Oracle UTL_STMP-无内容

我通过UTL_SMTP通过Oracle数据库发送电子邮件。这是每天自动发送的电子邮件

但有时电子邮件中没有内容，会发送一封空白邮件

这是我的代码：

c := UTL_SMTP.OPEN_CONNECTION(sMailserver);
UTL_SMTP.HELO(c, sMailserver);
UTL_SMTP.MAIL(c, sFrom);
UTL_SMTP.RCPT(c, sRecipients);
UTL_SMTP.OPEN_DATA(c);

UTL_SMTP.write_data(c, 'To: ' || sRecipients || UTL_TCP.crlf);
UTL_SMTP.write_data(c, 'From: ' || sFrom || UTL_TCP.crlf);
UTL_SMTP.write_data(c, 'Subject: ' || REPLACE(sDescr, '[DATE]',TO_CHAR(sDATE,'DD.MM.YYYY')) || UTL_TCP.crlf);
UTL_SMTP.write_data(c, 'Content-Type: text/html;' || UTL_TCP.crlf);

-- Write data      
UTL_SMTP.write_data(c, sData);

UTL_SMTP.CLOSE_DATA(c);
UTL_SMTP.QUIT(c);

---

答案是在标题数据和正文数据之间加一行：

UTL_SMTP.write_data(c, 'Content-Type: text/html;' || UTL_TCP.crlf);

-- Extra line between header and body
UTL_SMTP.write_data(c, UTL_TCP.crlf); 

-- Write data
UTL_SMTP.write_data(c, sData);