Htmldb/wwv_flow.accept error page not found

Question

opening page htmldb/wwv_flow.accept error page not found
Application background
there is a button for getting a file which triggers some unix script to get file from ftp server.
it runs this pls sql package begin dbms_scheduler.run_job('PROD_GET_SL_FILES'); end;
After it gets the file and loads them to the database using sql loader then it zipp and email the files, after this process the next thing is to display the page with the message "Success: SL Files Zipped and Emailed"
It does every thing but to dispaly that message , then after some time i get
page not found and the page is "htmldb/wwv_flow.accept "
Other thing i noticed is it sends me an email with zipped files twice, the first one has attachements of the files the second one without attachement
I run oracle apex on oracle 10.2.0.1.
It has been working fine untill last two weeks i am getting
opening page htmldb/wwv_flow.accept error page not found
I tried to flush the shared_pool but no luck.
On the logs /u01/app/oracle/HTMLDB/Apache/Apache/logs
i see these errors
[Mon Jul 28 16:30:10 2008] [warn] [client 12.118.0.71] mod_plsql: Long running URL [pls/htmldb/f] timed out
[Mon Jul 28 16:35:12 2008] [warn] [client 12.118.0.71] mod_plsql: Long running URL [pls/htmldb/f] timed out
please help....................

Answer 1

I am DBA, let me tell what this application does , there is a button for getting a file which triggers some unix script to get file from ftp server.
it runs this pls sql package begin dbms_scheduler.run_job('PROD_GET_SL_FILES'); end;
After it gets the file and loads them to the database using sql loader then it zipp and email the files, after this process the next thing is to display the page with the message "Success: SL Files Zipped and Emailed"
It does every thing but to dispaly that message , then after some time i get
page not found and the page is "htmldb/wwv_flow.accept "
Other thing i noticed is it sends me an email with zipped files twice, the first one has attachements of the files the second one without attachement.