SQL Developer 2.1.0.63 duplicate TNS names displayed in the Connection Type

I'm running SQL Developer 2.1.0.63. The New Connection window displays duplicate Alias names when you select the Connection Type of TNS. I've made sure that the TNS_ADMIN variable name is all in upper case in the Environment Settings but I haven't had any luck eliminating the duplicates. I've tried filling in the TNSNames directory on the preferences setting but this didn't help either. I've also checked my system and I don't have multiple version of TNSNAMES (we keep a public copy on a network share). Does anybody have any suggestions?
We also have SQL Developer 1.5.5 and we don't have this duplicate problem in that version.

I found the problem, it was in the TNSNames file. SQL Developer 2.1 is more sensitive to a messy TNSNames file. This past fall we reworked our environment with new hardware and OS software, during the multiple rounds of testing we created various temporary test databases. The entries that were added to the TNSNames file never got cleaned up and in some cases were added in a random fashion. After I went in and cleaned up some of the old, dead entries I noticed that there were duplicate entries for one of our Development databases. After I removed the duplicate entry in the TNSNAMES file all of the duplicates displayed on the Connection Type screen disappeared. Problem solved.

Similar Messages

Multilple TNS names files used in Connection Network Alias Dropdown

My network's TNS names directory has the latest tnsnames.ora file and also has several older versions named "tnsnames.ora.<date>". In SQL Developer Connections it appears all of them are read to create the Network Alias dropdown list. You can test this by making a copy of your tnsnames.ors file called tnsnames.ora.old1, etc. My guess is that SQL Developer is reading "tnsnames.ora*", not "tnsname.ora".
But I'm just a user, not a DBA admin. Is this a feature or a bug?
Its also possible that keeping the renamed old versions in the TNS names folder instead of a subfolder is just bad form and I need to get that behavior changed internally.
I'm running 1.5.4.59.40. I just installed patch 2 and the behavior is the same.
Edited by: user3457425 on May 26, 2009 5:15 PM

It's a feature. I think I remember some guys asking for support for this because some setups use various tnsnames.* files, but eventually a lot more users are complaining about this. Sqldev 2.0 will probably have changes in this area, so let's hope we will finally be able to choose our location manually...
Regards,
K.

Toad ORA-12154: TNS:could not resolve the connect identifier specified

I'm installing oracle clients and tools on a new Windows 7 machine issued to me by my company.
I installed a 64 bit 10.2.0.3 oracle client, but found that 64 bit installations don't work with TOAD. So I installed a 32 bit 10.2.0.1 oracle client. I also set up my TNS names files in the network/admin directory of both installations, set up the hosts files, and ensured that the registry information is accurate. I have no ORACLE_HOME environment variable because when I installed the 2nd installation of Oracle it said that I shouldn't have one since I have multiple versions of oracle and it erased it.
I am able to connect and use SQL Plus and SQL Developer with both installations of Oracle, but I'm not able to connect with TOAD. TOAD finds the 32 bit installation and all of its registry information looks correct and TOAD says "The Oracle home is valid". TOAD also loads my TNS file and all associated IPs and everything looks good when I look at them in the the TNS Editor. I am also running TOAD as administrator in order to avoid "Can't initialize OCI. Error -1" errors.
Yet, whenever I try to connect to any database, I get the following error:
"ORA-12154: TNS:could not resolve the connect identifier specified" and then the database I am using
Is there anything else I need to setup because I have multiple installations of Oracle? Or anything else I need to setup running on a 64 bit windows machine with 32 bit installations of oracle and toad?
Thanks for any help you can give.

And in case you want to know my registry information:
64 bit installation:
Key Name: HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_OraClient10g_home2
Class Name: Application Global Data
Last Write Time: 10/5/2010 - 11:36 AM
Value 0
Name: ORACLE_HOME
Type: REG_SZ
Data: C:\oracle\product\10.2.0\client_2
Value 1
Name: ORACLE_HOME_NAME
Type: REG_SZ
Data: OraClient10g_home2
Value 2
Name: ORACLE_GROUP_NAME
Type: REG_SZ
Data: Oracle - OraClient10g_home2
Value 3
Name: ORACLE_BUNDLE_NAME
Type: REG_SZ
Data: Enterprise
Value 4
Name: NLS_LANG
Type: REG_SZ
Data:
Value 5
Name: OLEDB
Type: REG_SZ
Data: C:\oracle\product\10.2.0\client_2\oledb\mesg
Value 6
Name: StmtCacheSize
Type: REG_SZ
Data: 0
Value 7
Name: SQLPATH
Type: REG_SZ
Data: C:\oracle\product\10.2.0\client_2\dbs
Value 8
Name: ORACLE_HOME_KEY
Type: REG_SZ
Data: SOFTWARE\ORACLE\KEY_OraClient10g_home2
32 bit installation:
Key Name: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ORACLE\KEY_OraClient10g_home1
Class Name: Application Global Data
Last Write Time: 10/6/2010 - 12:42 PM
Value 0
Name: ORACLE_HOME
Type: REG_SZ
Data: C:\oracle\product\10.2.0\client_3
Value 1
Name: ORACLE_HOME_NAME
Type: REG_SZ
Data: OraClient10g_home1
Value 2
Name: ORACLE_GROUP_NAME
Type: REG_SZ
Data: Oracle - OraClient10g_home1
Value 3
Name: ORACLE_BUNDLE_NAME
Type: REG_SZ
Data: Enterprise
Value 4
Name: NLS_LANG
Type: REG_SZ
Data: AMERICAN_AMERICA.WE8MSWIN1252
Value 5
Name: SQLPATH
Type: REG_SZ
Data: C:\oracle\product\10.2.0\client_3\dbs
Value 6
Name: ORACLE_HOME_KEY
Type: REG_SZ
Data: SOFTWARE\ORACLE\KEY_OraClient10g_home1
And my environment variables:
TNS_ADMIN: C:\Oracle\product\10.2.0\client_3\NETWORK\ADMIN
PATH: "C:\oracle\product\10.2.0\client_3\bin;C:\oracle\p roduct\10.2.0\client_2\bin;%SystemRoot%\system32;% SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT %\System32\WindowsPowerShell\v1.0\;C:\Program Files\TortoiseSVN\bin"
The string "C:\oracle\product\10.2.0\client_3\bin" is the bin directory for my 32 bit installation.
The string "C:\oracle\product\10.2.0\client_2\bin" is the bin directory for my 64 bit installation.

