Question

Connect to Oracle in VB.net

Asked by: warrenlyle

How do I connect to Oracle version 92062 using ODBC in vb.net?  I tried this ConnectionString:
"Driver={Oracle in v92062};Server=<servername>;Uid=<userid>;Pwd=<pass>"

I keep getting this error message: "ORA-12560: TNS:protocol adapter error" and
"Driver's SQLSetConnectAttr failed"
Do I need to have tnsnames.ora file set up and if so, how?

When I connect in MS Access using system DSN, it connects fine.
Operating system is Windows XP.

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Asked On
2007-07-10 at 09:40:06ID22686439
Tags

oracle

,

connect

Topic

Oracle 9.x

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: _TAD_Posted on 2007-07-10 at 11:50:45ID: 19456646

If you are going to connect to Oracle you *MUST* have a TNSNames.ora file set up and configured.  This is always a requirement.

The reason this works with MS Access so easily is because Windows provides all of the drivers and connections by default.  When it comes to Oracle, you have to make sure the tns-names are set up manually.

 

by: _TAD_Posted on 2007-07-10 at 11:56:59ID: 19456706

Hey... found this:
[Connect to Oracle withOUT tnsnames ora - creates a connection string with the contents of the ora file in the conn str)
SERVER=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort))(CONNECT_DATA=(SERVICE_NAME=MyOracleSID)));uid=myUsername;pwd=myPassword;


<otherwise>


Connect to Oracle using ODBC

1) Install Oracle client
2) Configure TNS Names to connect to Oracle database through oracle client - test connection here
3) Go to start> settings> control panel> administrator tools> ODBC connections - add a new ODBC connection using oracle driver - test here
4) Using .Net create a connection string that uses the ODBC connection that you just created


http://www.connectionstrings.com/

Driver={Microsoft ODBC for Oracle};Server=myServerAddress;Uid=myUsername;Pwd=myPassword;

 

by: ogmfPosted on 2008-09-25 at 07:48:37ID: 22569778

We found a solution based off of links and other notes posted here: We have an ORACLE 10g R2 database and are using Microsoft Visual Basic version 6.0. Our application needs to connect to ORACLE using "TRUSTED CONNECTIONS" which are Oracle External Logins. This means the user does not give a password or username to sign into the Oracle account. We had problems creating the connection string to connect to Oracle from Visual Basic. We finally found the solution and wanted to post this so others could use it:

'Oracle connection string in VB:

"PROVIDER=MSDAORA; DATA SOURCE=MyOracleServerName; USER ID=/ ; PW=;"

20120131-EE-VQP-002

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