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Connection to oracle database not working in vb6 app?

tentavarious asked
Last Modified: 2010-08-05
Experts this problem is puzzling me.  I have taken over an old vb app that uses the connection string below:
 conn = "Provider=MSDAORA.1;Password=apps;User ID=apps;Data Source=BOBCAT;Persist Security Info=True"  I had it working then all of a sudden it stopped working.  I tried switching connection strings to this:conn = "driver={Oracle in OraHome90};server=xxxxxx;uid=xxxx;pwd=xxxx;DBQ=xxxxxxxx;MTS=T, and  the application opens up but when I try to query the database I keep getting an unsupported parameter error.  I would like to use the first connection string because that's what the programmer before me used and it worked fine.  When I took over the application and put it on my system, I cannot get it to run consistently, any ideas?

Private Sub Main_Form_Load()
With Main
    .Calendar1.Visible = False
    .Combo1.ListIndex = 0
    .Option1.Value = True
    .Option5.Value = True
    .Option6.Value = True
    .Text1.Text = ""
    .Text2.Text = ""
 conn = "Provider=MSDAORA;Password=xxxs;User ID=xxxx;Data Source=xxxxxxxxx;Persist Security Info=True"
    'conn = "driver={Oracle in OraHome90};server=xxxxxx;uid=xxxx;pwd=xxxx;DBQ=xxxxxxxx;MTS=T;"
    .Label5.Caption = "BOBCAT"
End With
End Sub

Public Sub Oracle_Ado_Logon()
On Error GoTo Errors
Set Cn = New ADODB.Connection
With Cn
    .ConnectionString = conn
    .Properties("Prompt") = adPromptNever
    .CursorLocation = adUseClient
    Exit Sub
End With
MsgBox "No Connection To The Database", vbCritical, "Database Connection Error"
End Sub
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