Unable to find the requested .Net Framework Data Provider in Oracle

Question

string constr = \"Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=spp01)(PORT=1521))(CONNECT_DATA=(SID=Global)));User

Id=SYSMAN;Password=testman3\";

Answer 1

You simply need the data provider. I had the same problem with Oracle 11g when deploying to a Windows Server 2008 R2 and after installing their data provider on the server it worked. Didn't work on the first shot though I had to restart the web app a few times.

To check if you have the ODAC on the server simply dump this string to a log somewhere or anywhere you can see it:

private String GetDbProviders()
{
    // Retrieve the installed providers and factories.
    DataTable table = DbProviderFactories.GetFactoryClasses();

    StringBuilder bob = new StringBuilder();

    // Display each row and column value.
    foreach (DataRow row in table.Rows)
    {
        foreach (DataColumn column in table.Columns)
        {
            bob.AppendLine(" "+row[column]+" ");
        }
    }

    return bob.ToString();
}