Open BLOB files

Hi,
I’m having some problem with access BLOB files:
I have a VO that is based on some tables including fnd_lobs.
I want to let the user access the field - file_data.
When I use the item type messageDownLoad – I get error after opening the file: “can’t determine type”
although the attribute Mime Type has the correct data type.
(I’ve created the item using the guidelines in the Oracle Applications Framework Developer's Guide)
But if I use the function: fnd_gfm.construct_download_url to get the file’s url, I can access the file without any problem:
pageContext.setRedirectURL(fileUrl,false);
I wanted to know:
* Are there any specific declarations for using messageDownLoad that is a field in a table?
* Is there a parameter that I can use while calling the function pageContext.setRedirectURL – so the URL will be opened in a different window?
Thanks!
Rona.

Hello,
By the way, now it starts magically working. Am really disappointed that there is no way for me to raise support ticket for such issues.
For sure something has changed on the Azure service, but its just a bit sad that I have to pay in case I wish to report such issues. :(
For your benefit details are here..
VS 2010, Open Server Explorer and then open your Azure account, under that open Blob and then it did not respond. ( today it does, and I can see my folders and files inside them)
Regarding "you can open it in your Azure portal", I am not sure of your question. But I have been able to open the manage.WindowsAzure.com and look at my storage account details on the day had problems.
Thanks.
Manu

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How to open a file form a blob column?

I'm storing some files in oracle 9.2 in a blob column, although i can't open them using php 4, I'm using this script :
<?php
     $SQL="SELECT ID_ARCHIVO,CONTENT";
          $SQL=$SQL." FROM ARCHIVOS_PRUEBAS ";
          $SQL=$SQL." WHERE ID_ARCHIVO =".$v_ID_ARCHIVO ;
          $c=OCILogon("$v_USER" , "$v_PASS" ,"$v_CONEXION" );
          $s = OCIParse($c,$SQL );
          if (!OCIExecute($s)) { print "execution failed"; exit(); }
     OCIFetchInto($s,&$arr,OCI_RETURN_LOBS);
     echo $arr["CONTENT"]->load();
          ?>
it shows this error
Fatal error: Call to a member function on a non-object in ov_archivo_detail_test.php on [echo $arr["CONTENT"]->load(); ].
I know the data is stored correctly since i used toad to save and open the blob file and it was ok, but i still can't find a right way to show the file from the web.
Message was edited by:
user560595

Hi,
<br>
<br>
Did you already try take a look on
Oracle+PHP Cookbook: Working with LOBs in Oracle and PHP ?
<br>
<br>
Cheers

Error while opening PDF file downloaded from database Blob column

Hi All,
I am working on jdev 11.1.1.4.0.
In my use-case I am using filedownload Actionlistner on a link to get the PDF file stored in the database in blob field. These files are being uploaded from other use-case in adf only.
After getting the dialog box to open/save/cancel for the PDF file when i click on open then i am getting an error *'Adobe Reader could not open 'abc.pdf' because it is either not a supported file type*
or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly docoded)' for some files , and to my surprise I am able to open some files.
When I open these PDF files separately from desktop I am able to view the content of each and every file in adobe reader.
I dont know where the problem exactly lies , while uploading/downloading the file . Any ideas/thoughts to resolve this issue?
Thanks
Kanika

