BLOB column to show PDF

I have a problem displaying PDF files through BLOB fields.
I want to display PDF within the browser (not as a download option or button) from that BLOB columm. May be within a report, region, or through the html <embed></embed> parameter.
Thanks for the help.

Similar Messages

Insert picture in a blob column and show in oracle forms

hi ,
please help me with this
I am trying to insert a picture into a blob column of a table and show that in oracle forms , but not able to do it .
I am using version 10g for both database and forms .
Please tell me how to insert a picture in a blob column that is stored in my 'c:\test' folder
and also how to show that in forms .

To populate the Image Item you have to use the Webutil Client_Read_Image_File() built-in.
here
http://www.oracle.com/webapps/online-help/forms/10g/state?navSetId=_&navId=3&vtTopicFile=f1_help/builtn_r/readimag.html&vtTopicId=
To add an Image Item to your block based on the table that contains the BLOB column, then give this Image Item the BLOB column name.
So that, all you have to do is to execute query on that block.

BLOB Column with PDF docs

I already read a different ways to extract the PDF docs from oracle table and open it through forms. All of them with java classes, webutil integration and dbms_lob.
But, if I need an other way to show it (select the column and open it) through the forms module, I can do it. Like Developer 6i, we can defined a OLE container field in forms and query the table and show the BLOB data.
This are my scenerio:
Oracle DB: EE 9.2.0.6.0
Developer: 6i Rel 2 & 10g v. 10.1.2.0.2 (for test and eventually for migrate to production environment, with iAS R 9i)
I already read if I need to use java, dbms_lob or webutil, I need to use it through iAS and in some cases I need to create a DAD.
But, If have 10g in developer enviroment just for test and I don't want to use a iAS, do I have any other way to select a BLOB column (with a PDF files store in there) from a oracle table and be able to open it with acorbat reader.
thank you a lot guys and sorry about all this message (related with the same) but I am no a guru oracle developer.
AM

Rechecked and was not logged on to user, checked the error view and got
TEXT_INDEX_FRI 03/30/2001 1: AAAIt+AAFAAAAmDAAJ DRG-11207: user filter command exited with status 137
searched some of the articles here on this error, checked that listener was running correctly for extproc, added to the listener the ENVS=LD_LIBRARY_PATH line
added roles, resource, connect, ctxapp
added to PATH and LD_LIBRARY_PATHs,
but still get the above error
does work though for simple text insert case, so seems to be related to documents in a blob field. Any other suggestions or queries that I can do to troubleshoot this? Could it be the way it is loaded?
================
my sql loader control file
LOAD DATA
INFILE '/chem20/stuff/Load_docs2.dat'
INTO TABLE imed.cmgendoc
APPEND
FIELDS TERMINATED BY ','
(Doc_id char,
author char,
doc_name FILLER CHAR(255),
act_doc LOBFILE(doc_name) TERMINATED BY EOF,
mimetype char(128))
==================
my dat file
2,ted the frog,/chem20/stuff/snmp.pdf,application/pdf
3,ted the dog,/chem20/stuff/config.pdf,application/pdf
4,ted the cat,/chem20/stuff/oemcn.pdf,application/pdf
5,ted the rat,/chem20/stuff/oemer.pdf,application/pdf
6,ted the cow,/chem20/stuff/oemug.pdf,application/pdf
7,ted the bug,/chem20/stuff/servlets.pdf,application/pdf
8,ted the bird,/chem20/stuff/pg.pdf,application/pdf
9,ted the sheep,/chem20/stuff/install.pdf,application/pdf
null

Problem with blob column index created using Oracle Text.

