I was attempting to implement the standalone version of Oracle Apex Listener 2 – and getting blank pages.
Prior to this I was successfully using EPG ( embedded PL/SQL gatway) to access Apex but changed to take advantage of PDF printing in APEX Listener 2.
Problem was page kept coming up blank – and all the forums, google, metalink etc. tried to tell me it was a problem with not pointing to the images.
Well I knew I was pointing to images correctly. Here is the command to explicitly start Apex Listener 2 and point at an images directory in standalone mode:
java -jar apex.war standalone –apex-images D:\app\Apex422Setup\apex\images
After a couple days of googling, and using metalink (this fix was not in metalink …) I finally I found a forum that got to the source of the problem (http://localhost:8080/apex displaying a blank page) – an Oracle / Apex 220.127.116.11.11 specific bug.
Bug # is 16760897. Fix is in patch # p16760897_422_Generic.zip. The problem probably rears it’s ugly head no matter how you deploy the listener, standalone, glassfish, and Weblogic… I believe.
Also you can get Apex 4.2.2 to display the login page without the patch by using the following form of the url:
Once you hit this URL the problem goes away until the cache is cleared – only a temporary fix. Or you apply the patch.
SQL> select * from apex_release;
Hope this helps, Mike