Thanks a lot Timo...!!!
I checked the PDF file downloaded directly from the blob column in DB, there only it is corrupted so must be the problem in uploading the file. I am checking the code line by line,, but no problem in setting the file content type,size etc.
Here is the code snippet ..
byte[] buff;
buff = new byte[(int)length]; -- Length is the file size
int bytesRead = is.read(buff);
for (int i = 0; bytesRead < buff.length; i++) {
// int b = is.read();
int b = is.read();
if (b == -1)
break;
buff[i] = (byte)b;
BlobDomain blobDomian = new BlobDomain((buff));
TestVORow = (TestVORow Impl)TestVO.createRow();
if(blobDomian != null) {
TestVORow.setAttachment(blobDomian);
am.getTransaction().commit();
This seems to be Ok to me..the same issue, file is still corrupting.
Any thoughts from your side ???
Thanks
Kanika
The problem is resolved.
Changes made are instead of
InputStream is;
used ... BufferedInputStream bis ;
and after
for (int i = 0; bytesRead < buff.length; i++) {
// int b = bis.read();
int b = bis.read();
if (b == -1)
break;
buff[i] = (byte)b;
bis.close(); // use this close bufferedInput Stream.
Able to open each and every file now..Thanks for your suggestions Timo and Frank.
Edited by: Kanika on Mar 6, 2012 3:15 AM

Opening Excel Files from DB (blob column)

My project has implemented a WEBUTIL solution to attach files into the database, view the files stored in the database (in a BLOB column), and remove the files stored in the database.
Everything has been running smoothly. We are in final testing and have found a couple of interesting scenarios ...
When a user tries to view an Microsoft Excel 2007 file from our application, the Excel file displays properly (as long as Microsoft Excel isn't already open - outside of our Oracle application). Once the Excel file is viewed, the system will not allow the user back to our application until after the Excel file is closed (we use the start /wait myExcelFile.xls ... command). This works perfectly for us.
The two scenarios we encounter occur when
1.) The user has Microsoft Excel open outside of our application and tries to open an Excel file from within our application, or
2.) The user has the file already open (either from within our application or outside of our application) and then tries to open the file from within our application.
Let me explain a little further because the above two scenarios are interrelated.
When a user has Microsoft Excel open (outside of our application), and then clicks the button to open the Excel file, the system will open the file as another window (within Excel). The system will allow the user to navigate back to our application (where as, if Excel is not open outside of our application, the system will not allow the user to navigate back to our application). Once the user navigates back to our application (while the file is still open), the user can click the button to view the file again. At this point, the user is displayed a WUT-105 error message (I assume b/c the system is trying to open a file that is already open).
I assume the two solutions are the following:
a.) Do not allow a user to open a file that is already open (not sure how to check this from within Forms ?)
b.) Do not allow a user to open an Excel file when another EXCEL process is already running (this will avoid allowing the user to naviagate back to our application)
I don't know if there is a better solution.
Do you experts have any recommendations?
We are using Oracle Application Server 10g R2 (10.1.2.0.2), Oracle Database 10g R2 (10.2), and Oracle Developer 10g (10.1.2.0.2)
I hope this all makes sense.
Thanks,
Mike
Edited by: user639843 on Oct 20, 2008 2:15 PM
Edited by: user639843 on Oct 20, 2008 2:20 PM

Thank you, Thank you, Thank you!!!!
I believe that will work (adding a sequence number to the end of the filename)!
We do not allow a user to update the file, only view. If a user wants to make a change, they need to remove the existing file (from the database), create a new file (outside of our application), and attach the file in our application (into the database). All updates occur outside of our application - we are not a document authoring system, just a document storage system.
Once again, many thanks on the solution!
Mike

How to open a file with a link ?

I am using servlets to design an application.
The application supports uploading and downloading of .DOC and .RTF files.
My problem is that I am opening an uploaded file via a link.
OPen File
The above is also working fine and opens the file in the IE browser.
But my problem is that I want to open the file with MS-Word...as is done on many resume-building websites.
1) How am I supposed to do that ?
2) Can I specify ContentType="application/msword" in a link ?
Please Help !!

