unable to open the database connection using OracleClient and OracleDbVersion 11.2.0 64 bit

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C#

using System.Data.OracleClient;
	
string strDSNcon = "Data Source=myOracleDB;uid=uid;pwd=myPass;";
OracleConnection oraConn = new OracleConnection(strDSNcon);
oraConn.Open();

myOracleDB version is 11.2.0 - 64bit

when I try to execute this code, it throws an error-

ORA-12154: TNS:could not resolve the connect identifier specified
at System.Data.OracleClient.OracleException.Check(OciErrorHandle errorHandle, Int32 rc)

I googled this error and there are a lot of possible cause. but nothing is applied in this scenario.

Is this problem of Oracle 64bit?

Posted 2-Sep-12 22:12pm

ashriv

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Mohamed Mitwalli · Accepted Answer · 2012-09-02T22:54:00

Hi ,

Make sure you add reference Oracle.DataAccess

C#

using Oracle.DataAccess.Client;
using Oracle.DataAccess.Types;


                string oradb = "Data Source=(DESCRIPTION="
                + "(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.1)(PORT=1521)))"
                + "(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=test.eg.com)));"
                + "User Id=scott;Password=123;";


                OracleConnection con = new OracleConnection(oradb);
                con.Open();

http://www.connectionstrings.com/oracle[^]
Best Regards
M.Mitwalli