Ora-12154 vs. tns-03505

Since both ora-12154 and tns(ora)-03505 deal with not being able to locate a connect string in tnsnames (or other naming method), has anyone ever seen a good definition of exactly what differentiates between the two? What little variable would trigger the issuing of one error msg.vs. the other?
I know how to resolve them. The web is full of descriptions on resolving the problem (some of them are even valid! ;-) ). But I've never seen anything that would define why you would see an ora-12154 on time, and an tns-03505 another time.
Inquiring minds want to know! (Since this deals with published error codes, it's <i>somewhat</i> less arcane than how the archiver determines the "first" member of a redolog group! :-)

sybrand_b wrote:
IIRC only tnsping will produce tns-03505.
Sybrand Bakker
Senior Oracle DBACould be. I never picked up on any pattern of behavior before (thus my question). A simple test seems to bear that out:
With tnsping
[oracle@vmlnx01 ~]$ tnsping fubar
TNS Ping Utility for Linux: Version 10.2.0.4.0 - Production on 16-FEB-2011 16:33
Copyright (c) 1997, 2007, Oracle. All rights reserved.
Used parameter files:
/ora00/app/oracle/product/10.2.0/db_1/network/admin/sqlnet.ora
TNS-03505: Failed to resolve namesame connect string with sqlplus
[oracle@vmlnx01 ~]$ sqlplus scott/tiger@fubar
SQL*Plus: Release 10.2.0.4.0 - Production on Wed Feb 16 16:35:53 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
Enter user-name:

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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
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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
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USING
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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 using TOAD client

I try to using connect with remote database using TOAD client. My oracle version is 10.2g. I follow these instructions that specified on this link, instead of step 13, because i cant understand what they explain http://http://avangari.wordpress.com/remote-oracle-database-access-using-instant-client-and-toad/ . My Oracle TNS_ADMIN path is C:\oracle\product\10.2.0\db_1\network\ADMIN and ORACLE_HOME is C:\oracle\product\10.2.0\db_1. I found many question regarding this query, but i am not found my answer.

948021 wrote:
I try to using connect with remote database using TOAD client. My oracle version is 10.2g. I follow these instructions that specified on this link, instead of step 13, because i cant understand what they explain http://http://avangari.wordpress.com/remote-oracle-database-access-using-instant-client-and-toad/ . My Oracle TNS_ADMIN path is C:\oracle\product\10.2.0\db_1\network\ADMIN and ORACLE_HOME is C:\oracle\product\10.2.0\db_1. I found many question regarding this query, but i am not found my answer.
see: http://edstevensdba.wordpress.com/2011/02/26/ora-12154tns-03505/ (ora-12154 TNS:could not resolve the connect identifier specified)
And for background info
see: http://edstevensdba.wordpress.com/2011/02/09/sqlnet_overview/ (Help! I can’t connect to my database )
see: http://edstevensdba.wordpress.com/2011/02/16/sqlnet_client_cfg/ ( Help! I can’t connect to my database (part duex) )

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

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 ... for imported pl-sql function in Process Flow

Hi
I included in a process flow a PL-SQL function as user defined transformation.
This PL-SQL function resides in my source database, from where I imported it in OWB.
When I am trying the run the Process Flow (from control center manager) I get the following message upon executing that function.
ORA-12154: TNS:could not resolve the connect identifier specified
When I don't include that function my process flow works. Mappings in my process flow read from the same source database as where the function is.
So I don't think it is caused by a problem with tnsnames.ora..
Thanks in advance for anybodies help.
Hans

Hi Oleg,
Thanks for your reply. Indeed I didn't create a runtime repository.
However don't like to do that to for the source DB.
I wonder if I can get around that by executing a SQLplus script instead.
I tried this but my script does never complete when it is started from the process flow. If I run it in SQLplus it runs fine and completes instantly.
My script does:
update 1 column in one record of a table.
commit;
exit;
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ORA-12154: TNS:could not resolve... - sql plus works, env vars are set...

