SQL & PL/SQL

create or replace
PROCEDURE send_mail_attach AS
BEGIN
UTL_MAIL.SEND_ATTACH_VARCHAR2(
sender => 'Junaid@matrix.com',
recipients => 'Junaid@matrix.com',
subject => 'Attachment Test Mail',
message => 'This is just a test mail with attachment.',
attachment => 'C:\',
att_filename => 'FED.txt');
EXCEPTION
WHEN UTL_SMTP.INVALID_OPERATION THEN
dbms_output.put_line(' Invalid Operation in Mail attempt using UTL_SMTP.');
WHEN UTL_SMTP.TRANSIENT_ERROR THEN
dbms_output.put_line(' Temporary e-mail issue - try again');
WHEN UTL_SMTP.PERMANENT_ERROR THEN
dbms_output.put_line(' Permanent Error Encountered.');
WHEN OTHERS THEN
RAISE_APPLICATION_ERROR(-20001,'The following error has occurred: ' || sqlerrm);
END;

EXECUTE send_mail_attach

how i can resolve this issue any body can help me plz......