ORA-12154: TNS:could not resolve the connect identifier specified [10g XE]

Greetings
There are many topics on this issue over the internet but None of them addresses this issue properly, so I couldn't find a solution to the problem.
I installed: Oracle Database 10g Express Edition
After the installation was done, I opened SQL Command Line
and I used the command "connect" to login
I enter the username
Then I entered the password
After a couple of seconds I got the following ERROR message:
ORA-12154: TNS:could not resolve the connect identifier specified
Screenshot of the error:
http://i35.tinypic.com/14o26g7.png
I installed this version of Oracle on both Windows XP 32 bit and Windows 7 32 bit and I get the same error message when it tries to connect.
Why doesn't Oracle work right after the installation?
Are there any further steps that need to be done in order to make this work? If so I would really appreciate any step by step help, I've been stuck trying to find a solution for days.
Edited by: user10192105 on Aug 22, 2010 7:34 PM

>
I wento to CMD, then I entered sqlplus / as sysdba and that just opened the SQL*Plus program in CMD (SQL>)
But nevertheless I still need to login with a user name and password which and I tried and I got the same error message.
>
We're making progress, you'll be logging in soon....
Get into SQL*Plus with the command I gave you, now type this:
alter user <theusernameyouwant> identified by abc123;followed by (still in SQL*Plus):
connectafter you type "connect", SQL*Plus will ask you for a user name and password. Use the same user name and password you used in the alter command.
HTH,
John.

ORA-12154: TNS:could not resolve the connect identifier

I am simply trying to move a site from a Windows 2003 32bit server to a Windows 2008 R2 64-bit. The database was on and is remaining on the 2008 server. Trying to run the new site results in:
ORA-12154: TNS:could not resolve the connect identifier
This error pops up more than a few times in the forums but do not seem unique to my situation where I know the connection string works fine from another server. Any insights?

