使用VB.net连接到Oracle

Question

I am using Oracle 11g, And I am trying to get it to connect to VB.net. I have installed the Oracle data provider. I have access to the tnsnames.ora under the samples folder. However I for some reason cannot locate the listener.ora file. When trying to connect to the database I get the following error: ORA-12560: TNS: protocol adapter error. I have tried to get my database running through the services but there isn't one which shows my database.

Hope I was clear and I would any suggestions why there isn't a listener file and why this error is occurring. I have tried through tutorials, using this link http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/dotnet/GettingStartedVBVersion/GettingStartedNET_VBVersion.htm and also used the wizard but still get the same error message.

Answer 1

OK.Install the ODAC with odt for your database.(32 bit).Don't edit and tns details and add the referenece to the oracledataaccess.dll to your project. Import these two

Imports Oracle.DataAccess.Client
Imports Oracle.DataAccess.Types

Then add the lines

Dim oradb As String = "Data Source=*your tns entry goes here*" + "User Id=uname;Password=pass;"
Dim conn As New OracleConnection(oradb)
conn.open()

This did the job for me. If it works ,add the data in your tns file as it is not advised to keep the connection string in the code.