Print clob type

Question

How to print a clob type? I cannot do it using htp.p because the parameter's type is varchar2. I need clob type because the column content is more than 4000 chars (the maximum of varchar2 type).
thanks,
Jan

Answer 1

you can create a procedure that cuts your CLOB file into VARCHAR2(4000) variables with a loop and read the concatenated results in your browser.
It works fine for me :
Create or Replace MY_PROCEDURE
as
locator_var CLOB;
amount_var INTEGER;
offset_var INTEGER;
output_var VARCHAR2(4000);
length_var INTEGER;
counter INTEGER;
i integer;
begin
select MY_CLOB into locator_var from MY_TABLE where CONDITION;
length_var := DBMS_LOB.GETLENGTH(locator_var);
counter := CEIL(length_var/4000);
-- set the variables
offset_var := 1;
-- check that the length left to read is more or less than 4000 chars--
if length_var >= 4000 then
amount_var := 4000;
else amount_var := length_var;
end if;
-- cuts the CLOB into as many pieces as we need and prints it into the browser.
-- if the text is HTML code, the HTML page will be displayed
for i in 1..counter
loop
DBMS_LOB.READ(locator_var, amount_var, offset_var, output_var);
htp.p(output_var);
offset_var := offset_var + 4000;
length_var := length_var - 4000;
if length_var >= 4000 then
offset_var := 4000;
else offset_var := length_var;
end if;
end loop;
end;
I hope this helps.
Bertrand.