Working
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.
C:\>SET
ALLUSERSPROFILE=C:\Documents and Settings\All Users
APPDATA=C:\Documents and Settings\Cherie.Jarvis\Application Data
ARCGISHOME=D:\Program Files\ArcGIS\
CLIENTNAME=ZEKIAH-PC463
ClusterLog=C:\WINDOWS\Cluster\cluster.log
CommonProgramFiles=C:\Program Files\Common Files
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
COMPUTERNAME=CFLGIS1
ComSpec=C:\WINDOWS\system32\cmd.exe
FP_NO_HOST_CHECK=NO
HOMEDRIVE=C:
HOMEPATH=\Documents and Settings\Cherie.Jarvis
LOGONSERVER=\\BATMAN
NUMBER_OF_PROCESSORS=4
ORACLE_HOME=D:\Ora11g\Administrator\product\11.1.0\db_1
OS=Windows_NT
Path=D:\Program Files\ArcGIS\ArcSDE\ora11gexe\bin;D:\Ora11g\Administrator\produc
t\11.1.0\db_1\bin;D:\Ora11g\Administrator\product\11.1.0\db_1;D:\Ora11g_Client32
\product\11.1.0\client_3;D:\Ora11g_Client32\product\11.1.0\client_3\bin;C:\WINDO
WS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files (x86)\Microsoft
SQL Server\90\Tools\binn\;C:\Program Files\ArcGIS\ArcSDE\ora11gexe\bin
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
PROCESSOR_ARCHITECTURE=AMD64
PROCESSOR_IDENTIFIER=EM64T Family 6 Model 23 Stepping 10, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=170a
ProgramFiles=C:\Program Files
ProgramFiles(x86)=C:\Program Files (x86)
PROMPT=$P$G
PYTHONPATH=D:\Program Files\ArcGIS\bin
SDEFORCEXDR=1
SDEHOME=C:\Program Files\ArcGIS\ArcSDE\ora11gexe\
SESSIONNAME=RDP-Tcp#461
SystemDrive=C:
SystemRoot=C:\WINDOWS
TEMP=C:\DOCUME~1\CHERIE~1.JAR\LOCALS~1\Temp\1
TMP=C:\DOCUME~1\CHERIE~1.JAR\LOCALS~1\Temp\1
TNS_ADMIN=D:\Ora11g\Administrator\product\11.1.0\db_1\NETWORK\ADMIN
USERDNSDOMAIN=CFLHD.LOCAL
USERDOMAIN=CFLHD
USERNAME=Cherie.Jarvis
USERPROFILE=C:\Documents and Settings\Cherie.Jarvis
VS90COMNTOOLS=D:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools\
windir=C:\WINDOWS
C:\Documents and Settings\Cherie.Jarvis>
Not Working
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:>set
AGSSERVERJAVA=C:\Program Files (x86)\ArcGIS\Server10.0\
ALLUSERSPROFILE=C:\ProgramData
ANT_HOME=D:\Software\apache-ant-1.8.1
APPDATA=C:\Users\cherie.jarvis\AppData\Roaming
CLIENTNAME=ZEKIAH-PC463
CommonProgramFiles=C:\Program Files\Common Files
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
CommonProgramW6432=C:\Program Files\Common Files
COMPUTERNAME=CFLGIS2
ComSpec=C:\Windows\system32\cmd.exe
FP_NO_HOST_CHECK=NO
HOMEDRIVE=C:
HOMEPATH=\Users\cherie.jarvis
JAVA_HOME=D:\Program Files\Java\jdk1.6.0_22
LOCALAPPDATA=C:\Users\cherie.jarvis\AppData\Local
LOGONSERVER=\\BATMAN
NUMBER_OF_PROCESSORS=16
ORACLE_HOME=D:\ORA11G\Administrator\product\11.1.0\db_1
OS=Windows_NT
Path=D:\app\Zekiah\product\11.1.0\client_2;D:\app\Zekiah\product\11.1.0\client_2
\bin;D:\Program Files (x86)\PHP\;D:\Ora11g_Client32\product\11.1.0\client_1\bin;
D:\Ora11g\administrator\product\11.1.0\db_1\bin;C:\Windows\system32;C:\Windows;C
:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\Program F
iles\ArcGIS\ArcSDE\ora11gexe\bin;D:\Program Files (x86)\MySQL\MySQL Server 5.1\b
in;D:\Program Files\Java\jdk1.6.0_22\bin;D:\Software\apache-ant-1.8.1\bin;D:\Pro
gram Files\TortoiseSVN\bin
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
PHPRC=D:\Program Files (x86)\PHP\
PROCESSOR_ARCHITECTURE=AMD64
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 44 Stepping 2, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=2c02
ProgramData=C:\ProgramData
ProgramFiles=C:\Program Files
ProgramFiles(x86)=C:\Program Files (x86)
ProgramW6432=C:\Program Files
PROMPT=$P$G
PSModulePath=C:\Windows\system32\WindowsPowerShell\v1.0\Modules\
PUBLIC=C:\Users\Public
SDEHOME=D:\Program Files\ArcGIS\ArcSDE\ora11gexe\
SESSIONNAME=RDP-Tcp#0
SystemDrive=C:
SystemRoot=C:\Windows
TEMP=C:\Users\CHERIE~1.JAR\AppData\Local\Temp\2
TMP=C:\Users\CHERIE~1.JAR\AppData\Local\Temp\2
USERDNSDOMAIN=CFLHD.LOCAL
USERDOMAIN=CFLHD
USERNAME=Cherie.Jarvis
USERPROFILE=C:\Users\cherie.jarvis
VISUALSVN_SERVER=D:\Program Files (x86)\VisualSVN Server\
windir=C:\Windows

