested it using the same credentials i'm using in vstudio and it worked with no problems.

I found a resolution. I followed the "Oracle developer tools for visual studio FAQ". After my administrator installed the developer tools for me, i had to copy the original tns file over to the new ora home directory.
that fixed the problem.
I'm still having problems though getting my application to run on my client machines.
as a test, i started a new vstudio 2008 project. (.net 2.0) I created a new data source, connected to my oracle database using odp, and then created a data grid control that has all my data from the database.
i compile with no problems. when i copy the files to my client machine and try to run it, i get the following error:
Oracle.DataAccess.Client.OracleException The provider is not compatible with the version of Oracle client at Oracle.DataAccess.Client.OracleInit.Initialize()
at Oracle.DataAccess.Client.OracleDataAdapter..ctor()
at dbtest.DataSet1TableAdapters.WITTableAdapter.InitAdapter() in C:\Documents and Settings\jj\Local Settings\Application Data\Temporary Projects\dbtest\DataSet1.Designer.vb:line 9684
at dbtest.DataSet1TableAdapters.WITTableAdapter.get_Adapter() in C:\Documents and Settings\jj\Local Settings\Application Data\Temporary Projects\dbtest\DataSet1.Designer.vb:line 9600
at dbtest.DataSet1TableAdapters.WITTableAdapter.Fill(WITBASELINEDataTable dataTable) in C:\Documents and Settings\jj\Local Settings\Application Data\Temporary Projects\dbtest\DataSet1.Designer.vb:line 23873
at dbtest.Form1.Form1_Load(Object sender, EventArgs e) in C:\Documents and Settings\jj\Local Settings\Application Data\Temporary Projects\dbtest\Form1.vb:line 12
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///c:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
dbtest
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Development/WIT%20Oracle%20EXE/dbconnectionTest/dbtest/bin/Release/dbtest.exe
Microsoft.VisualBasic
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
System.Runtime.Remoting
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
Oracle.DataAccess
Assembly Version: 2.111.6.20
Win32 Version: 2.111.6.20
CodeBase: file:///C:/Development/WITBaseline%20Oracle%20EXE/dbconnectionTest/dbtest/bin/Release/Oracle.DataAccess.DLL
System.Transactions
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Transactions/2.0.0.0__b77a5c561934e089/System.Transactions.dll
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
I've installed the oracle 10g client on my client machine.
Please and thanks.

Oracle 8i Lite: TNS error (ORA-12203)

Hi,
I Have Installed oracle 8i Lite for win 98/and palm operating system on a WIN 98 , pentium III machine. THE INSTALLATION IS SMOOTH. I am able to see the database and users through the Oracle Navigator. But when i try to connect through sql*plus i get
TNS-12203 TNS:unable to connect to destination error
1)How to find whether oracle services are runnong or not?
2)how to start listener on this 8i lite
3)I have also tried creating service name with bequath protocol
nothing works
Pls Help. Any lead is appreciated

Hi
Your oracle database and forms are installed on different oracle home so when you configurate your sql net that time you are configurating only your oracle database. So for form you must be having different oracle home. you cand change thid from start/oracle inatallation products/home selecter. so change our home and run the form. and if still having problem than check for tnsnames.ora file you must be having two files and both must be having right configuration.
thanks

TNS error ORA-12154

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