File Uploading in Apex

Hi ,
I am really new to this concept i never tried it before. now i want to create one form which having file browse field . if user enter the data and upload the file then the user press the create button it ll go and save it to my table.
Then i have to create a report,In report the file column shows as a link if user click a link it will give the exact file which he /she uploaded.
Example table is EMP table
i created a form as well as table also i added one more column for file as BLOB type. when i press the create button there is no error. but i checked in my table there is no data in tht field.
i try to create a interactive report but i cant add this column. (file column).
How to do this??? any suggestion and Links please
Cheers,
Shan

Hi Andy,
This also working fine.I am very new to Apex. From last week only i started to learn.
Thank you very much Andy bcz i learnt many thing from you today. I hope you will help me to learn more in Apex.
Cheers,
Shan

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Excel file uploading In APEX

Hi ,
I have requirement to upload the excel file into my table. I followd the below link
[http://avdeo.com/2008/05/21/uploading-excel-sheet-using-oracle-application-express-apex/]
But the problem is they mentioned only for *.CSV* file i want to do that for *.XLS* file
i dont want to change it as .CSV.
Can anyone help me out.
Cheers,
Jaya

There are java libraries that you can load into your database to handle the processing of the xls into a format that can be used to insert into your tables, but it would be MUCH easier to just explain to your client the need to have them save the data into a CSV style file..
(Here is an article on how to do this in the database.. [http://www.oracle.com/technology/pub/articles/saternos_tables.html])
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Tony Miller
Webster, TX

Failed to load source - file upload post

Hello All,
I'm trying to implement an AJAX type of file upload. I'm using Sencha's upload form which creates an iframe on the go(this si doen with the parameter fileUpload true). This should take care fo the mechanics involved in AJAX file uploads inside APEX.
I can see an attempt to upload the file but then I get the response:
Failed to load source for: http://jsnotions.homelinux.com/apex/wwv_flow.accept?p_flow_id=124&p_flow_step_id=1&p_instance=1971193010922945I tried creating a branch on the page to branch to another page which has an On Page Process - On Load Before Header which returns a JSON formated message.
BEGIN
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END;Oddly enough when I check the APEX view I see that the file has not been uploaded to the APEX server. Can anybody offer some advise or a solution to AJAX file uploading inside APEX.
Thanks in advance
Jan

Hello All,
I'm still trying to crack this one. Getting the following error.
More files were uploaded in this request than the number of file item types defined on the page.I'm using an javascript extension whihc creates and ifram through whihc I'm uploading the file. That seems to be configured properly.
As for the page setup, I've tried several variations and none seem to work.
I tried to create a file browser item, and set some hidden html class on it. Then when I use the javascript uploader, I set the value inside the file browser($s('P1_FILENAME', myval)), this was to get over previous errors of
failed to load sourceNow apex doesn't like that as well, so I'm thinking its just not possible to do a clean javascript file uploader. I guess the only option now is to create a separate page, hide the items and display it into an iframe.
Any thoughts on fileuploader with javascript inside APEX? Oh, almost forgot to mention that I'm using the fileuploaderfield from sencha.
Thanks
Jan

Apex application file -upload and download a file.

hi
im having an issue with an application i created,its about uploading and downloading a file in application.the application is working and was able to upload and download a file but i have not idea there the file is stored in the application database,try to search for the file,its something dealing with the apex_application_file and i cant find it.
Any idea where the file is stored?
thnx
nivesh

Dear nivesh!
If you upload a file into an APEX application the file is temporarily stored in the APEX_APPLICATION_FILES table. If you close your current application page the APEX_APPLICATION_FILES table will be cleared. You should create your own table to store files in a BLOB column. I've create an example for uploading images into an APEX application on apex.oracle.com. If you want to have a look at it please use the following credentials:
Workspace: flo_demo
Username: dev_null
Password: password
Application: 61811
Yours sincerely
Florian W.

