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........

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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.

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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

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