I did the foll. w.r.t a docbase.
A docbase stores documents and assigns an unique id to each one. The foll. is a code snippet that opens a document's contents in a browser.
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
Connection conn = null;
Statement stm;
ServletOutputStream sos = null;
ResultSet res;
// .... get id of document u want to open
query = "select id from .. where object_name = ' xx' .."
res= stm.executeQuery(query);
Blob blob = res.getBlob("_content"); // this will get content of document identified by id
int blobLen = (int)blob.length();
//the foll. is the part u need..
if (blobLen > 0) {
InputStream contents = blob.getBinaryStream();
response.setContentType("application/msword"); // MS Word
byte[] buf = new byte[blobLen];
int length = -1;
       while ((length = contents.read(buf)) != -1){
          sos = response.getOutputStream();
          sos.write(buf,0,blobLen);
sos.flush();
System.out.println("Doc Received");
contents.close();
res.close();
conn.close();
}

Display in browser blob files (.doc, .pdf...) stored in the Database

Hi,
I want to display blob file from de DB to the browser, but when I click on the link of the document I want to open, nothing append. If I check the length of the file it is correct. I tried to write it in a directory to see what appends. I can only write txt file. The other files are corrupted.
I did something like in the topik 532271.
Did I do something wrong ? Do I have to write some code in the web.xml ?
Here is my code :
public DataOutputStream showBlob() throws SQLException, IOException{
//it is my class not those from java.io
File file = (File) this.getFiles().getRowData();
FacesContext faces = FacesContext.getCurrentInstance();
HttpServletResponse resp = (HttpServletResponse)faces.getExternalContext().getResponse();
Blob b = file.getBlob();
int len = 0;
InputStream is = b.getBinaryStream();
long length = b.length();
byte[] x = new byte[10240];
resp.setHeader("Content-Disposition","filename=\"" + file.getFileName() + "\"");
resp.setContentType(file.getMimeType().getMime());
resp.setContentLength((int)length);
DataOutputStream o = new DataOutputStream(resp.getOutputStream());
while ( (len = is.read(x)) != -1)
o.write(x, 0, len);
o.flush();
o.close();
is.close();
faces.responseComplete();
return o;
In my xhtml page I have :
<ice:commandLink id="downloadLink"
action="#{managerBean.layoutManager.ediTraining.showBlob}"
value="#{file.fileName}" target="_blank">
</ice:commandLink>
Thank you for your response.
Edited by: joce77 on Nov 12, 2007 7:39 AM

Hi BalusC,
I did what you explant on this page http://balusc.blogspot.com/2007/07/fileservlet.html whit "FileServlet serving from database".
When I clik on the link I got an empty page with this html code :
<iframe id="history-frame" src="/uniform/xmlhttp/blank" style="z-index: 10000; visibility: hidden; width: 0pt; height: 0pt; position: absolute; opacity: 0.22;" title="Icefaces Redirect" frameborder="0"></iframe>
<script id="dynamic-code" language="javascript"></script>
<script id="focus-code"></script>
<script id="select-code"></script>
<script id="click-code"></script>
<script id="configuration-script" language="javascript">window.session='YXtNt2XZnElULb3t0j_7BQ';
document.getElementById('configuration-script').parentNode.viewIdentifier=1;
if (!window.views) window.views = []; window.views.push(1);
window.configuration = {synchronous: false,redirectURI: null,connection: {context: '/uniform/',timeout: 30000,heartbeat: {interval: 20000,timeout: 3000,retries: 3}}};
</script>
Any idea ?
Thanks