No of Columns limitation for file upload APEX 4.1

Hi,
I am using apex 4.1 file upload wizard to upload csv data.My csv file contains 58 columns that i have to insert into table.
when i proceed with the wizard and inserted records into the table. only first 46 records has been inserted.
Also, data\table mapping form also shows only 46 columns for column mapping.
Is there any column limit to file upload?
Can you help me on the same?

Hi Frank,
Yes you are right, the number of columns (through data upload feature) is limited to 46 columns.
Regards,
Patrick

Error on File upload. Error processing wwv_flow.accept.

Hi,
I'm developing an application to upload and download files using Oracle XE 10g and APEX 3.2.0.00.27 on OS Windows XP.
The file upload page is very simple: one file browse item, a submit button and a report based on the wwv_flow_files table.... and an extra button to save the uploaded files in the DB.
Sometimes (almost everytime) when I press the submit button, the wwv_flow.accept process fails and I'm redirected to a page saying Internet Explorer cannot display the webpage.
I'm forced to refresh the page and then I get the following message:
Expecting p_company or wwv_flow_company cookie to contain security group id of application owner.
Error ERR-7621 Could not determine workspace for application (:) on application accept.
I recreated the same page in the apex.oracle.com environment and it works, but it fails in my local environment.
I have read some posts int his forum, but I haven't found an answer yet.
Please help!!!
AUJ

varad acharya wrote:
Download the standalone OHS.
http://www.oracle.com/technology/software/products/database/oracle11g/111060_win32soft.html
varadSorry about this...old post and off topic.
Can anyone point me to a standalone version of OHS for linux x86-64? I'm having troubles finding this, it doesn't appear to have installed with 11g Enterprise Edition and I cannot find it in the available packages when I re-run the installer. I'm running 11g EPG now and want to convert to Apache.
Thanks!!!

Bug? WWV_FLOW_FILES: After File upload FLOW_ID = 0

Hi all,
I'm working on a DEVenabled -Environment with APEX 3.1.2.
Problem
While redesigning an Application I have somke strange behaviour on File Upload:
The application uses a custom auth scheme.
In my application an uploaded file should be moved to a user defined BlobStorage and be deleted from APEX_FILES afterwards.
This does not work any more:
When uploading a file to APEX_FILES using the upload-element from an application no further processing is possible.
What is loaded ?
On wwv_flow_files the FLOW_ID is recorded as 0 and not as the ID of that Application Files have been loaded from.The Attribute 'created_by' contains APEX_PUBLIC_USER where the User logged in is needed.
As it is APEX INTERNAL stuff, which seems not to work as expected, i need some help.
How to fix this ?
regards
Franz

Mark,
what is the workaround for this?I don't understand what you need a workaround for. No workaround was given for any actual or perceived problems discussed here so far. I proposed that the proper steps are to upload to, copy from, and then remove from the public table.
I started having this problem, where the flow_id and security_id are now coming up as 0You started having it at a point where you were not having it previously? That isn't very clear. You are implying that flow_id was non-zero at some point, I think.
If security_group_id is 0 then this isn't the same situation as we've been discussing in this thread. Please explain exactly what you're doing and show all related code.
Scott

File Upload/Download

Hi
When using the file upload/download functionality, APEX stores the uploaded object in a table by default. See: http://download-uk.oracle.com/docs/cd/B31036_01/doc/appdev.22/b28839/up_dn_files.htm#CJAHDJDA
Is there a way to specify that the file should NOT be stored in a table, but rather, be stored on the file system?. Example in a directory object location.
I intend to use the upload/download functionality to load csv files that will then be parsed as external tables.
Thanks
Kezie

