text: 
  set serveroutput on format wrapped size unlimited
  set linesize 200 trimspool on
  set pagesize 0
  col text format a50
  
  set long 20000
  
  spool bt.log
  
  SELECT * FROM  TABLE(hexdump_binary.hexdump(cursor(select my_blob from binary_test where name = 'BLOB' )))
  /
  
  spool off
  
  ed bt.log
  set pagesize 100
  
  
  
  