Hi,
I am getting this error message in my ASP.Net apps (namespace Oracle.DataAccess.Client) and any app that tries to use the Oracle Provider for OLE DB.
Error:
ORA-12154: TNS:could not resolve the connect identifier specified
Here is what I do know:
- My ORACLE_HOME is set to C:\oracle\product\11.1.0\client_1\
- My path has C:\oracle\product\11.1.0\client_1\network\admin;C:\oracle\product\11.1.0\client_1\bin;
- I installed Oracle Client 11g, previously 10g was working but one of the devs wanted to upgrade
- I can connect using sqlplus user/pass@tnsname
- I can test tns entries successfully in Net Manager
Here is what I don't know:
- When using OLE connections, why does Oracle Provider for OLE DB not pick up on the environment variables - sql plus seems to, that's why it works.
- In ASP.Net, why does the connection object from Oracle.DataAccess.Client not pick up the correct environment variables?
- How do the Oracle drivers pick up the location of the TNS names?
Thanks,
Michael
Edited by: user2750352 on 04-May-2009 07:51

Hi,
What "environment variables" are you referring to that you have set? You shouldnt have to set any, unless you're talking about TNS_ADMIN just to avoid having to configure multiple TNSNames.ora's if you have multiple homes.
Your PATH doesnt need to include OH\network\admin, but thats not hurting anything. PATH is for dll loading, not for finding config files.
Do you still have 10g installed? When you connect using sqlplus user/pass@tnsname, are you using 11g sqlplus? Or is that coming from the 10g client? Multiple homes arent aware of each other, so if you have a 10g home and an 11g home, you'd have to configure tnsnames.ora for both (or use tns_admin).
As far as I know, the client software picks up tnsnames.ora by checking:
1) the local working directory
2) the tns_admin directory
3) the network\admin directory of the client home being used.
Hope it helps,
Greg

TNS Error : ORA-12154 unsing oo4o with VB

In VB6, using oo4o(Oracle InProc Server),
whin I run debuging mode with VB6 App, result is successfull.
But, compile this application, and execute EXE module,
error occur 'Cannot resolve TNS Name (ORA-12154)'.

Just make sure that the executable is not started from a directory path containing brackets (e.g. "C:\Program Files (x86)\MyApp\myapp.exe") but copy that executable to a directory path without brackets. The brackets in one of the directies in the path may lead to the Oracle exception "ORA-12154: TNS :could not resolve service name".

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.

Oracle Forms 11g - ORA-12154: TNS error

Okay, before I post my info, I searched and searched everywhere via Google, OTN, Experts-Exchange, etc...to try to figure this one out and I'm stumped. So here goes. I get the dreaded "*ORA-12154: TNS:could not resolve the connect identifier specified*" error. Here's my environment:
Server: Red Hat Enterprise Linux 5 version runs the following:
Oracle Database 11g (Rel 1): 11.2.0.10
Oracle Fusion Middleware Forms Server 11g (Rel. 11.1.1.2.0)
I can connect via SQL+ no problem
Client: My Windows XP Professional PC.
I can TNSPING the database SID no problem.
I can connect via SQL+ no problem
I can connect via TOAD to the db no problem
I can connect to Oracle Enterprise Manager via the web interface no problem
I do have 2 Oracle Homes (Oracle 8.0.6, Oracle 11.1.0.1) on my PC. Currently the current home is the 11g one. I do have my paths on my PC setup fine.
The problem is when I try to run a sample form via the web I created, the login prompt comes up and I enter my username/password/database SID and that's when I get the error. Any clues as to what I should look for? Eventually this will be an app that all the users will be accessing and they shouldn't have to worry about having anything setup on their PCs.
Thanks

ashosheh wrote:
Also keep in mind that tnsnames.ora file in forms 11g is under $ORACLE_INSTANCE/configBINGO!!!!!!!!!! We have a winner! Thank you so much "ashosheh". I looked and there WAS a tnsnames in the directory "Oracle/Middleware/asinst_1/config"....*BUT* it was a sample one. Meaning there was no entry just comments showing you a sample version of a TNS Names entry. So I copied my entry from another TNSNAMES and put it in there and voila...I was able to connect.
Thank you very much. This was driving me nutz all of last week!
Gio

