Show image problem

Question

Hello guys,
I need your help urgent.
What I am trying to do is to display a student record (i.e number, name,grades,..etc) from a table, I need also to display his image as inline info with his record in a separate region.
what I did is that
1. I have create a procedure as follows
PROCEDURE retreive_img_data(p_id varchar2) AS
Lob_field BLOB;
buffer RAW(32767);
offset BINARY_INTEGER:=1;
buffer_size NUMBER:=32767;
BEGIN
-- retreive the LOB locator into the PL/SQL locator variable lob_field
SELECT photo
INTO lob_field
FROM students
WHERE std_number=p_id
-- The mime header is sent first before sending the image
--content
OWA_UTIL.MIME_HEADER('image/jpg');
-- read the LOB content in a loop and send it across to the browser
LOOP
DBMS_LOB.READ(lob_field,buffer_size,offset,buffer);
-- convert the raw content read into varchar2 and send it to the browser
htp.p(UTL_RAW.CAST_TO_VARCHAR2(buffer));
offset:=offset+buffer_size;
END LOOP;
-- Catch the no_data_found exception.This is raised by the dbms_lob.read
-- procedure
-- when the end of the LOB is reached and there are no more bytes to read
EXCEPTION
WHEN NO_DATA_FOUND
THEN null;
END retreive_img_data;
2. created a HTML region and its source is :
<IMG SRC="show_image?p_id=&P3_STD_NUMBER." width="70" height="80" alt="No Picture">
where P3_STD_NUMBER is a page field contains the student number.
but when I run the page no image is there, I have checked that there is a photo in the database for the student I used to test the page.
any help where is the error , or how can I do it the right way.
thanks

Answer 1

Sergio,
forgive , I have migrated my application to 10g , I am facing the same problem, againg my images in my database but they don't show up. This I am sure my NLS_LANG for the DAD is correct , any way this is my DB nls.
1* select * from nls_database_parameters
SQL> /
PARAMETER VALUE
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
NLS_CHARACTERSET AR8MSWIN1256
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_RDBMS_VERSION 10.1.0.2.0
and this is my DAD
Alias /i/ "E:\OracleHomeBI\marvel\images/"
<Location /pls/htmldb>
SetHandler pls_handler
Order deny,allow
Allow from all
AllowOverride None
PlsqlDatabaseUsername HTMLDB_PUBLIC_USER
PlsqlDatabasePassword htmldb_public_user
PlsqlDatabaseConnectString oracledb:1521:yudb ServiceNameFormat
PlsqlDefaultPage htmldb
PlsqlDocumentTablename wwv_flow_file_objects$
PlsqlDocumentPath docs
PlsqlDocumentProcedure wwv_flow_file_manager.process_download
PlsqlAuthenticationMode Basic
PlsqlNLSLanguage AMERICAN_AMERICA.AR8MSWIN1256
</Location>
-- Need your help