Three tier module how to choice shared mode or dedicated

We use three tier module to setup client,AP server,and Oracle DB, witch my ERP environment,and I have 1000's user to connect two AP server.In this case,what is better choice shared server or dedicated server?why?

If you are using connection pooling at the application server, you don't want to use MTS on the server. If you're using connection pooling at the app server, you're already concentrating those thousands of users into many fewer connections, so there's little point in incurring the MTS overhead.
If you are not using connection pooling at the app server level, and your database server isn't powerful enough to handle the number of concurrent users you expect in dedicated mode, go with MTS.
Justin

Similar Messages

Is our oracle 9iR2 db is a shared mode or dedicated mode? whats difference?

Friends,
We are using Oracle 9iR2 Database. How can i know our db is a shared Server architecture or a dedicated server architecture?
Also, what is the difference between these two? Please tell me in short.
Note: I didn't install/create our db.
Thanks
Sathyguy

Check out the distinct values in SERVER column in V$SESSION. If it reads DEDICATED, then you are in dedicated mode. If it reads NONE or SHARED, the you are using MTS (or shared server mode).
You can have DEDICATED connection in MTS mode also by changing the TNS entry.
Dedicated mode: Each of these client connections takes up some resources (memory, CPU time, net-work bandwidth…) on the database server. More the number of client connections, more is the resource consumption, more is the delay is processing the requests.
A database serving an application, where-in most of the server processes spawned by the client requests are idle for 90+% of the connect time, is a good candidate for Ora-cle Multi-Threaded Server (MTS) mode configuration.
Multi-Threaded Server is configuration method in which one server process can handle more than one client connections/processes/requests.
As there are a few number of server processes created on server, the server re-sources are utilised to a minimum. This enables the database administrator to define more number of dispatcher processes to handle the requests from the clients and more number of shared server processes that handle and process the requests be-tween these dispatchers and database kernel

Configuring dedicated/shared mode with DBCA wizard

Hello,
I've tried to configure several instances with DBCA wizard, both in dedicated and shared mode :
- when dedicated mode is selected, dispatchers parameter is set like this : "dispatchers=(PROTOCOL=TCP) (SERVICE=sidXDB)", and all connections at the instance will be in by default dedicated mode, even if the "shared_servers" parameters is greater than 0
- when shared mode is selected, dispatchers parameter is set like this : "dispatchers=(PROTOCOL=TCP)"
I thought that the instance would run automatically in shared mode if the "shared_servers" parameters is greater than 0, but that's untrue
Besides, I don't understand the link between the "(SERVICE=sidXDB)" option, which seems to be related to the XML database, and the connection mode to the instance.
This is quiet confusing to me, there is obviously something I don't know or I don't understand
Can anyone make it clear to a Oracle beginner ?
Thank you for help !
regards,
Antoine

SHARED_SERVERS alone is not enough, it needs a corresponding dispatchers setting, something like 'dispatchers=(PROTOCOL=TCP)'. By default during a 10g database creation a XML DB is configured and 'dispatchers=(PROTOCOL=TCP) (SERVICE=sidXDB)' is dedicated to this XML DB, this dispatcher cannot serve any other database service. That means normal database connections are created as dedicated ones.
Werner

How to Use Swing-ADF in a Three-Tier-Archiitecture

I am currently avaluating Swing-ADF (11g) and I wonder how I can leverage it in a three-tier, rich-thin-client-environment. When I bind a control, normally I would do it directly to the database. As I want to have my business logic and database access on the middle-tier, how do I bind my controls to the middle-tier which in turn accesses the database. Does ADF support a mechanism to bind the Swing-Client to the middle-tier-data? Is the recommended way to go for webservices? Can Webservices easily bound to the ADF-controls? Is it the only way?
best regards
Stefan

Stefan,
It is a built-in feature of ADF Business Components to expose an application module as a stateful EJB session bean to support three-tier Swing-client access. It requires absolutely no effort from the developer, who can even easily switch between running/testing in 2-tier or 3-tier modes. Shay's answer is valid for the general case, but in the specific case of what the ADF tech stack can bring to bear to solve your problem, it can be completely simple to achieve (even requiring zero code, if you choose to leverage that feature of ADFBC).

Three tier (mod pl/sql) vs. two tier (PL/SQL Gateway)

I've been using 10g Database and 10g application server on separate servers for some time now.
Going the two tier (11g) route has some attractions, but what are the disadvantages?
The Oracle documentation I've seen says very little on making the decision, giving benefits as:
Ease of configuration
Included in the database
No separate server installation
- but no negatives.
Does anyone have any real live experience of comparing the two options?
I'm inclined to believe that three tier might have more tuning flexibility, better performance if each tier is on a different server. Maybe worse than two tier if on one server, assuming two tier eliminates communication overheads..
Does pl/sql gateway have the caching ability of Apache/mod pl/sql - I assume not? - that could make a big difference.
Any thoughts would be welcome...

