Doug Cowie 270005CYF0 Visits (1582)
From version 11.4 FixPack 3 the MDM Application Toolkit has a new hierarchy widget, which replaces the now deprecated MDM Tree coach view.
This new widget, the MDM Hierarchy coach view uses the latest in web visualisation technology to render hierarchies in BPM coaches. As well as using this new technology the MDM Hierarchy coach view also has a new method of interacting with the MDM operational server.
To highlight some of the new features, this post presents a step-by-step guide of how to get up and running with the new MDM Hierarchy coach view. I will assume a degree of familiarity with IBM BPM, in particular Process Designer.
Step 1: Drag and drop the MDM Hierarchy coach view from the palette onto the canvas, it is listed under the MDMAT grouping.
Switch to the configuration tab. You will notice that most of the fields have default values. In the rootNodeId field enter the values for the hierarchy and a node in the hierarchy in the format <hie
Step 2: Press the “Run” button in BPM. This will launch a browser, showing the coach you have just created. The hierarchy will be visible, and should render data if it has been set up correctly.
That is all that is required to get the MDM Hierarchy coach view up and running.
The coach view has a set of other configuration options; please see the documentation for more details on the configuration options.
The MDM Hierarchy coach view can be augmented by connecting it to a set of other coach views, which provide pop-up dialogs with additional behaviour that complements the hierarchy. These are the MDM Hierarchy Dialog Add, the MDM Hierarchy Dialog Details, the MDM Hierarchy Dialog Error and MDM Hierarchy Dialog MultiParent.
While each of these coach views can be added independently, the instructions below will guide you through adding them all.
Step 1: Adding the other coach views.
Drag and drop the MDM Hierarchy Dialog Add, the MDM Hierarchy Dialog Details, the MDM Hierarchy Dialog Error and MDM Hierarchy Dialog MultiParent on to the canvas that contains the MDM Hierarchy coach view.
Step 2: Create a new MDM_
Switch to the variables tab. Create a new Private variable, call it “events”. Change the Variable Type to MDM_
Step 3: Configure all of the widgets to use the same, shared event framework. Switch back to the Coaches view. For each coach, select it on the canvas, then select the Configuration tab at the bottom.
Locate the EventFramework configuration option; click the purple button next to the label. Then click the Select button to the right hand side. Find the variable you created in Step 2 (events) and select it. Do this for each of the widgets.
Step 4: Configure the visibility for each of the dialog coach views; this step should not be performed on the MDM Hierarchy coach view.
Select the coach view, then click the Visibility tab at the bottom. Leave source as “Value” then press the purple button next to the Visibility label. Press the Select button, then expand the events variable, expand the appropriate event, then select the visibility entry. Each of the different dialogs should be configured against its specific event. The MDM Hierarchy Dialog Add should be configured to use the addNode event; the MDM Hierarchy Dialog Details should be configured to use the nodeDetails event; the MDM Hierarchy Dialog MuliParent should be configured to use the multiParent event; the MDM Hierarchy Error Details should be configured to use the error event.
Step 5: Click the “Run” button in BPM.
The tree now has additional behaviour, if you right click on a node a pop-up dialog should now appear that will display additional data about the node. The add button on this dialog will launch the add dialog that can be used to add nodes into the hierarchy. If a node in the hierarchy has multiple parents in the hierarchy an icon indicating this is displayed to the right of the node, the MultiParent dialog will be launched if that icon is clicked and allows users to re-focus the hierarchy on the different parent nodes.
This brief post has demonstrated how to use the new MDM Hierarchy and associated coach views. In future posts more advanced topics, such as replacing the ajax service which supply the data to the hierarchy, and how to create custom widgets that use the event framework will be explored.
Failed to connect to the JMX port on server
When you first connect from MDM Workbench to WebSphere Application Server (AppServer) where MDM Server is installed, for example to deploy a configuration project or to run a virtual job, you might see this error:
Job Manager Error - Failed to connect to the JMX port on server
There can be several reasons why the connection might fail, for background, here is the stack you are relying on when you connect to the JMX port.
In order for the JMX port connection to be successful, you need every component in this diagram to be in a fully functioning healthy state. And yes, that means there are a lot of places you can check! As a result, it's not practical here to explain every possible area to review, but this should give you some idea of where to start investigating.
To begin, cut the problem in half: there is a message associated with blueprint virtual bridge. Look for this, and it will help you decide whether the problem is more likely to be a runtime issue (below and to the right of the blueprint virtual bridge component) or a configuration issue
1. Look for virtual bridge messages
On the Application Server where MDM is hosted, open SystemOut.log or HPEL logs: if possible restart the AppServer first to make sure you have startup messages:
When the MBean starts successfully, you will see messages like these:
Note that these messages will only appear on startup, so they may not be visible if the logs have wrapped
If you have these success messages the Blueprint virtual bridge is available for JMX requests, and everything to the right of the diagram (MPIJNI, JMS, databases, filesystems) is healthy.
In this case the likely cause of the problems is to the left of the diagram, and probably relates to a configuration issue. More information is available in section 3. When the virtual bridge has started successfully
When the MBean has not started, you see messages like this:
If you have these failure messages the Blueprint virtual bridge is not available. More information is available in the next section, 2. When the virtual bridge has not started
No messages found
If you don't find any messages relating to com.
2. When the virtual bridge has not started
When the blueprint virtual bridge has not started, the next step is to investigate potential runtime issues in one or more of the components on the right side of the diagram.
Note that you can choose whether you use a datastore or filestore for the messaging engine data store: the default is datastore (database).
There may be file system errors, these will usually be reported by the component that depends on the file system, for example the database or the JMS filestore.
In many cases you will be able to find technotes or other links on the internet with information about how to resolve the errors, or if not, contact IBM support and provide the logs that show the errors.
These related links have information about resolving blueprint errors:
3. When the virtual bridge has started successfully
Once you have found the success message, the next step is to investigate the configuration in both WebSphere Application Server and MDM Workbench.
Review the server logs for authorization errors
On the Application Server where MDM is hosted, open SystemOut.log or HPEL logs. Look for errors that reference one or more of:
Errors with any of these codes suggest that you need to re-visit the security configuration in the WebSphere Application Server administrative console, and check userid and password settings in the workbench client. Review the error messages, in many cases you will be able to find technotes or other links on the internet with information about how to resolve them, or if not, contact IBM support and provide the logs that show them.
Review the firewall settings
Verify that you can ping from the Workbench machine to the machine that hosts WebSphere Application Server and MDM Server, using your preferred ping tool.
Optionally you can use "Test Connection" from MDM Workbench, although note that in an ND configuration this tool only checks the dmgr, so it may not be the correct status for the actual server where MDM is hosted.
If you can not connect to the target MDM server, the JMX connection will not work and you need to contact your networking support team to make sure the network is available and if necessary, that appropriate firewall ports are opened.
Review the port and host configuration
Doug Cowie 270005CYF0 Visits (2034)
Have you ever tried to start a BPM server on linux only to be greeted by the following incomprehensible error?