When ever employee position changed, an alert should send an email

Question

we have one requirement...
when ever any employee position changed, it should send an email ..how to do this one? any idea?
employee positions are recorded in PER_ALL_ASSIGNMENTS_F table, so if we create event alert on this table ( update ). event alert fires if there is any update to the table...but i want, only alert should send mail, when position column got updated in that table...
is it possible????

Answer 1

Oracle provides standard API’s to harness the databases SMTP server capabilities in sending emails. All email services are wrapped under package: UTL_SMTP. The protocol consists of a set of commands for an email client to dispatch emails to a SMTP server. The UTL_SMTP package provides interfaces to the SMTP commands. For many of the commands, the package provides both a procedural and a functional interface. The functional form returns the reply from the server for processing by the client. The procedural form checks the reply and will raise an exception if the reply indicates a transient (400-range reply code) or permanent error (500-range reply code). Otherwise, it discards the reply.
c := UTL_SMTP.OPEN_CONNECTION('<server>.unix.us.ups.com');
UTL_SMTP.HELO(c, '<server>.unix.us.ups.com');
UTL_SMTP.MAIL(c, l_recepient);
UTL_SMTP.RCPT(c, l_recepient);
UTL_SMTP.OPEN_DATA(c);
send_header('From', p_from);
send_header('To', l_recepient);
send_header('Subject', p_subject);
UTL_SMTP.WRITE_DATA(c, UTL_TCP.CRLF || p_message);
UTL_SMTP.CLOSE_DATA(c);
UTL_SMTP.QUIT(c);