Opening .pdf stored in oracle in studio creator

I used iText libraies to open stored (as Blob or Clob type data) .pdf in oracle 10g release 2 database in studio creator.
I'm using thin client driver...in oracle
All things (uploading and retrieving ) works fine with the built in database..(point base)
But when it comes to connect with oracle and for both retreieving and uploading the stored pdf,it is not working....
Please help me regarding this matter

Can you answer a few questions, to help track this down:
What happens when you try to retrieve or upload a .pdf using Oracle?
Can you store/retrieve .pdf files from the Oracle DB with a standalong application? That would tell you whether the problem lies with Creator, or Oracle.
Finally, which JDBC driver are you using? Java Studio Creator bundles some Sun-branded drivers, which are supported. It sounds like you may be using the Oracle driver, which is not as compliant with the JDBC spec.

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CREATE TABLE test_blob (
id NUMBER(15)
, file_name VARCHAR2(1000)
, image BLOB
, timestamp DATE
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SELECT id, file_name,
DBMS_LOB.GETLENGTH(image) Length,
timestamp
FROM test_blob
ID|FILE_NAME|LENGTH|TIMESTAMP
1001|2011 HeartlandEmployeeReferralCard.pdf|353718|1/28/2013 11:44:41 AM
1002|2011 HeartlandEmployeeReferralCard.pdf|353718|1/28/2013 11:51:07 AM
Edited by: user_anumoses on Jan 28, 2013 11:45 AM

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CASE_DOCUMENTS
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    note                           VARCHAR2(240),
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is
view_file     blob;
BEGIN
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WPG_DOCLOAD.download_file (view_file);
END;
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-- to the database.
declare
v_file          varchar2(400);
v_success       boolean;
ret_val         number;
v_http_link     varchar2(400);
begin
-- The format of the link is as follows: hostname:port/pls/DAD_name/procedure_name
v_http_link := 'http://finas03:8888/pls/findadgen/read_pdf?p_id_document=' || :case_documents.id_document;
web.show_document(v_http_link, '_BLANK');
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# ============================================================================
#                     mod_plsql DAD Configuration File
# ============================================================================
# 1. Please refer to dads.README for a description of this file
# ============================================================================
# Note: This file should typically be included in your plsql.conf file with
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# Hint: You can look at some sample DADs in the dads.README file
# ============================================================================
<Location /pls/findadgen>
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    PlsqlDatabaseConnectString ffindbTNSFormat
    PlsqlNLSLanguage AMERICAN_AMERICA.WE8ISO8859P1
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MK

Opening .pdf stored in oracle in studio creator

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