A Bug in "Print Attributes" tab in IR?

Question

Project Environment:
Database: Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
Apex : Application Express 3.1.1.00.09
Also....: apex.oracle.com
Problem scenario:
I created an Interactive Reports (IR) in my project and tried to configure the "Download" PDF. It worked fine on "Classic Report". But for IR, it never worked. I'm facing multiple problems. They are:
A. PDF report is blank.
B. Sometime Acrobat Reader says "could not open <file name> because it is either not a supported file type or because the file has been damaged...)"
When open the same file in a text editor, I can see the following:
ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "FLOWS_030100.WWV_FLOW_RENDER_QUERY", line 636
ORA-06503: PL/SQL: Function returned without value
I then thought I could be missing something in the config. So wanted to create a sample IR in apex.oracle.com and see what happens. The following is the result:
Notes:
A. Please use IE to test this. Also untick "Disable script debugging (Internet Explorer)" from "Tools->Internet Options->Advanced". It works ok in Firefox, I believe.
B. You can simulate this in apex.oracle.com (at least I was able to!!)
Steps:
1. Create an IR as normal. Say, App ID=46305, Page ID=6 and Region Name=Sample Interactive Report. Dont configure the "Print" settings yet.
2. Once done and tested to see if it works ok.
3. Now open Page (6) where you have the IR and click on the name, i.e. "Sample Interactive Report".
4. We get "Edit Region" page with three tabs:
a. Region Definition (current tab)
b. Report Attributes
c. Print Attributes
5. Click "Print Attributes" tab
6. Because the "Disable" flag is unticked (as per the note above), this will pop-up an error message:
A Runtime Error has occurred.
Do you wish to Debug?
Line: 1
Error: Object required.
7. You can choose "No" to ignore it. But I tried "Yes" to see what the error is. The error is in the line:
document.getElementById('P774_PRINT_FORMAT').value!='%null%'
Clearly it is going to P774 and doesn't find P774_PRINT_FORMAT field and so the error. Is there a fix? How come it is not giving error in Firefox? Or should I enable / disable something in Firefox o get this error? And the most importantly how to avoid this error?
8. Further on... if you go into "Report Attributes" and click the edit button on one of columns and then click "Print Attributes" tab, it goes to P960 and no errors!!
9. Why does "Print Attributes" links from the main tabs (Report Definition and Report Attributes) go to P774 and from "Dynamic Query Attributes" goes to P960?
10. Also, In P960, the "Report Columns" section says "Report returned no rows.". Is this normal in IR?
Ultimately, although I can configure my Apex to use "BI Publisher" installation to create my PDF outputs from "Classic Reports", I couldn't do from IR.
Seeking Answers For:
1. Why PDF output of the IR report produces 0k file (and so blank report) when the screen displays records? This is common in my project as well as in apex.oracle.com. What am I missing?
2. How to get rid of "ORA-06512: at "FLOWS_030100.WWV_FLOW_RENDER_QUERY", line 636"?
3. Is there patch for this conflict between links accessing the "Print Attributes" pages (P774 and P960) as explained in the "Steps" above.

Answer 1

Hello,
The error
2. How to get rid of "ORA-06512: at"FLOWS_030100.WWV_FLOW_RENDER_QUERY", line 636"?you can also find in the new features application. I wrote a post about that some days ago:
Bug in New Features Application?
Had some trouble to get the PDF print working, too. Printing works fine for standard reports, but for interactive report I am not able to get it working. Sometimes I am getting only blank pages (and no file) and sometimes I am getting PDF's which just contain an internal 500 error. Some details are in this thread: Print Interactive Reports does not work
Maybe that's related to the error of kkkannan74.
Regards, Tine.