Re: Oracle client and vs studio 2003 and vb code

On Mar 25, 9:50 am, BookerT <ch...@xxxxxxxxxx> wrote:
Hopefully, I frame this problem/question correctly.

I have some code written/updated in visual studio 2003. This code when
setup on other machines where I have installed the Oracle 9i client,
and the Oracle 9.? odbc drivers will connect to my oracle database
when debugging. I ported the SAME code onto a new machine, installed
visual studio 2003, installed IIS, installed the .net frameworks 1
thru 3, registered the .net framework but when I am going through the
code and it attempts to open a
connection to the database, I get the following error below and like i
said, the same code works on other machines, with the same odbc
drivers, so i can't remember what step or proces i am missing to make
sure that the code knows how to recognize that the oracle client is
installed.:

Server Error in '/dev' Application.
---------------------------------------------------------------------------­-----

Oracle client and networking components were not found. These
components are supplied by Oracle Corporation and are part of the
Oracle Version 7.3.3 or later client software installation. Provider
is unable to function until these components are installed.
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.Data.OleDb.OleDbException: Oracle client and
networking components were not found. These components are supplied by
Oracle Corporation and are part of the Oracle Version 7.3.3 or later
client software installation. Provider is unable to function until
these components are installed.

Source Error:

Line 366: Shared Function OpenDatabase(ByVal gsConnectionString As
String) As OleDbConnection
Line 367: Dim cn As New OleDbConnection(gsConnectionString)
Line 368: cn.Open()
Line 369: Return cn
Line 370: End Function

Source File: C:\Inetpub\wwwroot\Dev\Global.asax.vb Line: 368

Stack Trace:

[OleDbException (0x80004005): Oracle client and networking components
were not found. These components are supplied by Oracle Corporation
and are part of the Oracle Version 7.3.3 or later client software
installation.

Provider is unable to function until these components are installed.]
System.Data.OleDb.OleDbConnection.ProcessResults(I nt32 hr)
System.Data.OleDb.OleDbConnection.InitializeProvid er()
System.Data.OleDb.OleDbConnection.Open()
GT.Global.OpenDatabase(String gsConnectionString) in C:\Inetpub
\wwwroot
\Dev\Global.asax.vb:368
GT.StudentSearch.Page_Load(Object sender, EventArgs e) in C:\Inetpub
\wwwroot\Dev\StudentSearch.aspx.vb:31
System.Web.UI.Control.OnLoad(EventArgs e)
System.Web.UI.Control.LoadRecursive()
System.Web.UI.Page.ProcessRequestMain()

---------------------------------------------------------------------------­-----
Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
ASP.NET Version:1.1.4322.2032

************************************************** *********

A snippet of the code that makes the connection is a s follows

gsConnectionString = OLEDB_PROVIDER & "User ID=username;Password=" &
DB_DEV_ADMIN_PASSWORD & ";Data Source=mdevl.domain.com"

where OLEDB_PROVIDER =

Public Const OLEDB_PROVIDER As String = "Provider=MSDAORA.1;"

Dim cn As OleDbConnection = OpenDatabase(gsConnectionString)

Shared Function OpenDatabase(ByVal gsConnectionString As String) As
OleDbConnection
Dim cn As New OleDbConnection(gsConnectionString)
cn.Open()
Return cn
End Function

Oracle Pl/SQL connects just fine. The odbc connections to mdevl are
working just fine

What gives

Based on the linked databases I have built in SQL Server to talk to
Oracle ODBC uses the Oracle client to actually connect to Oracle. You
must install the Oracle client on the new machine, configure
tnsnames.ora, and set up your ODBC driver, which references the Oracle
service/sid found in the tnsnames.ora file.

With .net this may not be an absolute requirement but I would think
you would have to code a thin client connection like with java so your
code would be different that what you have on the older server.

HTH -- Mark D Powell --
.

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