There are several key performance advantages of OHS over EPG. I'm working a lot with the EPG right now and pushing the XDB team to add several of these features (maybe in 11.2, possible backport, but don't count on it). I used recommendations from the yslow Firefox add-in to do some performance tuning. Here's there list of Best Practices:
http://developer.yahoo.com/performance/rules.html
- EPG does not add an "Expires" header. So, lets say you have 25 images in your page template, and none of them change. Each page view will still request those 25 images. They use etags, so you don't have to download the images, but your browser still makes the requests which is quite slow. From my testing, pages could be up to 4 times slower with the EPG with a pretty standard template. The XDB team is aware of this and working hard to resolve it.
- EPG does not support gzip. This is another HUGE performance hit.
Keep in mind you can't test any of those issue with debug mode in APEX, you really need to use a browser plugin such as Firebug + ySlow. The render speed from APEX's point of view will be the same, no matter what HTTP server you use.
The other big on is mod_rewrite support. There is no way easily create friendly URLs for your apps. Another thing to consider is that a number of Identity Management systems, such as Oracle Access Manager (OAM) work by installing an Apache Module or in the case of IIS, some type of plugin (forget what they call it). There is no concept of this in EPG.
IMHO, it's convenient for laptops, but I would never use it for production unless you needed some feature that it exposes, such as WebDav or FTP access to the XDB repository...
Tyler

WPF How can I implement the INotifyPropertyChanged in a Three-tier architecture?

