Websphere Portal FAQ - Part III


Here goes the third list of common FAQ's on WebSphere Portal.

Q1. When using WMM (WebSphere Member Manager) where are Application Groups stored?
  • WMM stores the group information in database tables:
  • WMMDBMBR stores the group names.
  • WMMGRPMBR stores the name of the group members for Application Groups.
  • WMMMBR adds an entry for users or groups registered through the Portal no matter if they were added to the LDAP or Application Groups.
Q2. What are the default parameters created by WCM searchable sites for search collection content sources ?

When we configure a WCM site to be searchable, a Managed Web Content site content source (in the specified search collection) is created for you with the following parameters read more.

Q3. Is it possible to have two portal server instances on single Linux box with existing WAS ?

Yes, it is possible to have 2 portal server instances on single Linux box and here are the steps to achieve this scenario.
  • Install the first portal instance on your linux box. Here is a link.
  • Verify your installaton by hitting the portal URL as well as application console URL.
  • Before installing second Portal Server instance make sure that all the applications on that linux box have been started so as to avoid any port conflicts.
  • This second portal installation will be using an existing WebSphere directory with an existing instance of WebSphere Application Server.
 Q4. Which property needs to be changed in WPS  to display a custom page after logout ?

To display a custom page after logout, use the property redirect.logout.url in the ConfigService.properties file located at \PortalServer\Config\ and set it to point to the custom logout page.

Q5. Different ways to customize a theme?

You may use Inline Theme Customizer or Theme Customizer in Portal Administration.

Q6. Is it possible to enable Parallel Rendering of portlets? If yes, how?

Yes, it is possible to enable this option. You may change it from here:
  • Navigate to Portal Administration -> Portlet Management -> Portlets.
  • Now open the portlet settings by clicking on the Configure icon from portlet menu.
  • Now select the Enable parallel rendering check box option to set the parallel rendering.
Q7. Can I have duplicate node names in a cell in a cluster environment?

No, you will need to rename the node in the deployment manager using IBM WebSphere Application Server command, renameNode.

Q8. How to activate a portlet?

You can use the following command ConfigEngine.bat activate-portlets

Q9. What are administrative portlets?

Administrative portlets include all of the portlets that appear on the administrative pages when you navigate to Administration.

Q10. Is there another way to import XML besides using command prompt?

Yes, you may use Import XML portlet. Just navigate to Administration -> Portal Settings -> Import XML.

Q11. Explain different phases of portlet life cycle?

Portlet life cycle has following phases read more.
    Q12. What are different Portlet URLs and their usage?

    There are 3 types of portlet URL's available in portlet API
    • Action URL - used for performing actions i.e. submitting forms. Directly invokes the action method of portlets.
    • Render URL - invokes only the doView() method of portlet lifecycle.
    • Resource URL - used to make Ajax calls and for serving external resources (PDF files etc).
    Q13. What is the difference between JSR 168 and JSR 286 portlet specifications?

    The major features introduce as part of JSR 286 specification are portlet events, public render parameters, resource serving and portlet filters.

    Q14. How to achieve inter portlet communication in JSR 168 portlets?

    The IPC in JSR 168 portlets can be done either using Dyna cache or shared libraries.

    Q15. Is it possible to create a DB connection in render phase of portlets?

    Yes, it is possible to create DB connections in render phase of portlets. But it is not recommended because it may result in stale DB connections because of page refresh every time portlet is changed.

    Q16.Name the portlet modes supported by JSR 286 specification?

    Different modes supported by JSR 286 specification are view, edit and help.

    Q17. Name the portlet states supported by JSR 286 specification? 

    Different portlet states supported by JSR 286 specification are normal, maximized and minimized.

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