Unable to connect, ORA-12154, the installation routine to find ODBC Microsoft errors

Hi all

I have a 64-bit Windows 7 Enterprise SP1 system and I wanted to be able to connect to an oracle database server. However, I am facing a problem with the ODBC configuration.

I currently installed both below in... product\11.2.0\client_1 folder:
1 oracle Database 11 g Release 2 (11.2.0.1.0) Client for Microsoft Windows (x 64) - http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html
2 64 - bit components (ODAC) data access Oracle - http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html

I launched the ODBC data sources administrator and added a user DSN but gave rise to two errors:
1. the Setup for the Microsoft ODBC driver ODBC routines oracle is not found. Please you reintall the pilot.
2. the specified DSN contains a mismatch of architecture between the driver and the application.

In addition to that, if I go to the system DSN tab and tried to test the connection it gives me an error:
1. cannot connect SQLState = 08004 [Oracle] [ODBC] [Ora] ORA-12154: TNS: can not solved the specified identifier.

Anyone can guide me please thanks to this? Thanks in advance!

Published by: VTech on February 26, 2013 14:13

VTech wrote:
Hi all

I have a 64-bit Windows 7 Enterprise SP1 system and I wanted to be able to connect to an oracle database server. However, I am facing a problem with the ODBC configuration.

I currently installed both below in... product\11.2.0\client_1 folder:
1 oracle Database 11 g Release 2 (11.2.0.1.0) Client for Microsoft Windows (x 64) - http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html
2 64 - bit components (ODAC) Oracle data access - http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html

It is enough that one of them (the other should be enough).

I launched the ODBC data sources administrator and added a user DSN but gave rise to two errors:
1. the Setup for the Microsoft ODBC driver ODBC routines oracle is not found. Please you reintall the pilot.

"Microsoft ODBC for Oracle" is a different provider than 'Oracle ODBC'. Make sure that you do not use Microsoft one.

2. the specified DSN contains a mismatch of architecture between the driver and the application.

This can happen if you mix 32-bit and 64-bit. There are two ODBC Control Panel in Windows 7:
-64-bit, one is that of the Panel
-the 32 bit one is c:\windows\syswow64\odbcad32.exe

Because you use an Oracle 64-bit driver, you must use the 64-bit ODBC Administrator and 64-bit applications. If you try to use this ODBC connection with a 32-bit application, you will need to use the 32-bit ODBC (and the driver Oracle 32-bit).

In addition to that, if I go to the system DSN tab and tried to test the connection it gives me an error:
1. cannot connect SQLState = 08004 [Oracle] [ODBC] [Ora] ORA-12154: TNS: can not solved the specified identifier.

Well it actually means that it loads correctly, Oracle is something. You must add an entry for the server you want to connect in tnsnames.ora, located in the folder \network\admin inside your Oracle client installation. Because it looks like someone else set up the server that you want to connect, your DBA should be able to provide the information that is written to the file.

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