I am a student and I am confused on using the INotifyPropertyChanged in a three-tier style of coding. Can you guys help me a bit with these?
I have a solution named MetroAppProject. It is composed of four projects (I omitted the using clauses and references, just imagine they are there and are working fine):
1. MetroApp.BluePrints - a class library composed of the classes in my sql db
An example of my class
namespace MetroApp.BluePrints
public partial class Patient
public long Id { get; set; }
public string PatientNumber { get; set; }
public string LastName { get; set; }
public string FirstName { get; set; }
public string MiddleName { get; set; }
public string AddressLine1 { get; set; }
public Nullable<short> CityId { get; set; }
public string CityName { get; set; }
public Nullable<short> ProvinceId { get; set; }
public string ProvinceName { get; set; }
Then the second project:
2. MetroApp.DataAccess = a class library composed of methods that calls my sql procedures. I used the SqlHelper class which contains the connection strings and other stuffs.
example class
namespace MetroApp.DataAccess
public class PatientDb
public Patient Retrieve(PatientParams parameters)
SqlCommand command = new SqlCommand();
Patient singItem = new Patient();
command.CommandText = "RetrievePatients";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@Id", parameters.Id).Direction = ParameterDirection.Input;
DataTable dt = SqlHelper.GetData(command);
if (dt.Rows.Count > 0)
DataRow row = dt.Rows[0];
singItem.Id = TDefaultValue.GetInt(row["Id"].ToString());
singItem.PatientNumber = TDefaultValue.GetString(row["PatientNumber"].ToString());
singItem.LastName = TDefaultValue.GetString(row["LastName"].ToString());
singItem.FirstName = TDefaultValue.GetString(row["FirstName"].ToString());
singItem.MiddleName = TDefaultValue.GetString(row["MiddleName"].ToString());
singItem.AddressLine1 = TDefaultValue.GetString(row["AddressLine1"].ToString());
singItem.CityId = TDefaultValue.GetShort(row["CityId"].ToString());
singItem.CityName = TDefaultValue.GetString(row["CityName"].ToString());
singItem.ProvinceId = TDefaultValue.GetShort(row["ProvinceId"].ToString());
singItem.ProvinceName = TDefaultValue.GetString(row["ProvinceName"].ToString());
return singItem;
public List<Patient> RetrieveMany(PatientParams parameters)
var items = new List<Patient>();
var command = new SqlCommand();
command.CommandText = "RetrievePatients";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@Id", parameters.Id).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@PatientNumber", parameters.PatientNumber).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@LastName", parameters.LastName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@FirstName", parameters.FirstName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@MiddleName", parameters.MiddleName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@CityId", parameters.CityId).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@ProvinceId", parameters.ProvinceId).Direction = ParameterDirection.Input;
DataTable dt = SqlHelper.GetData(command);
foreach (DataRow row in dt.Rows)
var item = new Patient();
item.Id = TDefaultValue.GetLong(row["Id"].ToString());
item.PatientNumber = (row["PatientNumber"].ToString());
item.LastName = (row["LastName"].ToString());
item.FirstName = (row["FirstName"].ToString());
item.MiddleName = (row["MiddleName"].ToString());
item.AddressLine1 = (row["AddressLine1"].ToString());
item.CityId = (short)row["CityId"].ToString();
item.CityName = (row["CityName"].ToString());
item.ProvinceId = (short)row["ProvinceId"].ToString();
item.ProvinceName = (row["ProvinceName"].ToString());
items.Add(item);
return items;
public bool Insert(Patient entity, int userId, ref bool doesExist)
var command = new SqlCommand();
try
command.CommandText = "AddPatient";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@PatientNumber", entity.PatientNumber).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@LastName", entity.LastName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@FirstName", entity.FirstName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@MiddleName", entity.MiddleName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@AddressLine1", entity.AddressLine1).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@CityId", entity.CityId).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@ProvinceId", entity.ProvinceId).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@Id", entity.Id).Direction = ParameterDirection.Input;
command.Parameters.Add("@DoesExist", SqlDbType.Bit).Direction = ParameterDirection.Output;
int result = SqlHelper.ExecuteNonQuery(command);
doesExist = (bool)(command.Parameters["@DoesExist"].Value);
entity.Id = (int)(command.Parameters["@Id"].Value);
if (result == 0 || doesExist)
return false;
return true;
catch (Exception)
return false;
public bool Update(Patient entity, int userId, ref bool doesExist)
var command = new SqlCommand();
try
command.CommandText = "EditPatient";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@PatientNumber", entity.PatientNumber).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@LastName", entity.LastName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@FirstName", entity.FirstName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@MiddleName", entity.MiddleName).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@AddressLine1", entity.AddressLine1).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@CityId", entity.CityId).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@ProvinceId", entity.ProvinceId).Direction = ParameterDirection.Input;
command.Parameters.AddWithValue("@Id", SqlDbType.Int).Direction = ParameterDirection.Output;
command.Parameters.Add("@DoesExist", SqlDbType.Bit).Direction = ParameterDirection.Output;
doesExist = (bool)(command.Parameters["@DoesExist"].Value);
int result = SqlHelper.ExecuteNonQuery(command);
if (result == 0 || doesExist)
return false;
return true;
catch (Exception)
return false;
Then a business logic
3. MetroApp.BusinessLogic = class libray for calling the methods from DataAccess
namespace MetroApp.BusinessLogic
public class PatientMgr
#region Fields
private readonly PatientDb _db;
#endregion
#region Properties
public Patient Entity { get; set; }
public List<Patient> EntityList { get; set; }
public PatientParams Parameters { get; set; }
#endregion
#region Constructors
public PatientMgr()
_db = new PatientDb();
Entity = new Patient();
EntityList = new List<Patient>();
Parameters = new PatientParams();
#endregion
#region Methods
public Patient Retrieve(PatientParams parameters)
return _db.Retrieve(parameters);
public List<Patient> RetrieveMany(PatientParams parameters)
return _db.RetrieveMany(parameters);
public bool Insert(Patient entity, int userId, ref bool doesExist)
return _db.Insert(entity, userId, ref doesExist);
public bool Update(Patient entity, int userId, ref bool doesExist)
return _db.Update(entity, userId, ref doesExist);
#endregion
Then the last one, the WPF GUI
<UserControl x:Class="MetroDentProject.Pages.PatientDetailsPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:dims="clr-namespace:MetroAppProject.UserCons"
mc:Ignorable="d"
d:DesignHeight="720" d:DesignWidth="1280">
<Grid x:Name="MainGrid" >
<Grid.RowDefinitions>