Hi,
I'm running Oracle Database 10g 10.2.0.1.0 standard edition one, on windows server 2003 R2 x64.
I have a table with a blob column which contains pdf document.
Then, I create an index using the following script so that I can do fulltext search using Oracle Text.
CREATE INDEX DMCS.T_DMCS_FILE_DF_FILE_IDX ON DMCS.T_DMCS_FILE
(DF_FILE)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('DATASTORE CTXSYS.DEFAULT_DATASTORE');
However, the index is not searchable and I check the following tables created by database for my index and found them to be empty as well !!
DR$T_DMCS_FILE_DF_FILE_IDX$I
DR$T_DMCS_FILE_DF_FILE_IDX$K
DR$T_DMCS_FILE_DF_FILE_IDX$N
DR$T_DMCS_FILE_DF_FILE_IDX$R
I wonder what's wrong with it.
My user has been granted the ctx_app role and I have other tables that store plain text which I use Oracle Text are fine. I even output the blob column and save as pdf file and they are fine.
However the database seems like not indexing my blob column although the index can be created without error.
Please advise.
Really appreciate anyone who can help.
Thank you.

The situation is I have already loaded a few pdf document into the table's blob column.
After I create the Oracle text index on this blob column, I find the system generated index tables listed in my earlier posting are empty, except for the 4th table.
Normally we'll see words inside the table where those are the words indexed by oracle text on my document.
As a result, no matter how i search for the index using select statement with contains operator, it will not give me any result.
I feel weird why the blob is not indexed. The content of the blob are actually valid because I tested this by export the content back to pdf and I can still view and search within the pdf.
Regards,
Jap.

How to show pdf or word icons for a BLOB column in a report?

Hi,
I am getting interested for the blob columns, I have created some columns for storing some pdf drawings and pictures for specific items in a table, it is ok to show a text like 'download' or any other text in the report by setting the following blob attribute:
DOWNLOAD:TICKET_DETAILS:ATTACHMENT:TICKET_DETAILS_ID::MIME_TYPE:FILE_NAME:::inline:Download
but instead of texts, I would like to show a small pdf image for my Blob file, or a word image or Excel image, according to the different file type.
how to do that?
and instead of inline or attachment this two options, I would like when the user click the image of the file, the browser will show the image in a new window, or a new browser tab.
I tried the inline option for my file at Google Chrome, but when it showed the pdf file within the browser, I cannot get back to my app by clicking the 'backward' icon at the browser menu, it will stuck there and I have to close the broswer and then login to the app again, instead of simply returning back to the previous page within the app.
Please help me out.
Thanks
Peter Yawei . Zhang

Please try using a query like below for your report.
SELECT ticket_details_id,
CASE
   WHEN NVL(dbms_lob.getlength(attachment),0) = 0 THEN NULL
   ELSE
      CASE
         WHEN mime_type LIKE 'image%'
            THEN '<a href="'||apex_util.get_blob_file_src('P101_ATTACHMENT',ticket_details_id)||'" target="_blank"><img src="/i/image_icon.gif" /></a>'
         WHEN mime_type = 'application/pdf'
            THEN '<a href="'||apex_util.get_blob_file_src('P101_ATTACHMENT',ticket_details_id)||'" target="_blank"><img src="#IMAGE_PREFIX#menu/pdf_32.gif" /></a>'
         WHEN mime_type like '%ms-excel%'
            THEN '<a href="'||apex_util.get_blob_file_src('P101_ATTACHMENT',ticket_details_id)||'" target="_blank"><img src="/i/excel_icon.gif" /></a>'
         WHEN mime_type like '%msword%'
            THEN '<a href="'||apex_util.get_blob_file_src('P101_ATTACHMENT',ticket_details_id)||'" target="_blank"><img src="/i/word_icon.gif" /></a>'
         WHEN mime_type like '%ms-powerpoint%'
            THEN '<a href="'||apex_util.get_blob_file_src('P101_ATTACHMENT',ticket_details_id)||'" target="_blank"><img src="/i/powerpoint_icon.gif" /></a>'
         ELSE '<a href="'||apex_util.get_blob_file_src('P101_ATTACHMENT',ticket_details_id)||'" target="_blank"><img src="/i/office_icon.gif" /></a>'
      END
END attachment
FROM ticket_details
WHERE ticket_details_id = :P102_TICKET_DETAILS_IDPlease note that I am using APEX_UTIL.GET_BLOB_FILE_SRC function to download the BLOB files. The first parameter of this function in my example query is P101_ATTACHMENT, which refers to page item of type "File Browse" on page 101, which is a DML form on table TICKET_DETAILS. Replace it with the appropriate page number. Please refer to "Working With BLOBs Procedurally" section of this APEX 3.2 documentation for more: [url http://download.oracle.com/docs/cd/E14373_01/appdev.32/e11838/advnc.htm#sthref2199]http://download.oracle.com/docs/cd/E14373_01/appdev.32/e11838/advnc.htm#sthref2199
Also I have the gif images representing various MIME types on my file server. For e.g., /i/excel_icon.gif. You can use #WORKSPACE_IMAGES# if you want to.

