Beans loses data stored

Hello,
i'm developing a java application in EP 5.0 and i'm using Beans and jsp.
When i load the iview, there are 2 dropdown list box filled with the data stored in the beans. These beans are filled throught a BAPI.When i make a selection in the dropdown list, and i press a load button a tableview is filled with data.But Sometimes the dropdown list box loses the data stored and appears empty, without data
Somebody can tell why this dropdown appears empty??, the bean loses the data??? have caducity the beans???
In the .jsp i'm using the scope option APPLICATION.
Thanks. I wait your help!!!!

Hi,
i think the reason the beans lose the data could be that the server needs resources and empties the beans to catch resources.Is that possible??
And another question, how can i manage the cache or the resources that my pages need?? an dhow can i manage the users that access to this pages??? I ' thing that the reason that the system needs resources might be that many users access to the pages at the same time...
Can somebody help me???

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At that point, I think a better explanation of my purpose could be helpful. What I'm trying to do is just create a simple page with a command button, and in its action method get all the data stored in the rows of the table. I've seen a possible solution that I understand:
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iter.setRangeSize(-1);
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Hi,
Thanks for Replying. I have refered http://blog.oraclecontractors.com/?p=69 and then i added that piece of code. Basically, i'm trying to generate a report using XML publisher. To generate the XML data i'm writing a pl/sql package with SQl/XML functions. DBMS_XMLGEN would help me convert the XML Data as is. When the concurrent program runs this XML data will merge with RTF layout and generate required report. I'm able to generate the Report for data less then 32767 bytes. More than the limit i need to pass chunks of XML data to read as output. That's the reason i'm using fnd_file.output. But it reads only 32767 size at a time.
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Edited by: 943783 on Dec 14, 2012 12:58 PM

See XML updating functions : http://docs.oracle.com/cd/E11882_01/appdev.112/e23094/xdb04cre.htm#i1032611
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