Question

I am trying to connect to oracle server located at some IP address but always get error as

System.TypeInitializationException:
The type initializer for
‘Oracle.DataAccess.Client.OracleConnection’
threw an exception. —>
Oracle.DataAccess.Client.OracleException
The provider is not compatible with
the version of Oracle client at
Oracle.DataAccess.Client.OracleInit.Initialize()
at
Oracle.DataAccess.Client.OracleConnection..cctor()
— End of inner exception stack trace — at Oracle.DataAccess.Client.OracleConnection..ctor(String
connectionString) at
WebApplication1._Default.Page_Load(Object
sender, EventArgs e) in
C:\Users\Sunil\Documents\Visual Studio
2008\Projects\WebApplication1\WebApplication1\Default.aspx.cs:line
26

Here is a test file

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Oracle.DataAccess.Client;
namespace WebApplication1
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            try {
                string oradb = "Data Source=(DESCRIPTION=(ADDRESS_LIST="
                + "(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.11)(PORT=1523)))"
                + "(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=ORCL)));"
                + "User Id=<user id>;Password=<some password>;";

                OracleConnection conn = new OracleConnection(oradb); // C#
                conn.Open();

            }
            catch (Exception  ex){
                Label1.Text = ex.ToString();
            }

        }
    }
}

I have installed oracle 10gR2 client and oracle 10gR2 provider for ASP.NET under Windows Vista. Am I missing anything ?

Problem Partially solved I had installed oracle client after provider

..but now exception showing as

Oracle.DataAccess.Client.OracleException
at
Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32
errCode, OracleConnection conn, IntPtr
opsErrCtx, OpoSqlValCtx*
pOpoSqlValCtx, Object src, String
procedure) at
Oracle.DataAccess.Client.OracleException.HandleError(Int32
errCode, OracleConnection conn, IntPtr
opsErrCtx, Object src) at
Oracle.DataAccess.Client.OracleConnection.Open()
at
WebApplication1._Default.Page_Load(Object
sender, EventArgs e) in
C:\Users\Sunil\Documents\Visual Studio
2008\Projects\WebApplication1\WebApplication1\Default.aspx.cs:line
28

Answer 1

Problem solved … windows vista security (?) was the problem I ran the program as administrator and everything worked fine