How convert long text to UTF8 in Oracle 11g? - sql

Question

I have large text around 20000 I need convert to UTF8.
select convert('large text','UTF8') from dual
I get error:
ORA-01704: string literal too long
Try this get another error
declare
v_hugetxt varchar2(32767);
begin
v_hugetxt:='huge text'
select convert(v_hugetxt,'UTF8') into v_hugetxt
from dual;
end;
I get error
ORA-01460: unimplemented or unreasonable conversion requested tips ·
Incompatible character sets can cause an ORA-01460

Answer 1

I found solution but worked
FYI
create or replace function v_blobtoclob(v_blob_in in blob) return clob is
v_file_clob clob;
v_file_size integer := dbms_lob.lobmaxsize;
v_dest_offset integer := 1;
v_src_offset integer := 1;
v_blob_csid number := dbms_lob.default_csid;
v_lang_context number := dbms_lob.default_lang_ctx;
v_warning integer;
v_length number;
begin
dbms_lob.createtemporary(v_file_clob, true);
dbms_lob.converttoclob(v_file_clob,
v_blob_in,
v_file_size,
v_dest_offset,
v_src_offset,
v_blob_csid,
v_lang_context,
v_warning);
return v_file_clob;
exception
when others then
dbms_output.put_line('Error found');
end;
CREATE OR REPLACE FUNCTION clob_to_blob (p_clob CLOB, p_charsetname VARCHAR2)
RETURN BLOB
AS
l_lang_ctx INTEGER := DBMS_LOB.default_lang_ctx;
l_warning INTEGER;
l_dest_offset NUMBER := 1;
l_src_offset NUMBER := 1;
l_return BLOB;
BEGIN
DBMS_LOB.createtemporary (l_return, FALSE);
DBMS_LOB.converttoblob (
l_return,
p_clob,
DBMS_LOB.lobmaxsize,
l_dest_offset,
l_src_offset,
CASE WHEN p_charsetname IS NOT NULL THEN NLS_CHARSET_ID (p_charsetname) ELSE DBMS_LOB.default_csid END,
l_lang_ctx,
l_warning);
RETURN l_return;
END;
declare
v_hugetxt clob;
v_hugetxt2 blob;
v_hugetxt3 clob;
offset int;
clobsize number;
begin
v_hugetxt:='huge text';
select bnf.clob_to_blob(v_hugetxt,'UTF8') into v_hugetxt2 from dual;
select bnf.v_blobtoclob(v_hugetxt2) into v_hugetxt3 from dual;
dbms_output.put_line('Print CLOB');
offset:=1;
loop
exit when offset > dbms_lob.getlength(v_hugetxt3);
dbms_output.put_line(dbms_lob.substr(v_hugetxt3, 255, offset));
offset := offset + 255;
end loop;
DBMS_OUTPUT.PUT_LINE('clob out = ' || v_hugetxt3);
end;
That's it