<RowDefinition Height="40"/>
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<GroupBox Grid.Column="0" Grid.Row="1" Grid.RowSpan="7" x:Name="DetailsGroupBox" Header="Patient Details" >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="Id: " Grid.Column="1" Grid.Row="0" Visibility="Collapsed"/>
<TextBox x:Name="IdTextBox" Grid.Column="1" Grid.Row="1" Visibility="Collapsed"/>
<TextBlock x:Name="PatientNumberTextBlock" Text="Patient Number: " Grid.Column="0" Grid.Row="0" />
<TextBox x:Name="PatientNumberTextBox" Grid.Column="1" Grid.Row="0" IsReadOnly="True" IsReadOnlyCaretVisible="True"/>
<TextBlock Text="Last Name: " Grid.Column="0" Grid.Row="1" />
<TextBox x:Name="LastNameTextBox" Grid.Column="1" Grid.Row="1" />
<TextBlock Text="First Name: " Grid.Column="0" Grid.Row="2" />
<TextBox x:Name="FirstNameTextBox" Grid.Column="1" Grid.Row="2" />
<TextBlock Text="Middle Name: " Grid.Column="0" Grid.Row="3" />
<TextBox x:Name="MiddleNameTextBox" Grid.Column="1" Grid.Row="3" />
</Grid>
</GroupBox>
<GroupBox x:Name="ContactDetailsGroupBox" Header="Contact Details" Grid.Column="1" Grid.Row="1" Grid.RowSpan="7">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="Address: " Grid.Column="0" Grid.Row="0" Grid.RowSpan="2" />
<TextBlock Text="City: " Grid.Column="0" Grid.Row="2" />
<TextBlock Text="Province: " Grid.Column="0" Grid.Row="3"/>
<TextBox x:Name="AddressTextBox" Grid.Column="1" Grid.Row="0" Grid.RowSpan="2"
TextWrapping="Wrap"
AcceptsReturn="True"
VerticalScrollBarVisibility="Auto"
/>
<ComboBox x:Name="CitiesComboBox" Grid.Column="1" Grid.Row="2" />
<ComboBox x:Name="ProvincesComboBox" Grid.Column="1" Grid.Row="3" />
</Grid>
</GroupBox>
<dims:FunctionButtonsControl x:Name="FunctionButtonsCon" Grid.Row="9" Grid.Column="0" Grid.ColumnSpan="2"
ExecuteClick="FunctionButtonsCon_OnExecuteClick"
UndoClick="FunctionButtonsCon_OnUndoClick"
BackClick="FunctionButtonsCon_OnBackClick"
DeleteClick="FunctionButtonsCon_OnDeleteClick"
/>
</Grid>
</UserControl>
I apologize for the long post. As you can see, I don't use binding. Binding requires me to use INotifyPropertyChanged interface which I am not familiar. Can you at least make my project to implement the INotifypropertyChanged?
Here is my sample code for the WPF page:
public partial class PatientDetailsPage
readonly PatientMgr itemMgr = new PatientMgr();
public PatientParams CurrentPar = new PatientParams(); // for undoActionType _action = ActionType.Insert; // this is an enum from another project, ActionType.Insert, ActionType.Update
public ActionType Action
get { return _action; }
set { _action = value; }
public PatientDetailsPage()
InitializeComponent();
BindComboBoxes();
#region Methods
public void OnFragmentNavigation(FragmentNavigationEventArgs e)
public void OnNavigatedFrom(NavigationEventArgs e)
public void OnNavigatedTo(NavigationEventArgs e)
{ Setup();
public void OnNavigatingFrom(NavigatingCancelEventArgs e)
public Patient GetPageEntity()
Patient setEntity = new Patient();
setEntity.Id = (long)IdTextBox.Text;
setEntity.PatientNumber = PatientNumberTextBox.Text;
setEntity.LastName = LastNameTextBox.Text;
setEntity.FirstName = FirstNameTextBox.Text;
setEntity.MiddleName = MiddleNameTextBox.Text;
setEntity.AddressLine1 = AddressTextBox.Text;
setEntity.CityId = (short)CitiesComboBox.SelectedValue);
setEntity.ProvinceId = (short)ProvincesComboBox.SelectedValue;
setEntity.StatusId = true;
return setEntity;
public void Setup()
switch (Action)
case ActionType.Insert:
Clearer(); //clears all textboxes and set all comboboxes to default
this.PatientNumberTextBlock.Visibility = Visibility.Collapsed;
this.PatientNumberTextBox.Visibility = Visibility.Collapsed;
FunctionButtonsCon.ExecuteButton.Content = "Add";
FunctionButtonsCon.DeleteButton.IsEnabled = false;
FunctionButtonsCon.DeleteButton.Visibility = Visibility.Hidden;
break;
//**Setup Update
case ActionType.Update:CurrentPar.Id = (long)IdTextBox.Text;
LoadSingle(CurrentPar);
this.PatientNumberTextBlock.Visibility = Visibility.Visible;
this.PatientNumberTextBox.Visibility = Visibility.Visible;
FunctionButtonsCon.ExecuteButton.Content = "Save";
FunctionButtonsCon.DeleteButton.IsEnabled = true;
FunctionButtonsCon.DeleteButton.Visibility = Visibility.Visible;
break;
LastNameTextBox.CaretIndex = LastNameTextBox.Text.Length;
IsVisibleChanged += AutoFocus;
public void LoadSingle(PatientParams parameters)
var entity = itemMgr.Retrieve(parameters); //calls the BusinessLogic
IdTextBox.Text = (entity.Id);
PatientNumberTextBox.Text = (entity.PatientNumber);
LastNameTextBox.Text = (entity.LastName);
FirstNameTextBox.Text = (entity.FirstName);
MiddleNameTextBox.Text = (entity.MiddleName);
AddressTextBox.Text = (entity.AddressLine1);
CitiesComboBox.SelectedValue = (short)entity.CityId;
ProvincesComboBox.SelectedValue = (short)entity.ProvinceId;
public void Save(ActionType action, int userId)
itemMgr.Entity = GetPageEntity();
bool doesExist = false;
switch (action)
case ActionType.Insert:
if (itemMgr.Insert((itemMgr.Entity), userId, ref doesExist))
System.Windows.Forms.MessageBox.Show("Successfully added a Patient!", "Patient Insertion");
else if (doesExist)
System.Windows.Forms.MessageBox.Show("Item already exists.", "Patient Insertion");
else
System.Windows.Forms.MessageBox.Show("Not all fields were filled in.", "Patient Insertion");
break;
case ActionType.Update:
if (itemMgr.Update(itemMgr.Entity, userId, ref doesExist))
System.Windows.Forms.MessageBox.Show("Successfully updated a Patient!", "Patient Modification");
itemMgr.Parameters.Id = itemMgr.Entity.Id;
Action = ActionType.Update;
Setup();
else if (doesExist)
System.Windows.Forms.MessageBox.Show("Item already exists.", "Patient Modification");
else
System.Windows.Forms.MessageBox.Show("Not all fields were filled in.", "Patient Modification");
break;
public void Clearer()
IdTextBox.Clear();
PatientNumberTextBox.Clear();
LastNameTextBox.Clear();
FirstNameTextBox.Clear();
MiddleNameTextBox.Clear();
CitiesComboBox.SelectedIndex = 0;
ProvincesComboBox.SelectedIndex = 0;
AddressTextBox.Clear();
public void BindComboBoxes()
CitiesComboBox.ItemsSource = new BindingSource(CommonMgr.GetCitiesDropDown(), null);// the CommonMgr is a static class from another project. It works just fine
CitiesComboBox.DisplayMemberPath = "Value";
CitiesComboBox.SelectedValuePath = "Key";
ProvincesComboBox.ItemsSource = new BindingSource(CommonMgr.GetProvincesDropDown(), null);
ProvincesComboBox.DisplayMemberPath = "Value";
ProvincesComboBox.SelectedValuePath = "Key";
CitiesComboBox.SelectedIndex = 0;
ProvincesComboBox.SelectedIndex = 0;
#endregion
#region Events
private void FunctionButtonsCon_OnExecuteClick(object sender, RoutedEventArgs e)
Save(Action, SessionHelper.MyUser.Id); //SessionHelper.MyUser.Id
private void FunctionButtonsCon_OnUndoClick(object sender, RoutedEventArgs e)
if (Action == ActionType.Insert)
Clearer();
return;
private void FunctionButtonsCon_OnBackClick(object sender, RoutedEventArgs e)
Exiter();
private void FunctionButtonsCon_OnDeleteClick(object sender, RoutedEventArgs e)
var ans = System.Windows.Forms.MessageBox.Show("Are you sure you want to delete this entry?", "Patient Deletion", MessageBoxButtons.YesNo);
if (!Equals(ans, System.Windows.Forms.DialogResult.Yes)) return;
Action = ActionType.Delete;
Save(Action, SessionHelper.MyUser.Id);
Exiter();
#endregion

