File browse issues

HI
first:
I have a form which contain file browse and i have in this form select list with submit ( i use submit to populate another select list)
The problem is : when the select list do submit the path in file browse disappear so i have to choose the file agian
what can i do to this problem?
second:
i want to make a link to file that exist in database in a report,when i click the link the file will download, how can i do it ?
Thanks in advance

Excalibur,
There's not much you can do about the first issue other than change the way the select works. You're having it submit the page for something - why not make that an Ajax process? Then no submit would be needed so no value would be cleared out.
As for the second, start with this:
http://www.oracle.com/technology/obe/apex/apex31nf/apex31blob.htm
Regards,
Dan
http://danielmcghan.us
http://sourceforge.net/projects/tapigen
You can reward this reply by marking it as either Helpful or Correct ;-)

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Open Cursor Issue because of file browse Item - Is this a Bug in APEX 3.2

Hi All,
I am using file browse Item to upload file into the database at two places in my application, but it seems whenever I am submitting those two pages, with file path or without file path, its opening an cursor which remains open after that, because of this open cursor count in the application is getting exceeding every time.
For testing this I have made an dummy page containing just file browse item and submit button, and still it is increasing the open cursor count.
Is this a bug in Apex file browse item or there is some other way to handle this.
Please kindly help me in the above issue as this is affecting the production application.
Thanks & Regards
Sanjay
Edited by: user11204334 on Dec 5, 2010 9:57 PM
Edited by: user11204334 on Dec 5, 2010 9:58 PM

Hi,
One observation, Apex is switching the Session ID after one got killed ? I was working on Apex page with browse Item to test open cursor count,
after killing the SID (227) on which the open cursor count was getting increase, it APEX automatically switches to new SID(149) for that session.
Now the problem is even if I have two SID's and one hits the maximum open cursor count, It is not switching to other SID instead the whole application becomes unavailable.
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opened cursors current 20 14 APEX_PUBLIC_USER
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Please kindly help in this.
Thanks in Advance
Thanks & Regards
Sanjay
Edited by: user11204334 on Dec 8, 2010 1:02 AM

Different issues with file browse item

Hi everybody,
I'm trying to create a file upload page using the file browse item. To achieve this I followed the how-to document :
http://download-west.oracle.com/docs/cd/B19306_01/appdev.102/b16376/up_dn_files.htm.
I've created my own table to store the documents as I store some extra information.
When I test this functionality I discovered many issues.
- If I upload a PDF file this gives me HTTP 404. When I go back, choose the same file with the browse button and upload again this will pass.
- If I upload a file with spaces in it's name this file will be uploaded twice. (I see the same file two times in the table with 2 different names.
- At random times I will just arrive at a blank page after clicking the upload button. It appears to me as this will happen more often when I use a double-click to select the file in the browser dialog compared to selecting the file and clicking open. However, I suppose this is just coincidence. It happens in both cases. I'm confronted with the problem with small files (1k, 4k) as well as with larger files (6m)
- Like I said before, I store some extra information as well. In some cases this information is stored with the document. In some other cases he takes the description from a previous document to store along with the new document. I suppose this is some kind of session problem probably caused by the other problems I currently have and the fact I press back quite often in my browser (each time I arrive at a blank page)
Version of HTML DB 2.1.0.00.05
(Included with Oracle 10g express edition)
I read several posts on this forum before creating my own thread.
-> I found several discussions about the size of the file but the problem exists for files of 1K as well so I don't see a link with those discussions.
-> I found several discussions about security and tablespace quota. I granted unlimited tablespace to each and every user : flows_020000, flows_020100, flows_files, htmldb_public_user and the user who is used in the application.
Tx very much for your help!
Kris

Hi Kris,
I think you're problem is coming from local session info... using the back button is not that good. Put a back button in your application ;-)
An other thing I wonder is; are you developing and testing on the same machine and at the same time? - I did that before and that gave me some problems. Now I'm developing in Firefox and test with IE or vice-versa.
Dimitri

File path control: invoke file browser activation

Hi there,
on the front panel of a vi I want a file path control to open automatically the file browser window when the user clicks into the path control. Is there any way to do that programmatically after the mouse down event has been fired? I couldn't find a suitable method so far.
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Solved!
Go to Solution.

