CREATE TABLE SIGNS
(
  LSEQ       NUMBER(12)                      NOT NULL,
  SIGNATURE  BLOB
)
TABLESPACE TBS01
  LOB (STRSIGNATURE) STORE AS 
      ( TABLESPACE  TBS01
        ENABLE      STORAGE IN ROW
        CHUNK       8192
        PCTVERSION  10
        NOCACHE
        STORAGE    (
                    INITIAL          64K
                    MINEXTENTS       1
                    MAXEXTENTS       2147483645
                    PCTINCREASE      0
                    BUFFER_POOL      DEFAULT
                   )
      );

 declare
    l_blob    blob;
    l_bfile    bfile;
begin
    insert into SIGNS values ( 3, empty_blob() ) 
    returning SIGNATURE into l_blob;

    l_bfile := bfilename( 'DIR9', 'mast2.bmp' );
    dbms_lob.fileopen( l_bfile );

    dbms_lob.loadfromfile( l_blob, l_bfile, 
                           dbms_lob.getlength( l_bfile ) );

    dbms_lob.fileclose( l_bfile );
end;
/
commit;

1)
edit SIGNS where lseq=5;

2)
Right clicked the record displayed

3) Clicked "Memo Editor"

4) Clicked "Load File" icon

5) Selected a file 'c:\test.bmp' from local drive.

6) commited the transaction.