Hello Kokombads,
I thought you are using MVVM from your title but it seems your project is just a simple WPF project. In that way, please check the following msdn article to know how to Implement Property Change Notification
https://msdn.microsoft.com/en-us/library/ms743695(v=vs.110).aspx
using System.ComponentModel;
namespace SDKSample
// This class implements INotifyPropertyChanged
// to support one-way and two-way bindings
// (such that the UI element updates when the source
// has been changed dynamically)
public class Person : INotifyPropertyChanged
private string name;
// Declare the event
public event PropertyChangedEventHandler PropertyChanged;
public Person()
public Person(string value)
this.name = value;
public string PersonName
get { return name; }
set
name = value;
// Call OnPropertyChanged whenever the property is updated
OnPropertyChanged("PersonName");
// Create the OnPropertyChanged method to raise the event
protected void OnPropertyChanged(string name)
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
handler(this, new PropertyChangedEventArgs(name));
It is not so complex, you only need to refer to the interface from here:
https://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged(v=vs.110).aspx
And understand that you have to do the following:
For change notification to occur in a binding between a bound client and a data source, your bound type should either:
Implement the INotifyPropertyChanged interface (preferred).
Provide a change event for each property of the bound type
Best regards,
Barry
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When I attempt to apply a lens profile in the Develop module the only choices are for the Fujifilm X100/S/T even though in the Library module the EXIF data correctly shows the camera as the X-T1 and the precise lens used to take the picture. How do I get

