我创建了一个发送传递提醒电子邮件的程序。它将检查今天应该交付的PO并将项目列表发送给相应的员工。我还创建了一份工作，每天下午5点运行它。所以我认为它应该每天发送一次电子邮件。但实际上我每天总共收到6-7封邮件，电子邮件接收时间是从下午1:00到下午4:00。我不知道这是什么问题？我应该在哪里寻找原因？这是Oracle的SQL问题还是设置问题？我们使用了Oracle 11g数据库。任何帮助赞赏。感谢。
过程SQL 是：
CREATE OR REPLACE PROCEDURE SP_PO_INFO IS
/******************************************************************************
NAME: SP_PRList_Assign
REVISIONS:
Ver Date Author Description
--------- ---------- --------------- ------------------------------------
1.0 2011-09-08 Terry Sun PR First assign Inform
******************************************************************************/
TYPE M_VAR IS VARRAY(500) OF VARCHAR2(2000);
M_BODY M_VAR := M_VAR();
L_OFFSET NUMBER;
M_SQLERRM VARCHAR2(300);
CONN UTL_SMTP.CONNECTION;
MAILSUBJECT VARCHAR2(3000);
MAILBODY VARCHAR2(32767);
MAIL_TO_REC VARCHAR2(2000);
MAIL_CC_REC VARCHAR2(2000);
MAIL_BCC_REC VARCHAR2(2000);
L_CNT INTEGER;
L_TOTAL INTEGER;
--PR confirm completed no assign list
CURSOR PO_INFO IS
SELECT distinct TO_CHAR(PMN33, 'yyyy-mm-dd') PMN33,
PMK12,
GEN02,
GEN06,
PMN01,
PMN04,
PMN041,
PMN07,
PMN20,
PMN24,
PMMUD02
FROM ZING.PMN_FILE, ZING.PMM_FILE,ZING.PMK_FILE, ZING.GEN_FILE, ZING.GEM_FILE
WHERE PMN01 = PMM01
AND PMN24 = PMK01
AND PMK25 = '2'
AND PMK12 = GEN01(+)
and TO_CHAR(PMN33, 'yyyy-mm-dd')= TO_CHAR(SYSDATE, 'yyyy-mm-dd')
and pmm25='2' ;
--REceive E-mail Address
CURSOR MAIL_ADD IS
SELECT distinct TO_CHAR(PMN33, 'yyyy-mm-dd') PMN33,gen01,
GEN02,
GEN06
FROM ZING.PMN_FILE, ZING.PMK_FILE, ZING.GEN_FILE, ZING.GEM_FILE
WHERE PMN24 = PMK01
AND PMK25 = '2'
AND PMK12 = GEN01(+)
and TO_CHAR(PMN33, 'yyyy-mm-dd')= TO_CHAR(SYSDATE, 'yyyy-mm-dd');
BEGIN
----------Total not assign PR---------------------------------
SELECT COUNT(*)
INTO L_TOTAL
FROM ZING.PMM_FILE, ZING.PMN_FILE
WHERE PMM01 = PMN01
AND PMM18 = 'Y'
AND PMM25 = '2'
AND TO_CHAR(PMN33, 'yyyy-mm-dd')= TO_CHAR(SYSDATE, 'yyyy-mm-dd')
ORDER BY PMM01, PMM02;
-- if no information or the date in ('saturday','sunday') not send mail
IF L_TOTAL = 0 OR TO_CHAR(SYSDATE, 'd') = '1' OR
TO_CHAR(SYSDATE, 'd') = '7' THEN
RETURN;
ELSE
FOR Y IN MAIL_ADD LOOP
-- MAIL Subject
MAILSUBJECT := 'ERP alarm';
MAILBODY := '<BR>' || 'Dear All :' || '<BR><BR>';
MAILBODY := MAILBODY || 'inventory will arrive today' ||'<BR>';
MAILBODY := MAILBODY || '<TABLE BORDER=1 CELLSPACING=0><TR>';
-- lable column
MAILBODY := MAILBODY || '<TD ALIGN=CENTER BGCOLOR=C0C0C0>' || 'Item' ||
'</TD>';
MAILBODY := MAILBODY || '<TD ALIGN=CENTER BGCOLOR=C0C0C0>' || 'Amount' ||
'</TD>';
MAILBODY := MAILBODY || '<TD ALIGN=CENTER BGCOLOR=C0C0C0>' || 'Date' ||
