Oracle Application Express

Frequently Solved Problems/FAQs with Application Express 3.0

Frequently Asked Questions

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  • 1. Incomplete page when editing a page in Application Express 3.0

    If your page definition looks like the image on the left, use Shift-Reload (Shift-Ctrl-R) to get all the data Application Builder to display. This is needed to clear the cache and bring down the latest CSS and JavaScript that the interface is depending on.

  • 2. Seeing some 'not found' icon placeholders (like for Shared Components)

    You need to update your images directory as part of the post-installation tasks. The "images" directory contains new files that are relevant to the new 3.0 version - not only icons but also new CSS files, JS files etc.

  • 3. HTML tags and markup appear in the page

    The PL/SQL Web Toolkit 10.1.2.0.6 or greater must be installed in your database. Please review the readme.txt file in apex/owa for installation instructions.

  • 4. Garbled characters or question mark characters are displayed on the page

    Confirm that the character set portion of the PlsqlNLSLanguage parameter in the Database Access Descriptor (DAD) for Application Express is AL32UTF8.

  • 5. Having trouble viewing weekly and daily calendars added to an existing application

    If your application was created using version 2.2 or before, it is missing the new Calendar template attributes necessary to render the Weekly and Daily calendars. You can either 1) manually update the Calendar template used by your application or 2) create a new theme from the repository and switch to that theme. The new theme will have the full complement of templates used in 3.0.

  • 6. Apply Changes failing with ERR-3331

    If you are developing an application and see: 

    ERR-3331 This page was already submitted and can not be re-submitted.
    after you Apply Changes, go back to the page you were editing and do a Shift-Reload (Shift-Ctrl-R). After that, you should be able to make your change without issue.

  • 7. Application Express and the embedded PL/SQL gateway

    Oracle Application Express will utilize the embedded PL/SQL gateway as the default Web server in Oracle Database 11g. While configuration with Oracle HTTP Server and modplsql will still be supported, the default supported configuration for Application Express in Oracle Database 11g will be with the embedded PL/SQL gateway.

    Until Oracle Database 11g, Oracle Application Express with the embedded PL/SQL gateway is not a supported configuration.

  • 8. Flash Charts - only ASCII text can be rotated

    Only ASCII text can be rotated in Flash charts. This is a limitation of Flash, which can only rotate text using an embedded font. If you attempt to rotate non-ASCII text, the text will not display.

    If your chart contains non-ASCII characters, there are several options to avoid overlapping text. You may be able to use a Horizontal, instead of Vertical, Column chart, or use the Omit Label Interval attribute to reduce the amount of text shown in the chart. Alternatively, you can increase the overall area for your chart by increasing the chart's width and height attributes or decreasing the chart margins.