When I attempt to apply a lens profile in the Develop module the only choices are for the Fujifilm X100/S/T even though in the Library module the EXIF data correctly shows the camera as the X-T1 and the precise lens used to take the picture. How do I get the right profile available?

First, the required profile needs to be present. LR 5.4 supports the X-T1 in terms of understanding its Raw format, but will not come with a profile for every lens which can be mounted onto that.
A profile is made for each specific lens, as mounted on a certain camera. It can also be used with pictures taken on a different (reasonably similar) camera body than the one originally used during profiling. This is subject to the sensor format: you can employ a given lens profile made for full frame, on an image from a crop sensor behind the same lens - but not vice versa.
Next, the image type needs to correspond to the image type which has been built into the profile: Raw, or non-Raw.
Lightroom offers only profiles of the right type for the image(s) concerned. There are many more provided for correcting camera Raw, than for correcting camera JPG. That is also the case with additional profiles, e.g. those accessed via the Adobe lens profile downloader utility.
Finally, in the event that there simply is no profile out there for a given lens, it is not particularly difficult (though a little tedious) for the end user to generate one, using a further Adobe utility which is downloadable as a package, including a range of checkerboard calibration targets, each of which needs to be printed at a stated physical size.

How change database from mode MTS (Shared) to mode Dedicated?

How change database (Oracle 8.1.7) from mode MTS (Shared) to mode Dedicated?

Did you try it ? Look at this :
TEST =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = test)
      (SERVER=SHARED)
SQL> show parameter mts
NAME                                 TYPE    VALUE
mts_circuits                         integer 170
mts_dispatchers                      string (protocol=tcp)(dispatchers=2)(
                                             connections=500)
mts_listener_address                 string
mts_max_dispatchers                  integer 5
mts_max_servers                      integer 20
mts_multiple_listeners               boolean FALSE
mts_servers                          integer 2
mts_service                          string test
mts_sessions                         integer 165
SQL> conn scott/tiger@test
Connected.
SQL> conn / as sysdba
Connected.
SQL> alter system set mts_dispatchers='(protocol=tcp)(dispatchers=0)(connections=0)'
SQL> /
System altered.
SQL> alter system set mts_servers=0;
System altered.
SQL> conn scott/tiger@test
ERROR:
ORA-12520: TNS:listener could not find available handler for requested type of
server
Warning: You are no longer connected to ORACLE.
SQL>                                                                                                                  However, as I said in my previous posting, you should modify initSID.ora too. If not, next time you'll restart your DB, it will run in shared mode again.

How to install oracle applicatons in a three tier architecture

Hi,
i want to install oracle apps in a three tier architecture?
application tier -- middle tier
database tier -- database tier
Any steps or a meta link document
Regards
Sudharshan

Hi,
http://download.oracle.com/docs/cd/B34956_01/current/acrobat/120oaig.pdf
Pages 2-10 and Pages 2-19 don't specify this ???
They indicate only having to install with rapidwiz 1 time (as root user if appl/ora accounts setup) ??It is mentioned in Page 1-2
Release 12 utilizes the conf_<SID>.txt file in certain situations, for example where the database has not yet been created. The configuration file is also employed in multi-node (distributed) installs, where you only need to enter the install information once, on one machine, and can then copy the configuration file to other machines as required.
If you are installing in an environment where different machines are used to support the database and Applications tiers (as is typically the case), you would run Rapid Install on each machine in turn, starting with the database machine.
Regards,
Hussein

RT: 9512 modules fault when using hybrid mode

Hello, I am having an issue with my cRIO hyrbid setup. I am currently using Labview 2010, cRIO 9074, x1 NI 9234, and x3 NI 9512.
Summary:
What you are trying to accomplish?
-I have built two VIs. One that acquired data from an NI 9234. This vi is the one that uses the FPGA due to 51.2kHz sampling frequency needs. The other is to control the motion and encoder reading of three NI 9512s (scan mode). They both work fine separately (on the same FPGA bitfile), but when I copy and paste the VI for the NI 9234 into the VI for the x3 9512s and click run, the motors fault out.
What steps are necessary to reproduce any problems?
click run on the attached (prepared program_2VItesting.vi).
What steps, if any, you have taken to solve any problems and the results of your attempts
-I have confirmed that if i run the two VIs separately, they work fine. The very first time i combine the two VIs the 9512s work for a second (i.e. the motors move a little). Then it faults. I then used distribution manager to clear the fault and run it again (note: there is no fault code, i just clear the red light on the module by changing to configuration mode then active mode). Every time after the first time the motors do not move at all.
- I have confirmed that i did correctly setup the hybrid mode based on this kB:
http://digital.ni.com/public.nsf/allkb/0DB7FEF37C26AF85862575C400531690
I have attached the vi of the two VIs combined together(prepare program_2VITesting.vi). The top half is the copied and pasted FPGA program (as noted by the open VI reference) and the bottom is the scan mode (as noted by the timed loop). I also attached the seperate VIs (JustDAQ and prepared program) that can both function right now by justing pressing run.
Am i just missing something simple here?
Thanks,
Troy
Solved!
Go to Solution.
Attachments:
prepared program_2VITESTING.vi ‏1369 KB
prepared program_ThisWORKS.vi ‏445 KB
JustDAQ.vi ‏930 KB