ORA-12154: TNS:could not resolve service name

Hi Guru's
i applied Maintainacepack 3480000 patch on my application for upgrading 11.5.7 to11.5.10.2, after completion of patch, I run the autoconfig it has given bellow error, please anybody can help me, i need to finish my task immediately, please provide me the solution.
autoConfig Profile Phase
Running Profile Process 1 of 1 for CLN_TOP
Executing script in InstantiateFile:
/sgmtemp/prodcomn/admin/install/MSBEP004_dcpsr006osm/clnadmprf.sh
script returned:
clnadmprf.sh started at Sun Feb 17 06:24:13 WST 2008
The environment settings are as follows ...
ORACLE_HOME : /sgmtemp/prodora/8.0.6
ORACLE_SID :
TWO_TASK : msbep004
PATH : /sgmtemp/prodora/iAS/Apache/perl/bin:/sgmtemp/prodora/8.0.6/bin:/sgmtemp/prodappl/fnd/11.5.0/bin:/sgmtemp/prodappl/ad/11.5.0/bin:/sgmtemp/prodcomn/util/jre/1.1.8/bin:/sgmtemp/prodcomn/util/unzip/unzip::/sgmtemp/prodora/8.0.6/bin:/usr/bin:/usr/ccs/bin:/usr/sbin:/sgmtemp/prodora/iAS/Apache/perl/bin:/sgmtemp/prodora/iAS/Apache/perl/bin:/sgmtemp/prodora/8.0.6/bin:/sgmtemp/prodcomn/util/jre/1.1.8/bin:/sgmtemp/prodcomn/util/unzip/unzip:/sgmtemp/prodora/8.0.6/bin:/usr/bin:/usr/ccs/bin:/usr/sbin:/usr/java14/jre/bin:/usr/java14/bin:/usr/bin:/etc:/usr/sbin:/usr/ucb:/sgmtemp/prodappl/bin:/usr/bin/X11:/sbin:/usr/lpp/pd/bin:.
LD_LIBRARY_PATH : /sgmtemp/prodora/8.0.6/network/jre11/lib/aix/native_threads:/sgmtemp/prodappl/cz/11.5.0/bin:/sgmtemp/prodora/8.0.6/lib:/usr/dt/lib:/usr/openwin/lib
Executable : /sgmtemp/prodora/8.0.6/bin/sqlplus
SQL*Plus: Release 8.0.6.0.0 - Production on Sun Feb 17 06:24:13 2008
(c) Copyright 1999 Oracle Corporation. All rights reserved.
ERROR:
ORA-12154: TNS:could not resolve service name
clnadmprf.sh exiting with status 1
ERRORCODE = 1 ERRORCODE_END
.end std out.
thanks

Please Apply "Patch 5985992 - TXK AUTOCONFIG ROLLUP PATCH Q (JUL/AUG 2007)", run AutoConfig, and check then.

Fundamental Problem: ORA-12154: TNS:could not resolve service name

Hello,
I am faced with a fundamental problem:
ORA-12154: TNS:could not resolve service name
I can say with a high level of confidence that the TNSNAMES.ora configuration file is not the problem. My peer is using the exact same file with no issues. I am using the TOAD database utility to connect to the db host. Also, I have ORACLE_HOME defined and the file is located in /network/ADMIN.
Any ideas?

Hello,
Make sure your toad looking into right tnsnames.ora; also try this from command line after adding following entry to your tnsnames.ora.
sqlplus username/password@ECDEV
ECDEV =
(DESCRIPTION =
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        (PROTOCOL = TCP)
        (HOST = rscdd01) --> you can try ipaddress of your server name as well
        (PORT = 1521)
    (SDU = 8192)
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      (SERVICE_NAME =ECDEV)
      (INSTANCE_NAME=ECDEV)
)Edited by: OrionNet on Dec 23, 2008 2:22 PM

Data Services ORA-12154 - TNS - Entries o.k.!