Hi,
I modified the above procedure to point to my tables and trying to create the procedure in Apex database and am getting the following error:
Procedure:
CREATE OR REPLACE PROCEDURE write_blob_to_file
( p_docid IN NUMBER,
p_directory IN VARCHAR2,
p_filename IN VARCHAR2 DEFAULT NULL )
IS
l_file utl_file.file_type;
l_buffer RAW(32767);
l_amount BINARY_INTEGER := 32767;
l_position INTEGER := 1;
l_blob BLOB;
l_length INTEGER;
l_filename VARCHAR2(400);
BEGIN
SELECT BLOB_CONTENT, MPP_name
INTO l_blob, l_filename
FROM MPP_FILES
WHERE id = p_docid;
IF p_filename IS NOT NULL THEN
l_filename := p_filename;
END IF;
l_length := dbms_lob.getlength( l_blob );
l_file := utl_file.fopen( p_directory, l_filename, 'wb', 32767 );
WHILE l_position < l_length LOOP
dbms_lob.read( l_blob, l_amount, l_position, l_buffer );
utl_file.put_raw( l_file, l_buffer, TRUE );
l_position := l_position + l_amount;
END LOOP;
utl_file.fclose( l_file );
EXCEPTION
WHEN others THEN
IF utl_file.is_open( l_file ) THEN
utl_file.fclose( l_file );
END IF;
raise_application_error( -20001, SQLERRM );
END write_blob_to_file;
Error:
ERROR at line 6: PLS-00201: identifier 'UTL_FILE' must be declared
4. p_filename IN VARCHAR2 DEFAULT NULL )
5. IS
6. l_file utl_file.file_type;
7. l_buffer RAW(32767);
8. l_amount BINARY_INTEGER := 32767;
Please let me know what am i missing. I am pretty new to PL/SQL and Apex.
Also wondering is there a way to download files from tables using Java Stored Procedure. Please give some pointers.
Ramesh K

File upload demo application in 2.0

Hi!
I implemented the file upload application from the demo applications with the standard table HTMLDB_APPLICATION_FILES. It works very fine. Thanks for sharing this code.
BUT I was unable to implement a custom table, because I could not locate the insert-function (as described in the tutorial). It is no known process on any of my pages.
Could you help me finding it?
(And is a file always stored as blob, or could it be a clob as well?)
My main motive for this question is to gain inside knowledge in building some crude filerepository. We receive plain-ascii-data files via ftp and I have to import their data into a table.
I do not want to go through all this 'reading OS-directory with java, opening files as external tables, moving them with utl_file', if I simply could
a) receive the file directly as a clob in my table
b) get the necessary data with sql
c) handle all archiving, file renaming directly by updating a table
Beside application express's file upload (speaking only http), the is a XML repository which 'speaks' ftp and http.
Does someone have experience with uploading non-xml files and storing them as clobs?
Thanks,
Michael

Hello Michael,
I believe the reference in the demo tutorial is to Insert process (not function). This is probably the process defined on page 8-6, step 4a of the "Create a process to insert information" section.
Basically you can upload and store files in CLOB. For my self, I only did it with XML files, but I don't see any reason not to do it with other types of files.
I think that in order to work with non-structured files (like ASCII) you should learn more about Oracle Text. Apex is also using this product. Search this forum for "oracle text" and continue from there.
Hope this helps,
Arie.

File upload is not working

Hi
The file upload (any kind static/image etc) is not working.
It is giving error "No Data found". This happens only on certain PCs, on other PCs, it works fine.
Have any one experience such issue ? I am not sure how to trouble shoot this, as there are no errors in Apache logs and no record created in wwv_flow_file_objects$.
TIA
DineshS

How does your PL/SQL for the saving of uploaded files looks like? Where does this error happen? Does your process have an error message?
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
-------------------------------------------------------------------

Storing MS-Word and PDF documents in database uploaded through APEX

I want to allow users to upload MS-Word and PDF documents they have created / edited outside of the APEX app for storage in the database along with the other app data.
I know that I should use a file browse item in a region for this purpose.
I have a some questions:
1. What database datatype is best for storing MS-Word and PDF docs? CLOB?
2. How can the user see that the file has been uploaded? In other words, how can they see that the filename has been uploaded? I want to show this on the page for later viewing. I have uploaded a document, but later, I have no way to see that the document has in fact been uploaded. From the APEX page, the file browse item does not indicate whether or not a file has previously been uploaded.
3. How can the user download the previously uploaded document?
4. Is there a way to give users the capability to edit a document in an APEX app where they can do MS-Word-like editing (font size, font type, bold, italics, etc.)?
I know I've asked a lot here and I appreciate your input.
-Reid