I should point out that the mechanism you (I am referring to the OP) are proposing is counter-intuitive. Web browsers have started to do this, but they do it claiming security issues. Frankly, I think the security concern is small compared to the annoying change in normal behavior, but that's my just my opinion - I can't change the way Firefox or IE works.
Do you not have the Browse button visible for the control? Clicking this displays a file browser. This is normal and expected behavior.
Message Edited by smercurio_fc on 07-03-2009 09:21 AM

Default location for file browse dialog

OK, I know this is not solely an APEX issue, but is there a way that one can specify a starting location when invoking the file browse dialog?

I don't think there is a possibility to modify the file browse item. It is a security issue.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
http://www.amazon.de/Oracle-APEX-XE-Praxis/dp/3826655494
-------------------------------------------------------------------

How to know if a file browser item is not null using javascript fucntion

Hi
 
I tried to use javascript for validation. I have a file browser item named P55_FILE_NAME and I would like to know if this item is null or not before submit.
 
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} 
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Hello,
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(Please follow Scott's advise, and keep your logic connected issues on the same thread. It will get you more quick and accurate help).
Regards,
Arie.

IWeb pages reverting to older version- not a browser issue, deleting prefs/caches no help

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File Browse moving files

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Hi,
I know this does not answer your question, but look at this Ask Tom post:
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:1011065100346196442
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File Browse encoding bug

Hi! Searched through Known Issues but haven't found anything like this:
Apex Listener 1.10.179.10.43. Tested on both Tomcat and Glassfish.
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I've tried to fix it with filter (described in Re: Accentuated characters problem but no success(((
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solved with setting Server java parameter
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"File Browse" type item: at what point the fields mime_type, file_name, last_update_date get their values?

Hi there,
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I would appreciate any advice on this...
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Hello Tanya,
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File Browse Item questions..

Hi all..
Please help me with these questions on ""file_browse"" item.
I have a file browse item on a page, like in the following app.
http://apex.oracle.com/pls/apex/f?p=62812:1
1) when the user select a file with the browse button,we will get the
"""file path""" in the text field.
Is it possible to validate (via javascript or any other way), whether that particular
""file path"" is correct and a valid file exist as per the ""file path""??The reason for this validation is, sometime our users will copy the ""file path"" instead of using the
file browse button.
2) http://apex.oracle.com/pls/apex/f?p=62812:1
If users enter a valid path, but on that particular page if i have any validations,
If any of the validations fails, it is clearing of the ""file path"" that the user entered.
Is it possible to retain the ""file_path"" that the users entered? even if any validations fail?EX: In the following page
http://apex.oracle.com/pls/apex/f?p=62812:1
Please
i)select a valid file from the ""file browse"" item and
ii)""dont select any select list "" value
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validation will get fired and file path get cleared.
Thanks

kumar wrote:
Thanks for the reply fac...
fac..just curious to know, what security issue do any one get , if file browse item keeps the ""file path"" they previously selected..The issue is not the server keeping the file "previously selected", but maliciously changing the value to capture a file the user does not intend to submit (e.g /etc/passwd) when the invalid page is resubmitted.
so every time, when some validation fails, ""user need to reselect that file"".??For their own safety, yes.
even it is in session state.. for a common user,he feels that it got cleared out and need to ""reselet "" the file again..It's a good practice to clean up any submitted files in APEX_APPLICATION_FILES should any related validations fail.
Is there any other alternative for this issue? or It is (file browse item) just how it behaves?To ensure a secure and safe web environment it's how it's got to behave.
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File Browse Item in APEX versions prior 4

Hi there,
we are currently struggling with a strange issue concerning the File Browse Item in earlier APEX versions: The item value is not submitted correctly when using APEX Listener. There is always a F<randomnumber>/ as prefix that is not visible anywhere in the page source code (so it's not generated by APEX itself) or browser (Firebug trace didn't see any prefix transmitted) and this value is even there when the file browse dialogue is submitted empty. The latter case causes severe problems, as validations fail to detect null values. Our current workaround is a regex on that prefix, but this obviously is no clean solution.
We found out that F<randomnumber>/ is the prefix of the name that is created temporarily in WWV_FLOW_FILES. If submitted correctly, the name is prefix + actual filename.
This problem does not occur when using OHS and it does not occur when running the APEX Listener on top of APEX 4.0.2.
The problem occurs reproducible in the following environments:
- APEX Listener 1.1.2 standalone or any JEE Container, JDK 1.6.0_26, Linux or Windows
- APEX 3.1.2 or APEX 3.2.1
The problem seems to be related to the one discussed in {thread:id=2205973}, but describes some different effect that is not reproducible on OHS.
I appreciate every clue where this may come from and any hint on how to turn it off...
Thanks,
Udo