Hello Troy_B,
Thanks for the post, here is a useful KB describing how to use Scan Engine and FPGA simultaneously. Please take a look at this documentation and make sure you have everything configured correctly for Hybrid Mode.
http://digital.ni.com/public.nsf/allkb/0DB7FEF37C26AF85862575C400531690
Note:
Hybrid Mode has longer compile time because the compiler has to combine the RIO Scan Interface bitfile and the FPGA code into one bitfile.
The number of DMA FIFO's available for FPGA code is reduced since the scan engine uses 2 DMA FIFO's.
Here is an example of what your final project should look like with Mod1 in Scan Mode and Mod2 in FPGA Mode:
Hope this helps!
Paul-B
Applications Engineer
National Instruments

Three tier architecture using oracle dev suite 10g & oracle database 9i

hi ,
I am trying to build a software which will manage the database of a hospital through usual form design .
The tools I am using for these are
(1) oracle server database 9i (2) oracle developer suite 10g (3) windows xp professional service pack 2 .
I have designed the form modules in developer suite , created the tables in the database , connected those tables to the form modules using dml statements, now data can be inserted , updates and deleted through the form design . I have also deployed the forms using "run forms through web" and thereby other computers connected to the main computer through lan can also access the software using the web port address and the name of form to be used , these computers are not having oracle developer suite or oracle database installed , but they can access the software through the browser .
In this scenario my question is that , is this a three tier architecture as oracle database is the first tier , oracle developer suite is the middle tier where I am puting all the bussiness logics and oc4j instance is used to connect the database and the dev suite , and for user interaction we have the browser as the third tier ?
or this is a two tier architecture ? if this is a two tier architecture please let me know how can I implement a three tier architecture using oracle developer suite 10g and oracle server database 9i .
Thanks a lot for showing ur interest to read this

You need Oracle Application Server to deploy the forms when you go live.
What you are currently using OC4J which came in the developer suite. It is used only for development purpose and can not have capacity to handle higher load.
3 tier arch
1. Thin Client :-> Browser
2 Middle tier -> Oracle Appln Server /OC4j(in ur case)
3 Database Tier -> Oracle Database
Rajesh

How to set Compatibility Mode for a single site in ie10

This question was originally posted on the Answers forum -
http://answers.microsoft.com/en-us/ie/forum/ie10-windows_7/how-to-set-compatibility-mode-for-a-single-site-in/187152e3-142a-4d96-8d1b-af82ef571eec
I am having problem with getting ie10 to set ie9 compatibility for a single site (sharepoint.contoso.com).
When I add this website in Compatibility View Settings (Alt > Tools > Compatibility View Settings > 'Add this Website') it adds the domain 'contoso.com' and not the individual website (sharepoint.contoso.com).
This cause other sites (www.contoso.com) to be configured to use compatibility mode. Because this is a separate site (different web server) to the site sharepoint.contoso.com (sharepoint 2010 server) we need different compatibility settings.
Using a different example to explain the issue -
Microsoft has three websites that are different websites created by different developers written in different programming languages and they only work with certain browsers.
microsoft.com (Website1 created by Developer1) - compatible with ie8/ie9/ie10
msdn.microsoft.com (Website2 created by Developer2) - compatible with ie8/ie9
technet.microsoft.com (Website3 website created by Developer3) - compatible only with ie10
The only thing the three website share is the URL contains 'microsoft.com'.
Marking 'msdn.microsoft.com' to run in compatibility mode affects the other 2 websites - mainly technet.microsoft.com which will not work now since it only runs in pure ie10 mode.
Should you be able to add an individual site to the compatibility list instead of all sites that have .microsoft.com in the URL? Am I missing a simple setting in the ie10?
As a workaround I am using the F12 Developer Tools to set the Browser Mode which temporary sets the compatibility mode. However this is not a nice solution to the end users at our organisation.

problem is not solved for non corporate environments...
You could start your own thread. Then if you got that answer and it was marked Answered you would have the ability to unmark it. The OP of this one seems satisfied. Also note that this is TechNet. Consumers can get help on Answers
forums.
Robert Aldwinckle
Oh! I wrote it wrong: I should have said: This is not solved for NON-AD environments. No demands what so ever to use Window 7/8 professional in a small corporation or on a big corporation with Island of smaller departments for example offshore.
The problem is that the thread is not "Answered" by the OP, its is marked answered by a moderator (and same moderator that did the answer) so no way of telling if the OP is satisfied.
But you are right in the fact that I am almost kidnapping the thread. But a complete answer would benefit all in this case I would presume.
Regards
/Aldus