TNS:could not resolve the connect identifier specified

I am at the end of my rope and I would really appreciate some assistance.
I get the error: "TNS:could not resolve the connect identifier specified " from my ASP pages and "Warning: oci_connect() [function.oci-connect]: Error while
trying to retrieve text for error ORA-12154" when connecting from php pages.
I am trying to access these pages from the same server as the database.
I manage to connect to the database homepage, but only after I manually stop and start the database after a restart (why?).
I have been reading forums and I have been googling for days. I think this is what you guys need to know to be able to help me.
General information:
Oracle Database 10g Express Edition Universal
Windows Server 2003 Standard SP 1
IIS 6
PHP Version 5.1.2
ASP allowed "normal" scrips runs ok
Php Allowed "normal" scrips runs ok
system variable path
C:\oraclexe\app\oracle\product\10.2.0\server\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\php;C:\instantclient_10_2
(server has been rebooted since last editing)
IUSR_Curium has full control on following folders including subfolders:
c:\windows\temp
C:\oraclexe
C:\instantclient_10_2
IWAM_Curium
IUSR_Curium has full control on following folders including subfolders:
c:\windows\temp
C:\oraclexe
C:\instantclient_10_2
HTTP access is set to "Available from local server and remote clients"
All oracle related services except OracleJobSchedulerXE is set to Automatic and is in status started
I can ping curium and i get a response from the server's public IP-Adress
I can ping localhost and i get a response from 127.0.0.1
This is my connection in ASP:
Set OraConn = Server.CreateObject("ADODB.Connection")
Oraconn.ConnectionString = "Driver={Microsoft ODBC for Oracle};Server=xe;Uid=hr;Pwd=hr;"
ASP connection gives the following error:
Microsoft OLE DB Provider for ODBC Drivers error '80004005'
[Microsoft][ODBC driver for Oracle][Oracle]ORA-12154: TNS:could not resolve the connect identifier specified
/asptest/test.asp, line 5
This is my connection in php
$conn = oci_connect('hr', 'hr', 'xe');
PHP connection gives the following error:
Warning: oci_connect() [function.oci-connect]: Error while trying to retrieve text for error ORA-12154 in c:\Inetpub\wwwroot\index1.php on line 3
Error while trying to retrieve text for error ORA-12154
C:\>lsnrctl status
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 21-MAR-2006 22:09:01
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 21-MAR-2006 20:57:04
Uptime 0 days 1 hr. 11 min. 58 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\listener.ora
Listener Log File C:\oraclexe\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=curium)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=curium)(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
C:\>lsnrctl services
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 21-MAR-2006 22:11:39
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "XEXDB" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:38 refused:0 current:24 max:1002 state:ready
DISPATCHER <machine: CURIUM, pid: 1972>
(ADDRESS=(PROTOCOL=tcp)(HOST=curium)(PORT=1045))
Service "XE_XPT" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1 refused:0 state:ready
LOCAL SERVER
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1 refused:0 state:ready
LOCAL SERVER
The command completed successfully
C:\>tnsping XE
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 21-MAR-2
006 22:14:10
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = curium)(
PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = XE)))
OK (10 msec)
C:\>sqlplus system/xxxxx as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Ti Mar 21 22:15:38 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
C:\>sqlplus hr/hr@XE
SQL*Plus: Release 10.2.0.1.0 - Production on Ti Mar 21 22:15:21 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
C:\>sqlplus "/ as sysdba"
SQL*Plus: Release 10.2.0.1.0 - Production on Ti Mar 21 22:15:02 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
Litener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = curium)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
sqlnet.ora
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES = (nts)
tsnames.ora
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = curium)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
Sorry for the long post....
Best regards
Roy-Christian Natland
Norway

Great post - it has nearly everything needed for diagnosis. Well done.
The database is working, and the listener is listening. The successful tnsping to XE shows me that the client subsystem (at least in the oraclexe) path is set up correctly.
However, two other non-oracle clients (ASP and PHP) cannot see the definition for the XE server. This suggests to me that something is pointing them to another Oracle client software set up
I note that you have C:\instantclient_10_2 in your path - so presumably you had/have installed Instant Client on this machine as well ?
Given that you are on the server box, I don't think you need the Instant Client set up. It's possible that this is what is misdirecting the other clients you are suing. Try taking this out of your path.
If that doesn't work, can you provide the output of a SET command issued from the command line.

ORA-12154: TNS:could not resolve the connect identifier speci

Getting this Error on our new windows 7 64bit OS
i am running both in the App and Ora in the XP compatibility mode.
A database error occurred in OCILogon (-1).
ORA-12154: TNS:could not resolve the connect identifier specified
<null>
The debug Console give's the following message.
"App Debug Console enabled
(switched to code page 1252)
ORASP>orasp_oci_open: ORA-12154: TNS:could not resolve the connect identifier specified
I can make the conection to the db by Loging directly into the Oracle SQL using the same info as my sams.
the conection works fine on our old XP OS....
any idea what i have to do to get this to run on Windows 7
thanks

Hi,
1) Check the tnsnames.ora file you are using, verify that it is accessible.
Eg: On Unix:
- Check if you have a $HOME/.tnsnames.ora file - This will be
used in addition to 'tnsnames.ora'.
- Check TNS_ADMIN is set in your environment.
- There is a readable tnsnames.ora file in $TNS_ADMIN
2) Ensure that the tnsnames.ora file contains a line of the form
'alias=(...)' for the alias you are specifying.
Aliases are NOT case sensitive.
3) Make sure that there are no mismatched parentheses in the
tnsnames.ora file.
     4) Even if TNS_ADMIN is set SQL*Net looks in other locations for
     configuration files. Check the default directories for old (or bad)
     copies of TNS_NAMES.ORA. Eg: /etc, /var/opt/oracle,
     $ORACLE_HOME/network/admin
5) Check the default domain name being used, and the path used to
locate aliases, in the SQLNET.ORA file.
The default domain is specified in the NAMES.DEFAULT_DOMAIN
parameter - this is appended to the alias specified in the
connect string if there is no domain given.
Eg: If NAMES.DEFAULT_DOMAIN=mydom.uk
and a connect to "scott/tiger@mydb" is requested
SQL*Net will look for the alias "mydb.mydom.uk"
If NAMES.DIRECTORY_PATH is also specified this determines where
SQL*Net looks for the alias expansion.
6) If none of these show an error enable client side tracing
at level 16 and see what has been written to the client trace
file. There list of aliases in the trace file under the heading
'TNS.NAMES.ORA TABLE HAS THE FOLLOWING CONTENTS'.
7) If ORA-12154 is returned when selecting over a database link from a
client check that the alias in the link can be resolved in the
tnsnames.ora file ON THE SERVER.
8) If you are connecting from a login dialog box, verify that you are
not placing an "@" symbol before your connect net service name.
9) When going from Windows to Linux/Unix platforms,
you can see <carriage return> <new line> characters at the
end of each line instead of <new line> <new line>. Be sure you
use ascii mode when ftp'ing this between Windows and Linux/Unix.
Regards,
Kal

