Problem with printing using htp.prn CLOB

Hello

Oracel 11g R2
Apex 4.1

I got a reference from this forum on how to print the CLOB data using htp.prn.

However, when I run my procedure, I get the error
 ORA-06502: PL/SQL: numeric or value error: character string buffer too small
The length of the clob is 195734.

The code is
 

CREATE OR REPLACE PROCEDURE nat_test_lsp_ws_3
IS

   l_amt NUMBER DEFAULT 8191;
   l_offset NUMBER DEFAULT 1;
   l_length NUMBER DEFAULT 0;
   v_clob CLOB;
   
 
BEGIN

SELECT dbms_xmlgen.getxml('select * from table(pkg_bp_eisa.lsp_exa_ws(7))') into v_clob FROM dual;
 htp.htmlopen;
  htp.bodyopen;
  l_length := dbms_lob.getlength(v_clob);
  dbms_output.put_line('Length of Clob:='||l_length);
  IF l_length > 0 THEN 
  WHILE (l_offset < l_length)
  LOOP
   htp.prn(dbms_lob.substr(v_clob, l_amt, l_offset));
   l_offset := l_offset + l_amt;
  END LOOP;
  END IF;
  htp.bodyclose;
  htp.htmlclose;
  

EXCEPTION
   WHEN OTHERS THEN
   dbms_output.put_line(dbms_utility.format_error_stack);
   dbms_output.put_line(dbms_utility.format_error_backtrace);
   RAISE;

END;
I get the error on line htp.prn...

However, if the clob size is too small, it is printing. Are there no restrictions for the clob to print size?

Thanks in advance.

Kind regards

Natarajan

Natarajan,

Your procedure works very well under the Express Application. If you run your procedure of SQL commands, no error is encountered. If you run it from SQL * more or outside of a context of APEX, then you will encounter the error you reported.

To remedy the problem, add the following line in the first executable statement in your procedure:

sys.htp.htbuf_len := 63;

Joel

Tags: Database

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