Displaying the BLOB files(PDF,TXT,IMAGE,etc) in the Form as an Attachment

Hi all,
I need to Open a file which is stored in the Data base Table & the Data type is of BLOB so i am populating the data but i need to display the attachment which is stored in the BLOB file when the button is clicked & i am using Oracle 10g
I have been just placed a Button & written the below code in WHEN_BUTTON_PRESSED Trigger & i have tried it out by placing a image icon & WHEN_IMAGE_PRESSED but it's not getting worked
It is Directly Coming in to Exception..
DECLARE
vblob BLOB;
vmime VARCHAR2(30);
BEGIN
select attachment,MIME_TYPE into vblob,vmime
from Table_name_a
where UNIQUE_ID = 16842;--:ITEM_RESULT.DRAWINGNO;
htp.init;
owa_util.mime_header( vmime, false);
-- owa_util.mime_header( 'image/jpeg', false);
-- owa_util.mime_header( 'image/jfif', false);
-- owa_util.mime_header( 'image/gif', false);
-- owa_util.mime_header( 'application/word' , FALSE);-- to read MS WORD doc
owa_util.mime_header( 'application/pdf' , FALSE);-- to read ADObE
message ('attachment type is' ||vmime);
message ('attachment type is' ||vmime);
owa_util.http_header_close;
wpg_docload.download_file(vblob);
exception
when no_data_found then
dbms_output.put_line('1. attachment type is' ||vmime);
-- NULL;
end;
so if any body has any idea Please let me Know
Hope for the Reply.
Thanks & Regards
K Nikethan Reddy

Hi,
Thanks for the reply,
The Document which u Refer is Showing how to Retrieve the Files from the Local System (i.e by giving the path) but i need to populate it from the database.
K Nikethan Reddy.

BLOB Files

Hi,
Is it possible to view BLOB files in OBIEE. I have these binary files stored in tables but would like to reference them in a report and allow the user to open a file. These are text/pdf/jpeg files
Can anyone help?
Thanks

Hi,
Instead of showing that into a report. Save them in the below location and give a link or reference-
\OracleBI\web\app\res
\OracleBI\oc4j_bi\j2ee\home\applications\analytics\analytics\res
http://oraclebizint.wordpress.com/2007/11/12/oracle-bi-ee-101332-working-with-clob-fields/
11g supports now a CLOB datatype, don't know the same for BLOB
But refer below
http://www.rittmanmead.com/2010/08/oracle-bi-ee-11g-reporting-on-clobs-lookups/
Hope this helped/ answered.
Regards
MuRam
Edited by: MuRam on Jun 12, 2012 6:42 AM

Opening pdf file in a browser window.

I have a requirement to open a pdf file in a new browser window after onClick of a link. It is not the url of the pdf file. Actually the pdf file is generated dynamically by reading a blob column from the database and converting into a byte array and writing it to the outputstream. This is the code
Currently on click of the link we are opening a jsp file which has the following code. We have put target=_blank in the link.
String fileName = "DownLoadFile.pdf";
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "inline;filename=\""+ fileName + "\"");
response.setContentLength(retrieveDocumentValue.getDocumentObj().length);
try{
ServletOutputStream out1 = response.getOutputStream();
out1.write(retrieveDocumentValue.getDocumentObj());
out.close();
} catch (IOException e) {
out.println("IO Exception");
e.printStackTrace();
}The problem is that,It is opening two window, one is an blank browser window and other pdf file in the Acrobat reader application? How can we open the file directly in the browser only without opening the Acrobat reader application externally?
Edited by: thisisananth on Sep 17, 2008 11:13 PM

We are facing this problem with IE6 browser only. In firefox, it opens fine in a browser window. What configuration should we do in IE6?
Thanks,
Ananth.

How to retrieve blob file

i am having a problem retrieving my blob file(PDF) to display on browser.
i have this code below:
$filename = $row['FILENAME'];
// Call the load() method to get the contents of the LOB
print $row['BINFILE']->load()."\n";
header('Content-type:application/pdf');
//header("Cache-Control: private",false); // required for certain browsers
header('Content-Disposition: attachment; filename="'.$filename.'"');
readfile($filename);
echo $row['BINFILE'];
this will display some characters when opened at mozilla. when opened on IE, this doesn't display pdf on the browser instead it will only allow to save the file.
hope anyone can give me some advice n some assistance on this.
thanks
Edited by: tamse on Jul 7, 2009 7:16 PM
Edited by: tamse on Jul 7, 2009 7:19 PM

I've got an example on my blog that might help, it's using a PNG. You can find it here:
http://blog.mclaughlinsoftware.com/php-programming/oracle-lob-processing/

Open word file, stored in database through Forms.

