Loading PDF Files Into Bfile

I am trying to load the pdf files into bfile.

create directory TEST13 as 'C:\temp';
create table test102(id number(4),aaa bfile);
insert into test102 values(1234,bfilename('TEST13','sg1.pdf'));
select * from test102;
1234 (BFILE)
select id, DBMS_LOB.GETLENGTH(aaa) from test102;
ORA-22288: file or LOB operation GETLENGTH failed
[code]...

I stored some pdf files in c:\temp in local machine. DBA suggests not to put the files on DB server. Is there a way to read the pdf files without storing them in DB server?