Unable to resolve ORA-12154: TNS:could not resolve the connect identifier specified

Hi Friends,
I am unable to resolve ORA-12154: TNS:could not resolve the connect identifier specified, error:
C:\Windows\system32>sqlplus scott/tiger@ORADATA
SQL*Plus: Release 11.2.0.1.0 Production on Sun Feb 2 13:46:10 2014
Copyright (c) 1982, 2010, Oracle. All rights reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
SQL> select database_name from v$database;
DATABASE_NAME
ORADATA
SQL> select instance_name from v$instance;
INSTANCE_NAME
oradata
tnsnames.ora
============
ORADATA =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL=TCP)(HOST=himanshu-PC)(PORT=1521))
    (CONNECT_DATA =
(SERVICE_NAME = oradata)
(SERVER = DEDICATED)
listener.ora
=========
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = himanshu-PC)(PORT = 1521))
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = ORADATA)
      (ORACLE_HOME = G:\app\himanshu\product\11.2.0\dbhome_1)
      (SID_NAME = oradata)
sqlnet.ora
========
SQLNET.AUTHENTICATION_SERVICES = (NTS)
C:\Windows\system32>lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 02-FEB-2014 13:53:37
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=himanshu-PC)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Production
Start Date                02-FEB-2014 13:29:35
Uptime                    0 days 0 hr. 24 min. 6 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   G:\app\himanshu\product\11.2.0\dbhome_1\network\admin\listener.ora
Listener Log File         g:\app\himanshu\diag\tnslsnr\himanshu-PC\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=himanshu-PC)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
Services Summary...
Service "ORADATA" has 2 instance(s).
Instance "ORADATA", status UNKNOWN, has 1 handler(s) for this service...
Instance "oradata", status READY, has 1 handler(s) for this service...
Service "ORADATAXDB" has 1 instance(s).
Instance "oradata", status READY, has 1 handler(s) for this service...
The command completed successfully
Kindly guide whats wrong with my configuration.

ORADATA =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL=TCP)(HOST=himanshu-PC)(PORT=1521))
    (CONNECT_DATA =
(SERVICE_NAME = oradata)
(SERVER = DEDICATED)
Try editing the tnsnames.ora file to check there is any junk characters around the tns entry(shown in RED) and then try pining the tns from CMD as
tnsping ORADATA.

ORA-12154: TNS:could not resolve the connect identifier specified Error in Integration Service Catalogs

Hi guys,
I tried to execute a package with Oracle Data Source from Integration Services Catalogs and I got the following error.
ORA-12154: TNS:could not resolve the connect identifier specified
The package runs fine from the SSIS project but once I deploy to SSIS Catalog it fails to run. I need help!
Thanks
me

Hello ,
The ORA-12154 is a very common error, always related to your local copy of the tnsnames.ora file, your listener configuration and your database name aliases.
Make sure that your listener is listening for the same service name that you are using.
Your service name might have an alias, so check for global (world) entries and local entries. Check:
$ORACLE_HOME/network/admin/tnsnames.ora
Check your global_name setting with this SQL:
select * from global_name;
Ref :
http://www.dba-oracle.com/t_ora_12154_tns_resolve_service_name.htm
Ahsan Kabir Please remember to click Mark as Answer and Vote as Helpful on posts that help you. This can be beneficial to other community members reading the thread. http://www.aktechforum.blogspot.com/

ORA-12154: TNS:could not resolve the connect identifier specified (sqlplus)

Hi All,
I don't know if this has ever been posted, but since I've spent a week figuring it out (no joke, a week), I thought I would post it so that no one else has to waste this much time.
"ORA-12154: TNS:could not resolve the connect identifier specified" from what I've seen on this site is a major problem for a lot of people, but I did not find a reference to my specfic problem.
FYI--
My Database is called "ordidm"
userID: SYSMAN
password: p@ssw0rd
My specific issue was the following:
I can....
- Connect to the database via the client "admin assstant" GUI in Windows while supplying the userID and password using the "Database Authentication".
- Connect via sqlplus as "/as sysdba"
- "tnsping oraidm" passes works just fine.
I CANNOT....
- connect to oraidm at the dos prompt by using sqlplus, regardless of whether or not I supply all the user authentiocation information and db name on one line, or...if I just type "sqlplus" at the command prompt and then enter the userID and password when prompted. Every time I get the "ORA-12154: TNS:could not resolve the connect identifier specified" error message.
Ready for this?? (some may have guessed this already) The problem is the "@" in my password. After looking closely at the trace logs, I noticed that one of the entries was...
[09-MAR-2009 08:23:12:921] nnftrne: Original name: ssw0rd
Remember that the format for connecting on one line at the dos prompt is
C:/> sqlplus SYSMAN/p@ssw0rd oraidm
or you can do the following...
C:\Documents and Settings\Administrator.WIN2K3>sqlplus
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Mar 9 09:08:50 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Enter user-name: scott
Enter password:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL>
(BTW-I just started using the "scott" ID because from what I understand, changing the SYSMAN userID password is kind of a pain. Figured just using "scott" ID would be easier to test)
So of course what it's doing is counting everything after the first "@" as the database name...which of course it can't find in the tnsnames.ora file. Also, contrary to some other posts I found here and there, enclosing the userID and/or passowrd in quotes does not do any good. Apparently, even when using the 2nd method...in the background, the end result is it must pass the whole thing as one long string much like in the 1st method (as you will get the same truncated "Original Name" of "ssw0rd" in the log)
So...the question is, why does Oracle even allow "@" in the password if it will become an issue with sqlplus??? Also, if you can't (or shouldn't) use it, why isn't it documented somewhere? At the least I would expect the installer to at least warn you ahead of time that an "@" is not suggested. I don't remember it being there. Maybe it's just me and I'm just missing this info somewhere
I sincerely hope this saves someone else a week of their life. ;-)
-Eric