Hello Claudio,
After reading this story, I have same problem with version 1.1 of the apex listener and version 4.1 application express.I still think it affects only versions prior to 4.0. I'm not able to reproduce it on 4.1.
How do I resolve this problem?I think you ran into a bug in GlassFish 3.1.2. This has been discussed and resolved here: {thread:id=2357381}
I hope this helps you solve your problem.
-Udo
P.S.: Please always open a new thread if you are not sure you are in the same situation and especially when the original thread is long "dead" like this one. Of course you can reference other threads with possibly similar issues in your thread.
Thanks!

Restricting length of file name of the file to be uploaded in file browse.

Hi,
I have got a file browse item. When the file name is more than 74 characters, it goes to an error page. Can this be avoided?
To prevent this, I tried using a javascript
function doSubmitWithProgress()
if (document.getElementById('P202_FILE_INPUT').value.length > 70){
alert('File name should be less than 70 characters in length.');
object.focus();
else
{$x_Hide('wwvFlowForm');
$x_Show('InProgress');
doSubmit('UPLOAD_FILE');
But this is considering the path of the file as well and hence causing an issue.
So could you please help me out with this issue.
If there is a way to avoid going to error page if file name is big that would be great. Otherwise, if there is a way to check just the length of the file name and trigger an alert if it is more than 70 characters, that would help me too.
Thanks,
Vignesh

The issue is that this code
// Now create an array that contains the individual pieces of
// the file name split on the "/" boundaries
var myArray = fileName.split('/');has the wrong path separator for Windows. Use backslash instead:
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// the file name split on the "\" boundaries
var myArray = fileName.split('\\');double backslash is necessary because '\' is the JavaScript escape character, so it needs to be doubled to indicate that that is the character we want.
However, also be aware that for security/privacy reasons recent versions of browsers do not expose the file path via the .value method. Firefox, Safari and Chrome only provide the filename. IE6 & IE7 yield the path in Windows format. IE8 and Opera, in an effort not to "break the web" (i.e. to bend over backwards to keep poorly coded and non-interoperable Windows sites working) have adopted an irritating approach of replacing the path with a wholly imaginary "C:\fakepath\".
So your validation may have to cope with up to 3 scenarios, depending on the browsers that need to be supported: only get the filename (FF/Safari/Chrome); get the full path (IE6/7/8 in some security configurations/older versions of all browsers); get a fake path (Opera/IE8 in other security configurations).
For more information see:
http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2009-March/018980.html
http://blogs.msdn.com/ie/archive/2009/03/20/rtm-platform-changes.aspx
(In 2009 MS are still concerned that pathname segments are limited to 8 characters?)

File Browser doesn't display when Flex page is opened via showModalDialog IE9 on 64-bit system

From a html page, we open a flex page using showModalDialog.
Once flex page is launched, we have a button to open windows file browser.
When you click on the button, windows file browser opens as expected.
However, if you use IE 9 on 64-bit machines, windows file browser does not open and IE crashes.
If you use other versions and even IE9 on 32-bit system, file browser dialog shows up correctly.
When examining in flex code, the call to FileReference object's browse() returns true so I'm assuming Flex code is thinking browse window is opened.
We do not want to use showModalessDialog, is there any other soltuions to this issue?

From a html page, we open a flex page using showModalDialog.
Once flex page is launched, we have a button to open windows file browser.
When you click on the button, windows file browser opens as expected.
However, if you use IE 9 on 64-bit machines, windows file browser does not open and IE crashes.
If you use other versions and even IE9 on 32-bit system, file browser dialog shows up correctly.
When examining in flex code, the call to FileReference object's browse() returns true so I'm assuming Flex code is thinking browse window is opened.
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