Oracle Connection Error in C# code

[kirubagari]

  <add key="DB_CONNECTION_STRING1" value="User Id=cimmgr;Password=cimmgr;Direct=true;Data Source=cimdev.world;Port=1521;SID=cimdev"/>

      public void InsertintoDB()
        {

            string strSQL = "";
            string strDBType = System.Configuration.ConfigurationManager.AppSettings["DBType"];
            string strConn = System.Configuration.ConfigurationManager.AppSettings["DB_CONNECTION_STRING1"].ToString();
            string strInsertTableName_Sql = "CIMMGR.[dbo].ANSDATA";
            string strInsertTableName_Ora = "CIMMGR.ANSDATA";
            string strdatetime = "";
            

            strSQL = "insert into " +
            "ANSDATA " +
            "(EQID,CHAMBERID,MEMO,MESSAGE, reporttime, parameterid, ruleid, algorithmvalue, rulename, wafer, alarmaction, runreuslt) " +
            "Values('F1PGAM04', " +
            "'CHA', " +
            "'Sensor Alarm : Alarm','Sensor Alarm : {FDC SEC Alarm(Mean)} EQID=F1PGAM04,CH=CHA,Recipe=ST2SN6.1,Lot=LGQ50083.1,SVID=SIH4_TOP,LCL=6,UCL=8,Value=9.00667647058824', " +
            "to_date('2012-12-21 16:31:42','YYYY-MM-DD HH24:MI:SS'),'MFC3_Flow','75545','9.00667647058824', " +
            "'Testing Rule','LGQ50083.1_0','##INHIBIT_TOOL##','ALARM_SEND_OK') ";

            DbProviderFactory rfPF = DbProviderFactories.GetFactory(strDBType);

            if (rfPF != null)
            {
                DataSet DS = new DataSet();
                IDbConnection rfConn = rfPF.CreateConnection();
                rfConn.ConnectionString = strConn;
                IDbCommand rfCom = rfPF.CreateCommand();
                rfCom.CommandText = strSQL;
                rfCom.Connection = rfConn;
                IDbDataAdapter rfDa = rfPF.CreateDataAdapter();
                rfDa.SelectCommand = rfCom;
                rfConn.Open();
                rfDa.Fill(DS);
                
                DS.Tables["Table"].TableName = "ANSDATA ";
 
                rfCom.ExecuteNonQuery();
                rfConn.Close();
            }
          


        }

Hi Experts,
Attached is my code.I encounter error ORA-12545: Connect failed because target host or object does not exist when trying to open the connection.Do i need to do anything else in order for me to connect to the server
When i try to tnsping it is running fine and im getting an OK(130) message.
So where exactly am i going wrong
Thanks

[PsychoCoder]

That error is telling you that the address provided doesn't exist, meaning something in your connection string isn't correct. I always use ConnectionStrin gs.com for showing what a connection string for a given db should look like, in this case Oracle.