user8100001 wrote:
Hi All,
I don't know if this has ever been posted, but since I've spent a week figuring it out (no joke, a week), I thought I would post it so that no one else has to waste this much time.
"ORA-12154: TNS:could not resolve the connect identifier specified" from what I've seen on this site is a major problem for a lot of people, but I did not find a reference to my specfic problem.
FYI--
My Database is called "ordidm"
userID: SYSMAN
password: p@ssw0rdThere are restrictions from oracle side how should password look:
Passwords can be from 1 to 30 characters.
The first character in an Oracle password must be a letter.
Only letters, numbers, and the symbols “#”, “_” and “$” are acceptable in a password.
And password must not be a reserved word (look into v$reserved_words).
And as You can see sysman password containt "@" - this is not allowed.
>
My specific issue was the following:
I can....
- Connect to the database via the client "admin assstant" GUI in Windows while supplying the userID and password using the "Database Authentication".
- Connect via sqlplus as "/as sysdba"
- "tnsping oraidm" passes works just fine.
I CANNOT....
- connect to oraidm at the dos prompt by using sqlplus, regardless of whether or not I supply all the user authentiocation information and db name on one line, or...if I just type "sqlplus" at the command prompt and then enter the userID and password when prompted. Every time I get the "ORA-12154: TNS:could not resolve the connect identifier specified" error message.
Ready for this?? (some may have guessed this already) The problem is the "@" in my password. After looking closely at the trace logs, I noticed that one of the entries was...
[09-MAR-2009 08:23:12:921] nnftrne: Original name: ssw0rd
Remember that the format for connecting on one line at the dos prompt is
C:/> sqlplus SYSMAN/p@ssw0rd oraidAnd here You can see why this symbol is restricted as full syntax for sqlplus in this case will be:
sqlplus username/password@oraidm
but in Your case @symbol already is in password.
Here can be used a small trick
sqlplus sysman/"p@ssw0rd"@oraid
>
or you can do the following...
C:\Documents and Settings\Administrator.WIN2K3>sqlplus
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Mar 9 09:08:50 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Enter user-name: scott
Enter password:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL>
(BTW-I just started using the "scott" ID because from what I understand, changing the SYSMAN userID password is kind of a pain. Figured just using "scott" ID would be easier to test)
So of course what it's doing is counting everything after the first "@" as the database name...which of course it can't find in the tnsnames.ora file. Also, contrary to some other posts I found here and there, enclosing the userID and/or passowrd in quotes does not do any good. Apparently, even when using the 2nd method...in the background, the end result is it must pass the whole thing as one long string much like in the 1st method (as you will get the same truncated "Original Name" of "ssw0rd" in the log)
So...the question is, why does Oracle even allow "@" in the password if it will become an issue with sqlplus??? Also, if you can't (or shouldn't) use it, why isn't it documented somewhere? At the least I would expect the installer to at least warn you ahead of time that an "@" is not suggested. I don't remember it being there. Maybe it's just me and I'm just missing this info somewhereActually Oracle is not allowing this if You will just try to
alter user scott identidified by p@ssword
You will get error message (ORA-00922: missing or invalid option), but You can
alter user scott identified by "p@ssword" - and that will work.
These double quotes will allow to overide Oracle restrictions.

Frmcmp_batch.sh ORA-12154: TNS:could not resolve the connect identifier spe

Hi
[applerpp@solocupmx admin]$ frmcmp_batch.sh module=/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/WIPMVAPI.pll userid=apps/apps output_file=/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/WIPMVAPI.plx module_type=library compile_all=special
Forms 10.1 (Form Compiler) Version 10.1.2.3.0 (Production)
Forms 10.1 (Form Compiler): Release - Production
Copyright (c) 1982, 2005, Oracle. All rights reserved.
PL/SQL Version 10.1.0.5.0 (Production)
Oracle Procedure Builder V10.1.2.3.0 - Production
Oracle Virtual Graphics System Version 10.1.2.0.0 (Production)
Oracle Multimedia Version 10.1.2.0.2 (Production)
Oracle Tools Integration Version 10.1.2.0.2 (Production)
Oracle Tools Common Area Version 10.1.2.0.2
Oracle CORE 10.1.0.5.0 Production
ORA-12154: TNS:could not resolve the connect identifier specified
Regards,
Guido

