Displaying a BLOB/CLOB on the web

Greetings:
I have been having this issue for quite some time now in PL/SQL:
I am attempting to do the folllowing in my code:
One can upload a text file (Terms & Conditions text). The data gets saved temporarily as a BLOB in the database. I then would like to display this data for the user on the HTML page. I have tried various ways to do this.
I.e., via the dbms_lob.read function (while looping through) (that was one method). The other method I tried was to convert the BLOB to a CLOB and to then print the CLOB via the following procedure:
PROCEDURE p_print_clob (pv_text IN CLOB)
IS
lv_ptr number (7) := 1;
BEGIN
WHILE lv_ptr < LENGTH (pv_text)
LOOP
HTP.p (SUBSTR (pv_text, lv_ptr, 2000));
lv_ptr := lv_ptr + 2000;
END LOOP;
END p_print_clob;
No matter what, however, I always encounter the following error:
ORA-06502: PL/SQL: numeric or value error
I made sure that I am passing the right variables/data types and I am. It appears to be a size issue. How can I resolve this? Or, could you please help me to successfully display the contents of a file (saved to the database as a BLOB) on the HTML page? This issue has had me puzzled for quite some time now. Thanks in advance!

My post has a link to an example of using the procedure. Did you follow that link? Is there something in the example that is confusing?
"Download" in this case just means that the client (the web browser) will need to download the LOB from the database server. How the text is actually rendered (i.e. whether it is displayed in the web browser or whether it gives the user the option to save the file) will depend on the headers that you set (via OWA_UTIL.mime_header) and the Content-Disposition you set, if any. I believe the example I linked to will just display the LOB in the browser window.
Justin

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