In my case, I am uploading screenshots of my application and then displaying them. You can feel free to use it if you want, the code was mostly taken from examples of file uploads posted by others. Here is some code to get you started:
File Table description
CREATE TABLE FILE_UPLOAD
   (name           VARCHAR2(4000) PRIMARY KEY,
    subject        VARCHAR2(4000),
    id             NUMBER,
    blob_content   BLOB,
    mime_type      VARCHAR2(4000),
    PAGE_ID        NUMBER);File Upload Procedure
IF ( :P20_FILE_NAME is not null ) THEN
     INSERT INTO FILE_UPLOAD (id, NAME, SUBJECT, BLOB_CONTENT, MIME_TYPE, PAGE_ID)
      SELECT ID,:P20_FILE_NAME,:P20_SUBJECT, blob_content, mime_type, :P20_PAGE_ID
            FROM APEX_APPLICATION_FILES
            WHERE name = :P20_FILE_NAME;
   DELETE from APEX_APPLICATION_FILES WHERE name = :P20_FILE_NAME;
END IF;Download Image Procedure Definition
CREATE OR REPLACE PROCEDURE download_my_file(p_file in number) AS
        v_mime VARCHAR2(48);
        v_length NUMBER;
        v_file_name VARCHAR2(2000);
        Lob_loc BLOB;
BEGIN
SELECT MIME_TYPE, BLOB_CONTENT, name,DBMS_LOB.GETLENGTH(blob_content)
         INTO v_mime,lob_loc,v_file_name,v_length
    FROM FILE_UPLOAD
   WHERE id = p_file;
    -- set up HTTP header
    -- use an NVL around the mime type and
    -- if it is a null set it to application/octect
    -- application/octect may launch a download window from windows
owa_util.mime_header( nvl(v_mime,'application/octet'), FALSE );
    -- set the size so the browser knows how much to download
htp.p('Content-length: ' || v_length);
    -- the filename will be used by the browser if the users does a save as
htp.p('Content-Disposition: attachment; filename="'||replace(replace(substr(v_file_name,instr(v_file_name,'/')+1),chr(10),null),chr(13),null)|| '"');
    -- close the headers
owa_util.http_header_close;
    -- download the BLOB
wpg_docload.download_file( Lob_loc );
end download_my_file;
/make sure to grant the procedure rights for use by anyone
GRANT EXECUTE ON download_my_file TO PUBLICDisplay Image Procedure Definition
create or replace PROCEDURE "DISPLAY_IMAGE"
inID NUMBER
AS
vMIME VARCHAR2(48);
vLENGTH NUMBER;
vFILENAME VARCHAR2(2000);
vBLOB BLOB;
BEGIN
SELECT MIME_TYPE, BLOB_CONTENT, NAME, DBMS_LOB.GETLENGTH(BLOB_CONTENT)
    INTO vMIME, vBLOB, vFILENAME, vLENGTH
FROM FILE_UPLOAD
WHERE ID = inID;
owa_util.mime_header(nvl(vMIME, 'application/octet'), FALSE);
htp.p('Content-length: ' || vLENGTH);
owa_util.http_header_close;
wpg_docload.download_file(vBLOB);
END;
/Again, make sure everyone has rights to execute the procedure.
GRANT EXECUTE ON DISPLAY_IMAGE TO PUBLICThis doesn't create an editor inside the browser, it just creates a simple upload/display process. For a WYSIWYG editor that handles PDF or Docs, you'll need something far more sophisticated, and I can't suggest anything there.