Assalam-o-Alikum
to Genius of Oracle's
I have stored the Word file name "MY_FILE.DOC" in oracle database. Now i want to open the file through Forms, remember i am using forms 6i. is there any body who help me to open the file.
Best Regards
Farrukh Shaikh

Assalam-o-Alikum
My in tension was not to hurt any body. if it did then sorry for that.
here is the code through which i stored the file in database
first create the DIRECTORY CREATE DIRECTORY generic AS 'C:\temp';---- --directory path where your files will be searched for storing.
THEN
create table my_blob_table
pk_name varchar2(20) primary key,
pk_value varchar2(20),
col_document blob
INSERT INTO MY_BLOB_TABLE
(PK_NAME,PK_VALUE)
('A','A');
COMMIT;
CREATE OR REPLACE PROCEDURE load_blob_from_file
( src_file_name IN VARCHAR2
, table_name IN VARCHAR2
, column_name IN VARCHAR2
, primary_key_name IN VARCHAR2
, primary_key_value IN VARCHAR2 ) IS
-- Define local variables for DBMS_LOB.LOADBLOBFROMFILE procedure.
des_blob BLOB;
src_blob BFILE := BFILENAME('GENERIC',src_file_name);
des_offset NUMBER := 1;
src_offset NUMBER := 1;
-- Define a pre-reading size.
src_blob_size NUMBER;
-- Define local variable for Native Dynamic SQL.
stmt VARCHAR2(2000);
BEGIN
-- Opening source file is a mandatory operation.
IF dbms_lob.fileexists(src_blob) = 1 AND NOT dbms_lob.isopen(src_blob) = 1 THEN
src_blob_size := dbms_lob.getlength(src_blob);
dbms_lob.open(src_blob,DBMS_LOB.LOB_READONLY);
278 Oracle Database 11g PL/SQL Programming
END IF;
-- Assign dynamic string to statement.
stmt := 'UPDATE '||table_name||' '
|| 'SET '||column_name||' = empty_blob() '
|| 'WHERE '||primary_key_name||' = '||''''||primary_key_value||''' '
|| 'RETURNING '||column_name||' INTO :locator';
-- Run dynamic statement.
EXECUTE IMMEDIATE stmt USING OUT des_blob;
-- Read and write file to BLOB.
dbms_lob.loadblobfromfile( dest_lob => des_blob
, src_bfile => src_blob
, amount => dbms_lob.getlength(src_blob)
, dest_offset => des_offset
, src_offset => src_offset );
-- Close open source file.
dbms_lob.close(src_blob);
-- Commit write.
IF src_blob_size = dbms_lob.getlength(des_blob) THEN
$IF $$DEBUG = 1 $THEN
dbms_output.put_line('Success!');
$END
COMMIT;
ELSE
$IF $$DEBUG = 1 $THEN
dbms_output.put_line('Failure.');
$END
RAISE dbms_lob.operation_failed;
END IF;
END load_blob_from_file;
after create the PROCEDURE run the procedure
begin
load_blob_from_file('FILE_NAME.DOC',' my_blob_table','col_document','PK_NAME','A');
end;

