oracle 發mail亂碼問題

[zhuqiang9]

DECLARE

SendorAddress Varchar2(30) := '[e-mail]';
ReceiverAddress varchar2(30) := '[e-mail]';
EmailServer varchar2(30) := '10.10.1.20';
Port number := 25;

conn UTL_SMTP.CONNECTION;

crlf VARCHAR2( 2 ):= CHR( 13 ) || CHR( 10 );

mesg VARCHAR2( 4000 );
mesg_body varchar2(4000);


BEGIN

conn:= utl_smtp.open_connection( EmailServer, Port );
utl_smtp.helo( conn, EmailServer );
utl_smtp.mail( conn, SendorAddress);
utl_smtp.rcpt( conn, ReceiverAddress );

mesg:=
'Content-Type: text/html; Charset=UTF8' || crlf ||
'Date:' || TO_CHAR( SYSDATE, 'dd Mon yy hh24:mi:ss' ) || crlf ||
'From:' || SendorAddress || crlf ||
'Subject: Sending Mail From Database' || crlf ||
'To: '|| ReceiverAddress || crlf ||
'Content-Type: text/html; Charset=UTF8' || crlf ||
'' || crlf ||
'謝謝!' || crlf;

utl_smtp.data( conn, mesg );
utl_smtp.quit( conn );

END;

字顯示不出來，顯示問號，誰能幫忙解決下

[BlueskyWide]

http://topic.csdn.net/t/20030710/20/2014176.html