How to view PDF files strored in a BLOB column

Hi all,
I want to display a PDF file, stored in a BLOB column, in a form or through a JavaBean.
But the problem is more complicated then that. I do not want to retrieve the PDF file in the application server that show it through a browser.
Actually, I do not want users to get the entire file, I just want them to see it or print it.
I want, in fact, to display a "stream" of bytes through Oracle Forms. Not a file.
This one, sounded to be a good solution, but actually not. When the file was too big (multiple pages), the application was blocked until the entire file was loaded. And when you try to print it, it wasn't printed right. The advantage of this solution is that it is open-source so we can add methods to connect to the DB, retrieve the content of the BLOB column and displays it without downloading the file.
Here is a good solution. Really good, files are loaded quickly, the rendering is really good and the file is printed perfectly (as it was printed from Adobe Acrobat). The disadvantage of this solution is that it is not open-source and is really expansive.
As you can see, both solutions uses PJC.
So any help, any idea to solve my problem will be highly appreciated.
Thanks to all of you,
Amine
PS : I am using F&R 11gR2

Not entirely. At least we came to the conclusion it doesn't make (much) sense to block the save option of PDFs if you want to allow printing them
Anyway; there is of course another possibilty: you could always write your own java bean PDF reader; there are plenty of java PDF libraries available:
Open Source PDF Libraries in Java
The easiest way would be to choose one which can open a PDF from a URL and render it; I would retrieve the image via mod_plsql using WPG_DOCLOAD and simply use the PDF library to render the PDF. No tempfiles anyway, and if you don't implement it there is also no save button.
cheers

How to generate a .pdf output for a BLOB column?

Hi friends,
(Forms 6i)
I have a .pdf into a blob column and I want to show that .pdf as my report output...
Example-> The report only have this query:
select myblob_ column
from mytable
the column in database has the .pdf ... but when I execute the report, it only appears some information when I put the item to show as Text... But obviously it's not the ofriginal pdf...
If I try to put as OLE2 doesn't appear either anything and if I try to put it as an Image, it appears a message error.
Any ideas?
Thanks.
Jose.

Hello,
How has been "uploaded" the PDF file in the BLOB ?
Regards

How to store PDF file in BLOB column without using indirect datastore

Hi ,
I want to store a pdf file in a BLOB column.
But , it should be a direct store. I cannot usre indirect datastore.
BLOB column doesn't support indirect datastore. I get the following error.
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: Oracle Text error:
DRG-10581: indirect datastores cannot be used with long or lob text columns
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 365
can anyone give me any clue onhow to manage this issue?