Reporting services in three tier SharePoint 2013 environment

Hi,
I am trying to integrate SQL Server 2012SP1 Reporting Services in a three tier SharePoint 2013 environment, but it seems it is not succesful.
The setup is as following:
SRV1: SQL Server with content, config,... and the Reporting Service databases.
SRV2: SharePoint 2013 Application server & Central Administration
SRV3: SharePoint Web Front with SharePoint sites
All application pools are started with domain accounts on SRV2 & 3
When opening the Central Administration site, the Reporting Services Service Application and its Proxy is created and configured. On SRV2 the Application exists in the application pool in IIS, but it does not appear in the SRV3. Should it be created manualluy?
In Central Administration, when opening the site settings the Reporting Services section is created, but when opening the Site Settings for the root site the section shows variables:
$Resources:ReportServerResources,ReportServerSiteSettingsGroupTitle;
$Resources:ReportServerResources,ScheduleList;
$Resources:ReportServerResources,SiteLevelSettings;
$Resources:ReportServerResources,ManageSiteDataAlerts;
I believe i need some help here.
Thanks in advance.
Best regards,
J

Hi J-S,
Generally, the issue occurs if you are in the Windows Powershell instead of the SharePoint Management Shell or the Reporting Services - SharePoint mode feature is not installed. So, please double check you are using the SharePoint Management Shell or install
the Add-in by installing the rssharepoint.msi instead. Here is the download link:
http://www.microsoft.com/en-us/download/details.aspx?id=35583
If it is not the issue, please install the Reporting Services - SharePoint mode from the SQL Server 2012 installation media.
Reference:
http://msdn.microsoft.com/en-us/library/ms144289.aspx#bkmk_cmdlets_not_recognized
Regards,
Mike Yin
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Mike Yin
TechNet Community Support

Using eclipselink in a three tier

Hi, I'm using eclipselink in a three tier architechture. Normally this is set up with just one database user having a connection pool. What I want to set up is that all client users log in and get their own connection, so that they use their own database user account. So I need somehow to create an entitymanager that does not use a connection from the connection pool, but creates a connection using the credentials the user logged in the application with.
Can someone give me a hint how to achieve that?
TIA,
Tom

Hi,
You can customize the session to use the username and password for logging to database.Below sample code uses sessioncustomizer to customize the user credentials for database login.
If you are using the JDeveloper for Toplink development.
Open the persistence.xml in flat editor and select the Topink customization tab and select the below class for Session customization.Whenever application is run the database login will be customized to the passed in username and password values.
import org.eclipse.persistence.config.SessionCustomizer;
import org.eclipse.persistence.sessions.Session;
public class SampleSessionCustomizer implements SessionCustomizer {
public SampleSessionCustomizer() {
super();
public void customize(Session session) throws Exception {
session.getLogin().setUserName(userName);
session.getLogin().setPassword(password);
Hope this helps.
Regards,
P.Vinay Kumar

Three Tier Configuration

Hi friends,
I am planning to implement oracle three tier architecture and want to know -
How the oracle three tier architecture should be configured on a network?
As per my information :
Database Tier : Oracle 9i server database on a machine
Middle Tier : oracle 9i AS as middle tier on a machine
Client Tier : what software should be installed on client tier?
As middle tier need
Pentium 300MHz,6GB hdd space,512 RAM
What are the minimum requirement of client tier to run form and reports applications?

1. Use 10g Application Server - You have to install the Enterprise version for forms & reports servers - you can choose to not configure the pieces you don't want to use as part of the setup though.
2. Java plugin is more mature than the jinitiator. Java plugin works on more systems and is much quicker since its much newer than the 1.1.8 and 1.3.x version oracle provides - Sun or IBM jvm's work great.
3. In most cases uses have an office application, email application or other tools running in conjunction to being logged into a forms/reports application. With the over head of multiple browsers, jvm, and other applications i wouldn't recommend anything else. With Pentium 4 systems fully loaded for business systems running 699.00 or less (dell/hp/gateway) i don't think client side computing power should be an issues - especially if you can afford the licensing costs of the application server to begin with :)
In my experience give your "power" users (the ones running your business apps) the POWER they need to get the job done right and they will appreciate the new systems you implement rather than fear them. A PC upgrade is alot easier then months and months of headaches with people complaining about response times, load times, performance and application useability.

Three tier module how to choice shared mode or dedicated

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