Hi Experts!
There is a problem when executing a job:
- Windows Server Enterprise 2007 Service Pack2
- 64 - bit Operating - System (Business Objects Dataservices was installed in directory "C:\Programm Files (x86)" )
- Oracle Client ist installed on Server and Client
- all TNS - Entires are entered in tnsnames.ora - File (Client and Server)
- Source: Oracle 9i
- Target: Oracle 11g
- Designer 12.2.2.3
- JobServer 12.2.2.3
- JobEngine 12.2.2.3
- Repository 12.2.2.0000
In Designer - Tool we are able to preview Data (Source and Target) in Client AND Server, so TNS - Entries should be correct (Client and Server).
We have installed a Designer on Client AND Server, the problem and the behaviour is the same on both sides.
When executing the job this message appears:
"OCI call <OCIServerAttach> for connection <BOHAI_PROD> failed: <ORA-12154: TNS:could not resolve the connect identifier
specified>."
A TNSPing for TNS - Entries is o.k.! (Source and Target)
Any Help?
Thanks!

Hi,
I changed the Logon settings of the Data Services Windows - Service to "Local account".
The problem is solved.
Anyhow, can you tell me how to use TNS Listner Services. I don't konw this Service.
Thank you very much!
With kind regards!

MSDAORA,IIS,ORA-12154: TNS:could not resolve service name

Hi All,
I have a Web Service that coded in VS2008, using ORACLE DB(9i).
At a time the application working fine and I can access and do everything with database.
Some other time database server is down for scheduled maintenance. If I try to run the application at this point of time it will raise err "ORA-12154: TNS:could not resolve service name".
When i reset iis it start to work fine for a while.Then same problem occurs again.
My connection string is connectionString="provider=MSDAORA.1;data source=***;user id=***;password=***;"
is there any solution?
i tried that;
If theire is multiple copies of OCIW32.dll you have to make sure that there is only one copy of OCIW32.dll which should be in /Bin folder of the oracle home folder.
Add the IUSR_machine name account and the IWAM_machine name account to the Oracle home folder. Give both accounts full control.
Create empty file tnsnames.ora in same directory as aspnet_wp.exe,

Hi,
The issue doesnt make much sense on the surface at least. 12154 means the client couldnt figure out what you were referring to with your Data Source= entry. If the database was taken down, I'd expect an "oracle not available" or some other sort of error, as the client should have still be able to resolve the entry at least, even if the database wasnt up at the time.
What do you mean by "When i reset iis it start to work fine for a while.Then same problem occurs again."? The same problem meaning you get 12154 when you take the database down? Or you get 12154 without a db restart?
Are you using TNSNames.ora for client naming resolution, or something else (ldap, for example)?
Greg

Hi...Please help...Getting ORA 12154 TNS Listener could not resolve...

Hi,
I have just loaded Oracle 10g Rel 2 in Win 2003 Enterprise Edition.
But when I try to connect to sqlplus, I am getting ORA -12154 : TNS: Listener could not resolve the connect identified specified.
I have registered the database, the listener and tnsnames have been set correctly.
I have also set the Oracle Home environment variable.
Still getting the error.
Any help will be highly appreciated.
Thanks,

I agree
ORA-12145: (does not exist in the standard manuals)
ORA-12154: TNS:could not resolve the connect identifier specified
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
ORA-12541: TNS:no listener
It is pretty easy to fat-finger these 4 message numbers. As a result, when a person has the actual and complete error message and an error number for a different message, it is usually not a bad idea to use the actual message. (Based on transposing only 3 digits compared to typing over 50 characters correctly.)
In this case the OP has really bollixed things: Subject implies a true 12154, text in the thread is an actual 12514 but mentions 12154.
As a result, there are several potentially correct answers, depending on the interpretation of the question.
- sb92075 gave the correct answer based on the number
- I gave the correct answer based on the message in the thread
- Anurag and Ed gave the correct answer based on 'the question is not formed correctly'
Edited by: Hans Forbrich on Jan 24, 2010 7:13 AM
(BTW - ORA-12415 and ORA-12451 are the other permutations ... described http://download.oracle.com/docs/cd/B19306_01/server.102/b14219/e12400.htm#sthref3357)

Ora-12154 vs. tns-03505

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