'</TD></TR>'|| UTL_TCP.CRLF;
L_CNT := 0;
FOR X IN PO_INFO LOOP
if (x.pmk12=y.gen01) then
M_BODY.EXTEND;
L_CNT := L_CNT + 1;
M_BODY(L_CNT) := '<TR><TD>' || X.PMN24 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMN01 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMN33 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMK12 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.GEN02 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMN04 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMN041 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMN07 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' || X.PMN20 || '</TD>';
M_BODY(L_CNT) := M_BODY(L_CNT) || '<TD>' ||
X.PMMUD02 || '</TD></TR> ' || UTL_TCP.CRLF;
end if;
END LOOP;
-- last page
M_BODY.EXTEND;
L_CNT := L_CNT + 1;
M_BODY(L_CNT) := ' </TABLE>' || UTL_TCP.CRLF;
-- MAIL CONTENT
CONN := UTL_SMTP.OPEN_CONNECTION('10.10.22.26', 25);
UTL_SMTP.HELO(CONN, '10.10.22.26');
UTL_SMTP.MAIL(CONN, 'ricky.luo@zitest.com');
MAIL_BCC_REC := '';
UTL_SMTP.RCPT(CONN, Y.GEN06);
MAIL_BCC_REC := MAIL_BCC_REC || 'ricky.luo@zitest.com' || ',';
MAIL_CC_REC := '';
UTL_SMTP.OPEN_DATA(CONN);
-- UTL_SMTP.WRITE_DATA(CONN, 'Date:' || TO_CHAR( SYSDATE, 'yyyy/mm/dd hh24:mi:ss' ) || utl_tcp.CRLF); --This date will result in send mail time err!
UTL_SMTP.WRITE_DATA(CONN,
'From:' || 'IT <ERP Administrator>' || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(CONN,
'Subject: ' ||
UTL_ENCODE.MIMEHEADER_ENCODE(CONVERT(MAILSUBJECT,
'AL32UTF8')) ||
UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(CONN, 'TO: ' ||Y.GEN02 || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(CONN, 'CC: ' || MAIL_CC_REC || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(CONN, 'BCC: ' || MAIL_BCC_REC || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(CONN, 'MIME-VERSION: 1.0' || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(CONN,
'CONTENT-TYPE: TEXT/HTML;CHARSET=AL32UTF8;' ||
UTL_TCP.CRLF);
UTL_SMTP.WRITE_RAW_DATA(CONN,
UTL_RAW.CAST_TO_RAW('' || UTL_TCP.CRLF ||
MAILBODY));
FOR L_OFFSET IN 1 .. L_CNT LOOP
UTL_SMTP.WRITE_RAW_DATA(CONN,
UTL_RAW.CAST_TO_RAW('' || UTL_TCP.CRLF ||
M_BODY(L_OFFSET)));
END LOOP;
UTL_SMTP.CLOSE_DATA(CONN);
UTL_SMTP.QUIT(CONN);
END loop;
END IF;
EXCEPTION
WHEN OTHERS THEN
M_SQLERRM := SQLERRM;
RAISE_APPLICATION_ERROR(-20001, M_SQLERRM);
RAISE;
END;
工作是：
begin
sys.dbms_job.submit(job => :job,
what => 'SP_PO_INFO;',
next_date => to_date('02-06-2018 06:56:13', 'dd-mm-yyyy hh24:mi:ss'),
interval => 'sysdate+1');
commit;
end;
/