get along with Oracle and APEX » Questions

Question: How to refresh an APEX SQL Report from JavaScript

Peter Raganitsch — Tue, 06 Apr 2010 06:52:24 +0000

Nowadays everything should be interactive and Web2.0 and AJAX, and again the Oracle Application Express Development Team has prepared something for us, that makes it easy to give our APEX Applications that interactive touch.

Imagine a SQL Report Region (“Classic Report”) and a button next to it. In front of the computer is a nervous user who waits for a certain record to appear in his Report (e.g. this months salary in his bank statement).

So what is he doing? The nervous finger. Clicking the refresh button every 10 seconds. And everytime he clicks the button, the page is submitted and loads the new data. But this Page submitting and reloading takes some time and flickers, which makes our user even more nervous.

Better and faster would be refreshing the report without submitting the Page, looks smooth and totally Web 2.0.

APEX has a JavaScript function $a_report(pId,pMin,pMax,pFetched,pSort) which reloads the reports data and displays it without resubmitting the whole page.
pId is the ID of your Report, pMin and pMax are the RowIds to display, pFetched the number of Rows and pSort can hold some sort clause.

e.g. javascript:$a_report(‘15520013154312712′,’1′,’10′,’10′);

Now all you have to do is put this javascript call into your Buttons Target

And make sure that your Report is set to “Enable Partial Page Refresh”, this is needed to make sure that $a_report knows what to do.

Question: apexlib not defined

Peter Raganitsch — Thu, 25 Mar 2010 06:49:22 +0000

One of the most common errors, and yet not sufficiently answered…

After Installation of ApexLib and Integration into your Application you are all eager to get it running, but all you get is an error in Firebug saying “apexlib not defined”.

ApexLib not defined? What can cause that?

The main JavaScript File of ApexLib (ApexLib_Full-min.js) can’t be found, or
the javascript File wasn’t included

At first we check Firebug’s Network Tab to see if the Javascript File was found:

As we can see in the picture, ApexLib_Full wasn’t found, but at least we tried to load it ;-)

So lets check the Region “ApexLib – Javascript/CSS” on Page 0 (that’s the place where we include the ApexLib Files by default).

And there we found it: a simple typo in the Filename “ApexLib_Full .js” where it should read “ApexLib_Full-min.js”.

Question: Can’t get APEX Workspace Login Screen, just internal

Peter Raganitsch — Mon, 25 Jan 2010 11:05:19 +0000

This is the first mini-Post from my Blog Series “You search, we answer“.

A common problem after installing Oracle Application Express and configuring a workspace in the Admin/Internal Area is not finding the Workspace Login Screen.

The thing is with http://127.0.0.1:8080/apex/apex_admin you only get the Administrator Login:

If you want to get to the Workspace Login Screen, simply remove /apex_admin from your URL: http://127.0.0.1:8080/apex

You got any Questions?

Peter Raganitsch — Mon, 25 Jan 2010 11:04:29 +0000

As i was checking my site stats the other day i stumbled across the section “Last search terms” and found there many questions. Obviously people were looking for an answer and somehow landed on this blog.

That, i figured, should be rewarded.

So i’m opening a series of blog posts which deal with those Questions and provide all 2-3 weeks a short answer. Short and to the point (i hope).

Of course i recommend asking questions on the official (and very active) Forum, but some things are better explained in a blog with one or to pictures for illustration.

And now, if you want to ask something, just drop a comment or search for it :-)