How can I navigate to a new page when after-submit process running proc

Question

I have a long running procedure and would like to provide the users with an animated gif to indicate progress that updates a description line to indicate the current step in the process.
Currently I have a couple pages in this application in which a stored procedure in a package is called which performs a long-running process which updates progress in a table. These processes have a single parameter argument. In these cases I call the procedure via the Job Scheduler as part of my After-Submit process and the page navigation jumps to another page which shows a graphical representation of % complete based on the progress updates in the table and refreshes itself every 5 seconds until the job is complete. This works fine.
I am now running into an issue where I have a more complex set of processes, with a number of parameters. To resolve this I used the same process as above, however, I first check to see if the process exists in the Job Scheduler, if not I create it. I then set all of the parameters and tell the job scheduler to execute the procedure. This should work similar to the process I am running on the other pages, however, in this page where I have multiple parameters and send an execute command rather than an execute immediate on job creation, the system runs the entire job prior to running the page branch, as a result the end user is stuck on a hanging page with no user feedback for two minutes after pressing submit.
I am looking for how to call the procedure and have the branch execute so a progress screen can be viewed. I am not committed to the use of the job scheduler if there is a better way.
Any help is greatly appreciated.

Answer 1

The process involves
(1) a detail table filled with phone usage data, approximately 175,000 records per month.
(2) a table that stores what various combinations of codes in the detail table translate to for types of calls or data transmissions
(3) a summary table for the months calls and billing
(4) the E-Business Suite.
(5) A GTT for temporary crossreference storage
(6) A GTT for reporting data
I have a parameter page where the user selects what data they are looking for and then submits it to generate the report.
The generation of data is a four step process.
(A) Retrieve the Code Combination ID's for the phone usage specified in the parameters from the summary billing table(1) into a GTT(5)
(B) Query the department and Account Code Block Details from E-Business Suite(3) (using dblink) for the CCID's in step one and add to the GTT(5)
(C) Run a query which uses the detail table(1), a function against the crossref table(2), and the crossreference GTT(5) to create the output in the report GTT(6)
(D) An ApEx page process that counts the output and returns to a page without Export to Excel for over 65000 records or with Export for under.
The parameter page is an ApEx page with some text fields, a couple date fields, and some checkboxes. An after submit process calls a packaged procedure which calls separate procedures for (A), (B), and (C), the page then branches to a page that shows an animated gif and current step of the process {this is what is not working right now}. Once the task completes this page branches as per (D) to a page that shows all the contents of the GTT report(6).
The process works successfully with the exception that instead of going to a page to show the process the system simply hangs on the parameter page after the submit is pressed until the processing is done and then goes to the processing page just long enough to branch to the report page.
I am beginning to think that I should alter the design to not use the GTT, but include the username as a field in the output table with a binary index on it for speed so that I can use the job scheduler to run a separate session and hence enable the processing page. The processing page is important as the query can take anywhere from 2 minutes to 2 hours to generate the report depending upon the parameters.