Thanks This really helped.
For other readers, I am summarising what I did.
create table test
id number primary key,
docs BLOB
create or replace directory doc_loc
as 'c:\test';
CREATE OR REPLACE PROCEDURE Load_BLOB_From_File (file_name in varchar2)
AS
src_loc bfile:= bfilename('DOC_LOC',Load_BLOB_From_File.file_name);
dest_loc BLOB;
begin
insert into tkctsf15t values(1,empty_blob()) returning docs
into dest_loc;
dbms_lob.open(src_loc,DBMS_LOB.LOB_READONLY);
DBMS_LOB.OPEN(dest_loc, DBMS_LOB.LOB_READWRITE);
DBMS_LOB.LOADFROMFILE(
dest_lob => dest_loc
,src_lob => src_loc
,amount => DBMS_LOB.getLength(src_loc));
DBMS_LOB.CLOSE(dest_loc);
DBMS_LOB.CLOSE(src_loc);
COMMIT;
end;
show errors;
exec Load_BLOB_From_File('test.pdf');
exec ctx_ddl.create_preference('mylex','BASIC_LEXER');
create index testx on test(docs) indextype is ctxsys.context
parameters
('filter ctxsys.AUTO_FILTER LEXER mylex ');
select id from test where contains(docs,'patch')>0;
Thanks Roger once more

Problem displaying PDF stored in BLOB column

Hello everyone.
I've been trying to follow this tutorial http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::p11_question_id:232814159006 on displaying PDFs stored in BLOB columns. This is being performed on Apex 4.2, with my DB running 11g. I've got my procedure, which I'll post below:
create or replace procedure "PDF" (p_id IN gvo_documents.doc_id%type)
is
    l_lob    blob;
    l_amt    number default 30;
    l_off   number default 1;
    l_raw   raw(4096);
begin
    select contents into l_lob
        from gvo_documents
         where doc_id = p_id;
-- make sure to change this for your type!
    owa_util.mime_header( 'application/pdf' );
    begin
        loop
          dbms_lob.read( l_lob, l_amt, l_off, l_raw );
          htp.prn( utl_raw.cast_to_varchar2( l_raw ) );
          l_off := l_off+l_amt;
          l_amt := 4096;
    end loop;
        exception
           when no_data_found then
              NULL;
        end;
end;
I am trying to run this through a PL/SQL dynamic region and while I don't receive any error's, the content displayed is a huge mess of garbled text and odd characters. I've tried to run this procedure on numerous other document types, including word files and jpeg images, all with the necessary changes in my procedure, and regardless of what I use, I still get a large mess of strange characters. Does anyone have any information or ideas about why this is happening?

If I understand correctly, your requirements needs to be broken down into two problems:
1) click link that pops up a window displaying a new APEX page
2) an APEX page the displays the document, not downloads it.
I haven't done #1 (yet).
However, you may be able to generate a URL that points to the new page as part of the SELECT statement for the Report.
This has a related question, but no answer yet:
open pdf in popup browser window
The key is target="_blank" for the anchor tag.
To generate the URL, you should use the APEX_UTIL.prepare_URL() function.
If that doesn't work, a Dynamic Action that does some magical JavaScript stuff may be needed.
For #2, I lost the URL that showed how to display a PDF as part of a "form" page.
From what I remember:
Start with a blank page with one blank HTML region (all the Items go in the HTML region)
Add an Item for the PK/Doc_ID
part I forgot Create a Data Manipulation Process
- Automated Row Fetch
- On Load - After Header
- (stuff for your table/view)
part I forgot Create an (I believe) "File Browser" item type. For Settings:
- Storage Type "BLOB column specified in Item Source" (and place the column name of the BLOB there)
- MIME Type Column: (column name) -- since you have multiple types, this is a MUST HAVE
- Filename Column: (column name) -- I highly recommend you have this.
- Content Disposition == INLINE <-- this is the kicker
Also, you will need a Browser Plugin for each of the MIME Types (otherwise, the browser may try to 'download' the file)
Browsers can handle Image types internally. Adobe's plugin can handle PDFs. I don't know about Word/Excel.
Again, I don't remember the exact details, but that should cover most of it.
MK

How to store a PDF in a BLOB column, then select/search it using SQL?