Hi,
With the adadmin I can see this error:
/data/erpp/R12.1.3/apps/tech_st/10.1.2/bin/frmcmp_batch module=/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/CSDMASSN.pll userid=APPS/***** output_file=/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/CSDMASSN.plx module_type=library batch=yes compile_all=special
ERROR generating library "resource/CSDMASSN.plx" from input file
/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/CSDMASSN.pll
Results of library generation:
(from file /data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/CSDMASSN.err
AD Worker has deleted the original .err file)
FRM-30312: Failed to compile the library.
Generated 0 files successfully.
Generated 0 files with non-fatal warnings.
Generated 1 files with fatal errors.
adfrmgen is exiting with status 1
But manually I don't have problrems
/data/erpp/R12.1.3/apps/tech_st/10.1.2/bin/frmcmp_batch module=/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/CSDMASSN.pll userid=apps/apps output_file=/data/erpp/R12.1.3/apps/apps_st/appl/au/12.0.0/resource/CSDMASSN.plx module_type=library compile_all=special
Compiling Package Body VERSION_CONTROL......
Compiling Procedure Body SN_CAPTURE_ITEM_EVENT......
Compiling Procedure Body SN_CAPTURE_EVENT......
Compiling Procedure Body CONTROL_SN_CAPTURE_ITEM_EVENT......
Done.
Why, What Do you think?
Regards,
Guido

RMAN-00554, RMAN-04005, ORA-12154: TNS:could not resolve the connect identifier specified

Hi Gurus,
I need your help!
I am implementing dataguard through RMAN, where my primary database is mydb and my standby database is orcl. I am pasting step by step process and atlast the error message which I am getting. Please do help me to resolve it.
[oracle@localhost ~]$ . oraenv
ORACLE_SID = [orcl] ? mydb
The Oracle base for ORACLE_HOME=/u01/home/oracle/product/11.2.0/db_1 is /u01/app/oracle
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Jan 5 09:24:56 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select db_unique_name, database_role, open_mode from v$database;
DB_UNIQUE_NAME                 DATABASE_ROLE    OPEN_MODE
mydb_un                        PRIMARY          READ WRITE
SQL> show parameter instance_name
NAME                                 TYPE        VALUE
instance_name                        string      mydb
SQL> show parameter service_names
NAME                                 TYPE        VALUE
service_names                        string      mydb_un
SQL> !
[oracle@localhost ~]$ . oraenv
ORACLE_SID = [oracle] ? orcl
ORACLE_HOME = [/home/oracle] ? /u01/app/oracle/product/11.2.0/dbhome_1
The Oracle base for ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1 is /u01/app/oracle
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Sun Jan 5 09:20:04 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select host_name, status from v$instance;
HOST_NAME                                                        STATUS
localhost.localdomain                                            STARTED
SQL> show parameter instance_name
NAME                                 TYPE        VALUE
instance_name                        string      orcl
SQL> show parameter service_names
NAME                                 TYPE        VALUE
service_names                        string      orcl_un
SQL> !
[oracle@localhost ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 05-JAN-2014 09:27:44
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
   Linux Error: 2: No such file or directory
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                05-JAN-2014 08:17:31
Uptime                    0 days 1 hr. 10 min. 15 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Log File         /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521)))
Services Summary...
Service "mydbXDB" has 1 instance(s).
Instance "mydb", status READY, has 1 handler(s) for this service...
Service "mydb_un" has 1 instance(s).
Instance "mydb", status READY, has 1 handler(s) for this service...
Service "orcl_un" has 1 instance(s).
Instance "orcl", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
[oracle@localhost ~]$ tnsping mydb
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 05-JAN-2014 09:27:54
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
/u01/home/oracle/product/11.2.0/db_1/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mydb_un)))
OK (0 msec)
[oracle@localhost ~]$ tnsping orcl
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 05-JAN-2014 09:28:03
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
/u01/home/oracle/product/11.2.0/db_1/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl_un)))
OK (0 msec)
[oracle@localhost admin]$ more listener.ora
# listener.ora Network Configuration File: /u01/home/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = mydb_un)
      (ORACLE_HOME = /u01/home/oracle/product/11.2.0/db_1)
      (SID_NAME=mydb)
    (SID_DESC =
      (GLOBAL_DBNAME = orcl_un)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = orcl)
ADR_BASE_LISTENER = /u01/app/oracle
[oracle@localhost admin]$ more tnsnames.ora
# tnsnames.ora Network Configuration File: /u01/home/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
MYDB =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = mydb_un)
ORCL =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl_un)
[oracle@localhost ~]$ rman target sys/engineer@mydb auxiliary sys/engineer@orcl
Recovery Manager: Release 11.2.0.1.0 - Production on Sun Jan 5 09:30:59 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-12154: TNS:could not resolve the connect identifier specified
[oracle@localhost ~]$
Please let me know why I am getting this error if everything is fine above.
Regards,
Michel

Here's your issue
(HOST=localhost.localdomain)
If you are going to use "localhost" at least fake it by adding an entry in your /etc/hosts files
Example ( add to both servers so they can see each other )
192.168.0.20               primary.localdomain   primary
192.168.0.21               standby.localdomain   standby
Does the "hostname" return localhost.localdomain? Setup something so RMAN has something to connect to.
The "/etc/hosts" file must contain a fully qualified name for the server.
<IP-address> <fully-qualified-machine-name> <machine-name>
localhost.localdomain is 127.0.0.1, you don't want that.
Best Regards
mseberg

