How to get a web browser gets updated automatically

Hello, I am a new person with weblogic application and I am told to use weblogic to develop an application at work. Basically, I have a web portal which needs to query the oracle database for new data (the data will be comming into the DB continuously, let's say every 5 seconds) I got a web portal which connects to the DB and I am able to retrieve data from there. Here are some things that I don't know and still wonder
1. I am thinking of using the Timer control in weblogic to create a timer thread in order to keep querying the DB continuously every 5 seconds. Is this the good way to do? If so, how do I make the browser automatically update the new data?
2. Or I can write some Javascript to create a Timer in the web browser with start and stop button in order to control the Timer. If I write a timer javascript, how do I call the query method from the controller to get data from the oracle database.(I have the get() which returns me everything from one table)
I am very new to this weblogic. I appreciate every help from you
Cheers
TL

Hi Ken,
            paste the URL in browser and get a XML code (DTD ) and give back to them.

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