CODEWITHSUNDEEP
c#oracle-databaseodbc
Wulala2006
Wulala2006

Reputation: 21

using odbc to connect to Oracle database in c#

I'm trying to write a tool in c# which will connect to Oracle database and I'm required to use ODBC.

If I use the following code:

using System.Data.Odbc;
string str1 = "DATA SOURCE=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=abcd.efgh.net)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=service_name)));USER ID=user_id;PASSWORD=qassword";
OdbcConnection coon = new OdbcConnection();
coon.ConnectionString = str1;
coon.Open();

I get the error message:

An unhandled exception of type 'System.Data.Odbc.OdbcException' occurred in System.Data.dll
Additional information: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

even if I change the connection string to:

string str2 = "Driver={Oracle in OraClient12home1};DATA SOURCE=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=abcd.efgh.net)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=service_name)));USER ID=user_id;PASSWORD=qassword";

I get the same error message. So I guess the problem is not the "Driver = {...}" part? But what did I get wrong in the "DATA SOURCE" part?

Thank you.

Upvotes: 1

Views: 10829

Answers (2)

Siddiqui
Siddiqui

Reputation: 21

Try this

        using System.Data.Odbc;

        String connectionString = "Dsn=HP5ODBC;uid=system;pwd=manager";          
        OdbcConnection coon = new OdbcConnection();
        coon.ConnectionString = connectionString;
        coon.Open();
        MessageBox.Show(coon.State.ToString());

Upvotes: 2

Wernfried Domscheit
Wernfried Domscheit

Reputation: 59557

Try 

Driver={Oracle in OraClient12home1};DBQ={(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=abcd.efgh.net)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=service_name)))};UID=user_id;PWD=qassword";

instead of 

Driver={Oracle in OraClient12home1};DATA SOURCE=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=abcd.efgh.net)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=service_name)));USER ID=user_id;PASSWORD=qassword";

See Using the Oracle ODBC Driver: Format of the Connection String and/or Oracle in OraClient11g_home1 connection strings

Upvotes: 0

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