Ora-12541 ORA-12154: TNS:could not resolve the connect identifier specified

I am having trouble obtaining an ODBC connection from a client XE to a server XE. ora-12541 ORA-12154: TNS:could not resolve the connect identifier specified
I am new to Oracle.
I have oracle client XE running on my XP pro box.
I have oracle server XE running on an XP pro box on the LAN.
I am trying to connect to the oracle database using ODBC from my client box.
I can logon to the oracle server box through HTTP.
I can logon to the oracle server box by using a connection string in "Command Line SQL" from my client computer. I can then run queries on my client computer. (select * from global_name)
I cannot setup an ODBC connection in windows which will connect to the oracle server box from my client box. (I have no trouble connecting to MSSQL databases).
I can ping my server by hostname or ip address. Both ok.
I can run tnsping XE on the server box and it works. I believe this tells me my server listener is working.
I cannot run tnsping on my client box as it is not included in the download for Client XE.
Windows firewall is turned off on both machines.
I have been reading all over the web for and all attempts fail. Most all help says use Oracle Net Manager or some such tool. They then say go to start\programs\oracle….etc. There is no type program included on the server or the client software. I would like to know here I can download it.
XEClint\Bin is the firs entry in my PATH. The tnsnames.ora, sqlnet.ora, and listner.ora files are there. I have been to http://www.oracle.com/technology/software/products/database/xe/files/install.102/b25143/toc.htm several times. My tnsnames.ora are identical to the ones in the example except for the host =.
I have 3 tnsnames.ora files on my computer:
Directory of c:\
04/03/2008 11:43 AM 635 tnsnames.ORA
Directory of c:\Documents and Settings\All Users\Application Data\Microsoft\Net
work
04/03/2008 11:43 AM 635 tnsnames.ORA
1 File(s) 635 bytes
Directory of c:\XEClient\bin
04/03/2008 11:43 AM 635 tnsnames.ORA
1 File(s) 635 bytes
They are all identical.
When I ran lsnrctl status on the server the results were the same as found in other articles in the web site. Default service XE
I have the Oracle in XE Client driver in my windows ODBC driver list of the client box. And other Oracle drivers.
It appears I am lost.
Any help would be appreciated.
Randy

I cannot setup an ODBC connection in windows which will connect to the oracle server
box from my client box. (I have no trouble connecting to MSSQL databases).How you tryed to do that?
On which step you have problems?

DNS Set Up system throw as ORA-12154; TNS :could not resolve the connect id

Hi,
While i'm creating DNS set up system throws below message
unable to connect
SQLState=08004
DNS Set Up for instantclient(win32-10.2.0.4) system throw as ORA-12154; TNS :could not resolve the connect identified specified.
operationg system:xp
dir path:C:\Oracle\instantclient10_2
TNSNAMES.ORA(C:\Oracle\instantclient10_2\NetWork\ADMIN) Contants
YourTNSName =sankar
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =localhost)(PORT =1521))
(CONNECT_DATA =
(SID =sankar)
(SERVER = DEDICATED)
dir contains:
sqresus.dll,
sqresja.dll
sqoras32.dll
sqora32.dll
oraociei10.dll
oraocci10.dll
orannzsbb10.dll
ojdbc14.jar
ocijdbc10.dll
ociw32.dll
oci.dll
classes12.jar

user7197586 wrote:
Hi
I have been created one DBLink it's created but when i am trying to access the data through the link it's raise error as
"ORA-12154: TNS:could not resolve the connect identifier specified"
CREATE
PUBLIC DATABASE LINK
Vrd_tcplink
CONNECT TO
"SAPVRD"
IDENTIFIED BY
"manager123"
USING
'VRD_TCP.WORLD'
created this above dblink
Kindly Suggest to wau out.
Regards,
Sachin
When using a dblink, the database with the link is acting as a client to the remote database ... exactly like sqlplus running on the db server.
read: http://edstevensdba.wordpress.com/2011/02/26/ora-12154tns-03505/ ora-12154tns-03505

Ora-12154:TNS:Could not resolve the connect identifier specified

Helo
I face this error when i tried to connect to the database.
i have been installed 11g database on machine with database name 'hrall'
But when i tried to connect to the database it's shows me error "ora-12154:TNS:Could not resolve the connect identifier specified"
when i put the old database entry an that machine and try ti connect it's connect Successfully.
Kindly Suggest
Regards,
Sachin

Hi Error not solved yet
i am giving you my system details as follow -
OS Name : Microsoft(R) Windows(R) Server 2003 Standard x64 Edition
System Type: x64-based PC
My tnsentry also right
posted as follow -
HRALL.voltasworld.com =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ps-win-hrall.voltasworld.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = hrall)
listener.ora file
# listener.ora Network Configuration File: F:\app\dbadmin\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = F:\app\dbadmin\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:F:\app\dbadmin\product\11.2.0\dbhome_1\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = ps-win-hrall.voltasworld.com)(PORT = 1521))
ADR_BASE_LISTENER = F:\app\dbadmin
Kindly Suggest
Regards
Sachin

SQL Developer 2.1.0.63 duplicate TNS names displayed in the Connection Type

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