Lob length

Question

Hello experts
I am trying to get lob length for sdo_geometry. I have posted a thread in spatial forum and they have directed me to here. The link is below.
https://community.oracle.com/thread/3647077?customTheme=otn
When i try to get lob length for sdo_geometry, i am getting ora 00904 error "invalid identifier".
SELECT NVL((SUM(DBMS_LOB.GETLENGTH(GEOMETRY.SDO_ORDINATES))),0) AS BYTES
FROM ROADS;
SELECT NVL((SUM(DBMS_LOB.GETLENGTH(GEOMETRYSDO_ELEM_INFO.SDO_ELEM_INFO))),0) AS BYTES
FROM ROADS;
How to get lob length ?

Answer 1

Hi,
I have made a test with BLOB column ...
legatti@icaro:/tmp> ls -l test.jpg
-rw-r--r--  1 oracle oinstall 1502720 2008-05-29 16:58 test.jpg
SQL> create table my_image_table (
  id number,
  name varchar2(20),
  image blob
Table created.
SQL> create or replace directory images as '/tmp';
Directory created.
SQL> create or replace procedure load_file_to_my_table (p_file_name in my_image_table.name%type) as
  v_bfile bfile;
  v_blob blob;
begin
  insert into my_image_table (id,name,image)
  values (1,p_file_name,empty_blob())
  return image into v_blob;
  v_bfile := bfilename('IMAGES',p_file_name);
  dbms_lob.fileopen(v_bfile, dbms_lob.file_readonly);
  dbms_lob.loadfromfile(v_blob,v_bfile,dbms_lob.getlength(v_bfile));
  dbms_lob.fileclose(v_bfile);
  commit;
end;
Procedure created.
SQL> execute load_file_to_my_table('test.jpg');
PL/SQL procedure successfully completed.
SQL> select dbms_lob.getlength(image) from my_image_table;
DBMS_LOB.GETLENGTH(IMAGE)
                  1502720In this context, I suppose that one character is one byte ...
Cheers
Legatti