We have a simple requirement.
(1.) We have an Oracle 10g DB.
(2.) We want to store PDFs/MS Word docs inside BLOB column in a table.
(3.) We need to show PDF/MS Word content to the user, without opening the PDFs/MS World like we normally do (i.e. Using PDV reader/ MS Word).
(4.) i.e. We need to use SQL statements and
(a.) Get all contents of the PDF/MS WORD doc.
(b.) Search for specific strings inside these docs in the BLOB columns.How to do this pls? Code sample would be really great.
Edited by: user12240205 on Jul 18, 2012 9:35 PM
Edited by: user12240205 on Jul 18, 2012 9:37 PM

rp0428 wrote:
>
We have a simple requirement.
>
Really? You mean as opposed to a requirement that might actually be doable?Could be that simple is used as in stupid ? Like in, "+look at this simply idiotic requirement, blah.. blah...+"? ;-)
@user12240205:
BLOBs contains binary data. Not text data. How do you propose to search binary data for strings?
PDF and Word formats include actual text strings and identifiers as part of the formatting. How do you propose that this be identified and ignored when searching for specific strings in the document's content?
PL/SQL does not have the ability to take a page from a PDF/Word document, highlight the search string, and display that to the client. A format-parser is needed to parse the PDF/Word format and generate that as content (e.g. HTML or XML) that can be rendered by a client. How do you propose PL/SQL serves up search strings that it found, when it cannot interpret the document format? (cannot even say what page, section or paragraph, that search string occurs)
Documents can be loaded via the DBMS_LOB interface. Either from the db server's file system, or by the client supplying the document as chunks for "write appending" to a BLOB. See Oracle® Database PL/SQL Packages and Types Reference guide for details.
Text search and document indexing are supported by an Oracle feature called Content Management<a> (which includes interMedia, UltraSearch, Oracle Text, etc).
Oracle also supports (on Window server platforms), the Microsoft Component Object Model (COM). COM interfaces (such as COM for Word) can be used for specialised processing (e.g. searching Word documents). Oracle's COM feature allows one to interface directly with external s/w (e.g. MS Word) via its COM interface.

Apache FOP PDF Save in BLOB column

Hi,
I just want to call Apache FOP in an APEX process to create PDF reports and save these reports in a BLOB column in the same database. So I can email these reports in another process using APEX_MAIL. Does anyone know a way to achieve this?
Thanks

If I understand correctly, your requirements needs to be broken down into two problems:
1) click link that pops up a window displaying a new APEX page
2) an APEX page the displays the document, not downloads it.
I haven't done #1 (yet).
However, you may be able to generate a URL that points to the new page as part of the SELECT statement for the Report.
This has a related question, but no answer yet:
open pdf in popup browser window
The key is target="_blank" for the anchor tag.
To generate the URL, you should use the APEX_UTIL.prepare_URL() function.
If that doesn't work, a Dynamic Action that does some magical JavaScript stuff may be needed.
For #2, I lost the URL that showed how to display a PDF as part of a "form" page.
From what I remember:
Start with a blank page with one blank HTML region (all the Items go in the HTML region)
Add an Item for the PK/Doc_ID
part I forgot Create a Data Manipulation Process
- Automated Row Fetch
- On Load - After Header
- (stuff for your table/view)
part I forgot Create an (I believe) "File Browser" item type. For Settings:
- Storage Type "BLOB column specified in Item Source" (and place the column name of the BLOB there)
- MIME Type Column: (column name) -- since you have multiple types, this is a MUST HAVE
- Filename Column: (column name) -- I highly recommend you have this.
- Content Disposition == INLINE <-- this is the kicker
Also, you will need a Browser Plugin for each of the MIME Types (otherwise, the browser may try to 'download' the file)
Browsers can handle Image types internally. Adobe's plugin can handle PDFs. I don't know about Word/Excel.
Again, I don't remember the exact details, but that should cover most of it.
MK

Display a PDF from a BLOB Column on a page.

Hi Folks.
I have PDFs stored in BLOB columns in the database.
Is there a way to display these to the APEX user on the page at runtime?
Any pointers appreciated.
Meantime I'm going to experiment.
Cheers
Dogfighter.