Retrieving Blob files

I have a SQL Server 7 database where files are stored as blob.
Now I want to retrieve the files so i created a java program. I can retrieve the files, but when I open them (I saved them as txt) there unreadable.
Then I found that in the text the type of document is specified. So I did a renaming. after this I'm able to open PDF files but word or excell files are still unreadable.
does anybody have excperience with this?
This is het part of the code used to extract the files.
void getBinaryFileAttachment(String FileName,ResultSet rs) throws IOException, FileNotFoundException, SQLException
          //Array to hold array of file bytes
          byte[] fileBytes; //an array of bytes
          byte buf[] = rs.getBytes(1);
          System.out.println(buf);
          String ext = "";
          OutputStream targetFile;
          //Create and write the tempfile
          OutputStream tempFile= new FileOutputStream("Temp.dat");
            tempFile.write(buf);
          tempFile.close();
          File f = new File("Temp.dat");
          FileReader fr = new FileReader(f);
          BufferedReader br = new BufferedReader(fr);
          String meta = br.readLine();
          if(meta.indexOf(".pdf") != -1)
               System.out.println("PDF File detected");
               ext = ".pdf";
          else
          if(meta.indexOf("Word.Document.8") != -1)
               System.out.println("Doc File detected");
               ext = ".doc";
          else
               ext = ".txt";
          fileBytes = rs.getBytes(1); //create a byte array from contents of field
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          targetFile.write(buf); //write the array of bytes to file
          targetFile.close(); //close the File stream
     }

Documents saved through the OEL container type in Client Server are saved as serialised objects in the database - e.g. the thing the DB is not a binary copy of the document on disk, but a memory representation.
WebUtil on the other hand - saves any file to the DB as a binary copy of the O/S file and likewise any file it pulls out will be an exact copy of what is in the DB.
In the case of using WebUtil to pull out a document that was saved through an OLE container this will not work because the file on disk that WebUtil produces will not be the same as the source document.
At some point we'll be writing a utility to de-serialise the OLE document that is Stored by OLE containers in a blob to restore them to file form on disk.
You can of course do this manually by writing a Form (in 6i client server) which queries the blob into an OLE container and then uses OLE to call the Save method of the OLE server to pull the document onto disk.
HTH

GWCheck repetitive 'CODE 93 unused blob files (deleted)

I've run the standalone gwcheck a few times now. with 'contents+attachment file check' and Fix problems.
I've run it on user/message.
It seems to me that it keeps reporting the same message after every run, I get
Correctable conditions encountered:
CODE DESCRIPTON COUNT
93 Unused blob files (deleted)..................583
It keeps reporting the same count, 583 files.
It also reports
Uncorrectable conditions encountered:
CODE DESCRIPTON COUNT
50 Unused blob files (deleted)..................18
Any idea on how to correct it?

Originally Posted by fribert
I've run the standalone gwcheck a few times now. with 'contents+attachment file check' and Fix problems.
93 Unused blob files (deleted)..................583
It keeps reporting the same count, 583 files.
50 Unused blob files (deleted)..................18
Any idea on how to correct it?
In the details above it should show the folder and BLOB file(s) it wants to delete as it crawls through the message databases. You can check to see if they actually exist. IF it is not deleting them, there is usually a reason, like they are too recent to delete, they are help open, or the options actually in effect do not allow it to repair. In the beginning of the GWCHECK log, it will show the options, and the start / end time of the run.
I'm wondering if you are seeing the same GWCHECK log over and over, so check the start / end times to ensure its not just regurgitating the same log.
-- Bob

Manage Blob files

Hi there,
I have a problem: I'm trying to open a .jpg file stored in a BLOB field of the Database. I've followed the instructions founded on the online help but what I get is a file which is totally different from the original one!
here's my piece of code.. where am i wrong? Is there a better method to open a Blob file? thanks to all.
CODE:
String filename = "C:\\temp.jpg";
File tempFile = new File(filename);
BlobDomain myBlob = (BlobDomain) k.getAttribute("Documento");
InputStream blobIn = myBlob.getBinaryStream();
OutputStream fileOut = new FileOutputStream(tempFile);
int next;
while ((next = blobIn.read()) != -1) {
fileOut.write(next);
blobIn.close();
fileOut.close();

How are you selecting the unique row for the blob?

How to display PDF BLOB file within Forms

Hi All:
I just want to know if is it possible to display PDF blob file within the forms. Currently I use webutil to open pdf in browser. This time I need to display it in forms, so that upon scrolling, the user can view the pdf images of that particular record.
TIA

Hello,
<p>Did you see this Java Bean ?</p>
Francois

Open BLOB files

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