DevOps, CI/CD and Automation

I am using Oracle Provider and i did a little test to see the performance

Dim rsRetour As adodb.Recordset
    Dim cmdReturn As adodb.Command
    'Dim blnMustCloseConnection As Boolean
    
    On Error GoTo RunSpRetRsError
    
     'blnMustCloseConnection = False
    Set m_conADOConnection = r_conADOConnection
    
    ' Créer les objets
    Set rsRetour = CreateObject("ADODB.Recordset")
    Set cmdReturn = CreateObject("ADODB.Command")
       
    ' Initialiser la commande
    'cmdReturn.ActiveConnection = GetADOConnection()
    cmdReturn.ActiveConnection = m_conADOConnection
    cmdReturn.CommandText = v_strNomProcedure
    cmdReturn.CommandType = adCmdStoredProc

    If g_typDatabase = SQLServer Then
        CollectParamsSQLServer cmdReturn, v_argParams
    ElseIf g_typDatabase = Oracle Then
        cmdReturn.Properties.Item("PLSQLRSET") = 1
        CollectParamsOracle cmdReturn, v_argParams
    End If
    
    ' Créer le recordset en READ-ONLY
    ' On met le update criteria seulement sur la clé pour éviter des conflits
    rsRetour.CursorLocation = adUseClient
    'rsRetour.Properties("Update Criteria") = adCriteriaKey
    Dim intCpt As Integer
    Dim ddtDebut As Variant
    Dim ddtFin As Variant
    
    ddtDebut = Time
    For intCpt = 0 To 1000 Step 1
        cmdReturn.Execute
    Next
    ddtFin = Time
    Next

When i do ddtFin - ddtDebut here are my result for the same stored proc:
- Oracle: 8 sec
- SQLServer: 1.5 sec

It is not because of the database data and the procedure is only a select * from XXX

Is the problem due to the provider, if not what's the cause