I suppose this depends really on what you want.
You have at least two choices.
1) Allow the user to download the pdf and then they get the option to save it or open it in a new window
2) You can also get them to open it. You can open it in a new window by adding "_blank"
in the target.
The sample application has procedures download_my_file and custom_image_display which will show you how to achieve this.
The only other way you could possibly do it is open it as a plugin. Thats way beyond my knowledge, but I'm sure someone else will chip in.

How to insert a pdf or jpeg image into a blob column of a table

How to insert a pdf or jpeg image into a blob column of a table

Hi,
Try This
Loading an image into a BLOB column and displaying it via OAS
The steps are as follows:
Step 1.
Create a table to store the blobs:
create table blobs
( id varchar2(255),
blob_col blob
Step 2.
Create a logical directory in the database to the physical file system:
create or replace directory MY_FILES as 'c:\images';
Step 3.
Create a procedure to load the blobs from the file system using the logical
directory. The gif "aria.gif" must exist in c:\images.
create or replace procedure insert_img as
f_lob bfile;
b_lob blob;
begin
insert into blobs values ( 'MyGif', empty_blob() )
return blob_col into b_lob;
f_lob := bfilename( 'MY_FILES', 'aria.gif' );
dbms_lob.fileopen(f_lob, dbms_lob.file_readonly);
dbms_lob.loadfromfile( b_lob, f_lob, dbms_lob.getlength(f_lob) );
dbms_lob.fileclose(f_lob);
commit;
end;
Step 4.
Create a procedure that is called via Oracle Application Server to display the
image.
create or replace procedure get_img as
vblob blob;
buffer raw(32000);
buffer_size integer := 32000;
offset integer := 1;
length number;
begin
owa_util.mime_header('image/gif');
select blob_col into vblob from blobs where id = 'MyGif';
length := dbms_lob.getlength(vblob);
while offset < length loop
dbms_lob.read(vblob, buffer_size, offset, buffer);
htp.prn(utl_raw.cast_to_varchar2(buffer));
offset := offset + buffer_size;
end loop;
exception
when others then
htp.p(sqlerrm);
end;
Step 5.
Use the PL/SQL cartridge to call the get_img procedure
OR
Create that procedure as a function and invoke it within your PL/SQL code to
place the images appropriately on your HTML page via the PL/SQL toolkit.
from a html form
1. Create an HTML form where the image field will be <input type="file">. You also
need the file MIME type .
2. Create a procedure receiving the form parameters. The file field will be a Varchar2
parameter, because you receive the image path not the image itself.
3. Insert the image file into table using "Create directory NAME as IMAGE_PATH" and
then use "Insert into TABLE (consecutive, BLOB_OBJECT, MIME_OBJECT) values (sequence.nextval,
EMPTY_BLOB(), 'GIF' or 'JPEG') returning BLOB_OBJECT, consecutive into variable_blob,
variable_consecutive.
4. Load the file into table using:
dbms_lob.loadfromfile(variable_blob, variable_file_name, dbms_lob.getlength(variable_file_name));
dbms_lob.fileclose(variable_file_name);
commit.
Regards,
Simma........

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

Display PDF on the browser from BLOB column

Hi All,
I have BLOB column in the table where we are storing PDFs.
I want to display PDF within the browser ( not as a download option) from that BLOB column, like clicking on the "Print" link.
Please let me know if anyone has any suggestion.
-Smith

Create this DB procedure:
procedure show_webdoc(io_blob    in out nocopy blob
                     ,i_mimetype in varchar2
                     ,i_filename in varchar2)
is
begin
   if dbms_lob.getlength(io_blob) >0 then
      owa_util.mime_header(nvl(i_mimetype,'application/octet'),false);
      htp.p('Content-length: ' || dbms_lob.getlength(io_blob));
      htp.p('Content-Disposition: inline; filename="'||i_filename|| '"');
      owa_util.http_header_close;
      wpg_docload.download_file(io_blob);
   end if;
end;Get the blob and give it as input to this procedure. For a pdf the mime type will be application/pdf.

BLOB column to show PDF

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