Oracle-L: Re:RE: dbms_job - running jobs every 15 minutes

From: <dgoulet_at_vicr.com>
Date: Wed, 22 Jan 2003 08:34:52 -0800
Message-ID: <F001.005377B0.20030122083452@fatcity.com>

One potential problem with DBMS_JOBS as is being discussed here is that Oracle computes the next_date at the end of the job. They do that so that if a job runs longer than it's schedule interval the two invocations will not run into each other. Now as discussed, if the job is scheduled to start at 9:00 AM and runbs for 5 minutes it's next_date for run #2 will be 9:20, not 9:15, and it will creep 5 minutes every time.

Dick Goulet

____________________Reply Separator____________________
Author: Freeman Robert - IL <FREEMANR_at_tusc.com>
Date:       1/22/2003 7:09 AM

Cron? How 1980's.... :-))

Robert G. Freeman
Technical Management Consultant
TUSC - The Oracle Experts www.tusc.com
904.708.5076 Cell (it's everywhere that I am!) Author of several books you can find on Amazon.com!

-----Original Message-----
Sent: Wednesday, January 22, 2003 7:19 AM To: Multiple recipients of list ORACLE-L

I simplified it by using cron instead ... <g>

Raj

Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.

QOTD: Any clod can have facts, but having an opinion is an art!

-----Original Message-----
<mailto:Jared.Still_at_radisys.com> ]

Sent: Tuesday, January 21, 2003 7:24 PM To: Multiple recipients of list ORACLE-L

Feeling particularly anal the other day, I used the following specification to
run statspack at the top of the hour, 15, 30 and 45 minutes after the hour.

variable jobno number;
variable instno number;
begin

        select instance_number into :instno from v$instance; 
        dbms_job.submit( 
                :jobno 
                , 'statspack.snap;' 
                -- every 15 minutes at 00,15,30 and 45 
                , trunc(sysdate,'hh24') +  ( ( 15 + ( 15 * 
floor(to_number(to_char(sysdate,'mi')) / 15))) / ( 24 * 60 )) 
                , 'trunc(sysdate,''hh24'') +  ( ( 15 + ( 15 * 
floor(to_number(to_char(sysdate,''mi'')) / 15))) / ( 24 * 60 ))' 
        ); 
        commit;

end;
/

Seems to me that the time specs could be simplified a bit. Anyone care to give it a go? :)
Jared

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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<TITLE>RE: dbms_job - running jobs every 15 minutes</TITLE>

<META content="MSHTML 6.00.2800.1126" name=GENERATOR></HEAD>
<BODY>
<DIV>Cron?
How 1980's.... :-))</DIV>
<DIV> </DIV>
<DIV>RF</DIV>
<DIV> </DIV>
Robert G. Freeman<FONT
face="Times New Roman"> Technical Management

Consultant TUSC - The Oracle Experts www.tusc.com 904.708.5076 Cell (it's everywhere that I am!) Author of several books you can find on Amazon.com! 
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
 <DIV class=OutlookMessageHeader dir=ltr align=left>-----Original Message----- From: Jamadagni, Rajendra [mailto:Rajendra.Jamadagni_at_espn.com] Sent: Wednesday, January 22, 2003 7:19 AM To: Multiple recipients of list ORACLE-L Subject: RE: dbms_job - running jobs every 15 minutes </DIV>
 I simplified it by using cron instead ... <g>


 Raj <FONT

  size=2>______________________________________________________</FONT> <BR><FONT

size=2>Rajendra Jamadagni              MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! 
 -----Original Message----- From: Jared.Still_at_radisys.com [<A
 href="mailto:Jared.Still_at_radisys.com">mailto:Jared.Still_at_radisys.com</A>]</FON T>
 Sent: Tuesday, January 21, 2003 7:24 PM To: Multiple recipients of list ORACLE-L Subject: dbms_job - running jobs every 15 minutes Feeling particularly anal the other day,  I used the following specification to run

statspack at the top of the hour, 15, 30 and 45 minutes after the hour. variable jobno number; variable instno

number; begin         select instance_number into :instno from v$instance;         dbms_job.submit(            &nbsp ;   
 :jobno            &nbsp ;   
 , 'statspack.snap;'            &nbsp ;

every 15 minutes at 00,15,30 and 45            &nbsp ;    , trunc(sysdate,'hh24') +  ( ( 15 + ( 15 * floor(to_number(to_char(sysdate,'mi')) / 15))) / ( 24 * 60 ))            &nbsp ;    , 'trunc(sysdate,''hh24'') +  ( ( 15 + ( 15 * floor(to_number(to_char(sysdate,''mi'')) / 15))) / ( 24 * 60 ))'

  <BR><FONT size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; );</FONT> 
  <BR><FONT size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; commit;</FONT> 
  <BR><FONT size=2>end;</FONT> <BR><FONT size=2>/</FONT> </P>
  <P><FONT size=2>Seems to me that the time specs could be simplified a

bit. Anyone care to give it a go?  :) Jared </BLOCKQUOTE></BODY></HTML>

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Received on Wed Jan 22 2003 - 10:34:52 CST