File Upload - When is File saved in database

Hi,
I'm already using File Upload and Download in my application, which is working fine.
Now I only need an information for better understanding.
Is the file saved in the database table, when user selects the file from the file browse dialog or is it submitted when the user submits the page?
Normally I'm using a lot of AJAX in my page, because of this I've no page process started on submit, I call javascript, that's calling processes on demand. Will my files be uploaded???
Thanks
chrissy

Hello Chrissy,
Never uploaded “regular” files into the db, only XML files, so I don’t have much experience working with BLOB, but please check if the following can help you - Re: Download an upload from Server directory
In addition, Vikas wrote an application, which uploads CSV files directly into a table. The code can be downloaded in here - http://htmldb.oracle.com/pls/otn/f?p=38131:1
>> I've found packages called WWV_FLOW_FILE_API and WWV_FLOW_FILE_MGR
IMHO, you should try, as much as possible, to avoid using undocumented APEX internal packages, as they are subject to possible changes in future versions. If you can achieve your goals using public packages, and I’m pretty sure you can, it would be best.
Hope this helps,
Arie.

Yahoo BrowserPlus file upload

Hi,
I'd like to offer my users file uploads via the groovy new Yahoo BrowserPlus.
The BrowserPlus API call takes a URL parameter, documented as:
"The url to POST the file to. Can be relative to invoking URL, e.g. if service is invoked from http://www.foo.com/uploader/index.html and url argument is upload.php, the final url will be http://www.foo.com/uploader/upload.php"
Can anyone tell me what the parameter should be set to in order to upload files to WWV_FLOW_FILES?
Thanks
jd

JD,
If you haven't already, install the Firebug plugin for Firefox. Create an APEX page uploads a file. Open Firebug > Net tab > upload your file. You can see exactly what URL and parameters it's posting to (either wwv_flow.show or wwv_flow.accept). Understand that you will probably need at the very least the following parameters in addition to your file:
- p_flow_id (the app number)
- p_flow_step_id (the page number)
- p_instance (the session ID
- p_request (probably optional, but you might want to set it)
You can extract them from any page via JavaScript:
console.log('The App ID is: '+$v('pFlowId'));
I went through this exercise writing my [jApex jQuery plugin|http://tylermuth.wordpress.com/2009/08/19/japex-a-jquery-plugin-for-apex/] and it's a good learning experience.
I looked at the Yahoo BrowserPlus plugin the other day and it seems interesting. I'm curious to see what the uptake will be, as it's pretty new. Let us know how it goes as this would be a great howto for the APEX community.
Tyler Muth
http://tylermuth.wordpress.com
[Applied Oracle Security: Developing Secure Database and Middleware Environments|http://www.amazon.com/gp/product/0071613706?ie=UTF8&tag=tylsblo-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0071613706]

Security implication of 'Allow Public File Upload' to Yes

Hi
I am concerned about setting 'Allow Public File Upload' to Yes. Per the help text "Select Yes to permit unauthenticated users to upload files in applications that provide file upload controls. Select No to prevent unauthenticated users from uploading files in applications that provide file upload control"
That means anyone who has access to the URL can upload files of any type in to the application without any authentication.
Is this true?
Is this not a security risk in that case? Are there any alternatives which would allow 'authenticated' users to upload files via apex application.
Thank you
Kumar

Hi
Can you explain in detail? Sorry I am not an apex developer and as a DBA I was asked to set this setting in apex and since this affects all workspaces (and all apex applications) I was concerned about this.
I think we can have a custom procedure that checks to see who is uploading. One such example is given here
http://www.mandsconsulting.com/oracle-apex-tutorial-8-up-and-downloading-files-part-2-video-training
Also another concern is this
Allow Public File Upload [YES | NO] This applies only to applications that do not use any type of authentication, so that all users are anonymous. At first glance, file upload into the database seems relatively harmless, since the first threat that comes to mind is someone uploading a file with a virus, yet there is no way to execute a file inside the database that mitigates this risk . However, consider the possibility of someone uploading a bunch of large files. At the very least, this will be very resource intensive At some point, the tablespace used by the APEX_FILES schema will fill, which is essentially a denial-of-service attac

Plugin for multi file upload in mod_plsql

Hi,
Is there any working plugin which allows multi-file upload in mod_plsql for apex 4.2
Thanks,

That plug-in jariolamentioned supports IE6 and higher, I used this at a client who works with IE8, so it will work with IE9 to.
Check the site for more information about browser support:
APEX Plugin - Multiple File Upload

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