Help with DBMS Schedule

Question

Hello,
i have crated a dbms job usning dbms scheduler. i created a procedure to test this which has run every 28 days on a Wednesday. when i test this this job skips if a holiday falls on wEDNESDAY AND SHOULD RUN ON IMMEDAITE NEXT WEEK OF WEDNESDAY. my job works upto excluding the holidays, but doesn;t run immediate next wednesday instead its running the next shceduled 28 day of that wednesday. here is the code to test the job. PLease help...
BEGIN
SHOW_JOB_SCHEDULE(
sTARTDate => TO_DATE('01/04/2012','mm/dd/yyyy')
,ScheduleString => 'FREQ=DAILY; INTERVAL=28; BYHOUR=04; BYMINUTE=00; BYSECOND=00;EXCLUDE=FEDERALHOLIDAYS;'
,Iterations => 10
end;
i tried even with freq=weekly and interval=4 and byday=wed it still skips the Job if that is a holiday and goes to the next shceduled cycle instead i want to run next wednesday, when a holiday falls.
say for example the dates of cylce for 28 days is:
1/4/2012
1/31/2012
02/28/2012
03/27/2012
04/24/2012 etc....
could someone help pelase.....
Thanks a lot....

Answer 1

Maybe you could do something like this:
CREATE OR REPLACE PROCEDURE create_holiday_schedules
( p_year IN NUMBER )
AS
     lv_hol_schedule    VARCHAR2(200);
     lv_offhol_schedule VARCHAR2(200);
     sched_not_exists   EXCEPTION;
     PRAGMA EXCEPTION_INIT(sched_not_exists, -27476);
BEGIN
     /* Drop pre-existing Schedules */
     BEGIN
          DBMS_SCHEDULER.DROP_SCHEDULE
          ( schedule_name => 'FEDERAL_HOLIDAYS'
          , force         => TRUE
          DBMS_SCHEDULER.DROP_SCHEDULE
          ( schedule_name => 'OFF_FEDERAL_HOLIDAYS'
          , force         => TRUE
     EXCEPTION
          WHEN sched_not_exists THEN
               NULL;
     END;
     /* Retrieve holidays and off days */
     WITH dts AS
          SELECT TO_DATE('01/01/' || p_year,'MM/DD/YYYY')                AS pStartDate
               , ADD_MONTHS(TO_DATE('01/01/' || p_year,'MM/DD/YYYY'),12) AS pEndDate
          FROM   dual
     SELECT LISTAGG(TO_CHAR(dt_day,'DDD'),',') WITHIN GROUP (ORDER BY dt_day) AS hol_days
          , LISTAGG(TO_CHAR(dt_day + 7,'DDD'),',') WITHIN GROUP (ORDER BY dt_day) AS offhol_days
     INTO   lv_hol_schedule
          , lv_offhol_schedule
     FROM
          SELECT (CASE WHEN
          /* New Year's Day (01/01) */
          (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(TRUNC((pStartDate+(level-1)),'year'),'DY') = 'SAT'                                                        /* If New Year's falls on SAT, observe on Friday */
                                                  THEN TRUNC((pStartDate+(level-1)),'YEAR')- INTERVAL '1' DAY                                    
                                                  WHEN TO_CHAR(TRUNC((pStartDate+(level-1)),'year'),'DY') = 'SUN'                               /* If New Year's falls on SUN, observe on Monday */
                                                  THEN TRUNC((pStartDate+(level-1)),'YEAR')+ INTERVAL '1' DAY
                                                  ELSE TRUNC((pStartDate+(level-1)),'year')
                                             END)
          /* Martin Luther King Day (Third Monday in January) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(TRUNC((pStartDate+(level-1)),'YEAR'),'DY') = 'MON'
                                                  THEN TRUNC((pStartDate+(level-1)),'YEAR')+ INTERVAL '14' DAY
                                                  ELSE NEXT_DAY(TRUNC((pStartDate+(level-1)),'YEAR'),'MONDAY')+ INTERVAL '14' DAY
                                             END)
          /* Washington's Birthday (Third Monday in February) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),1),'DY') = 'MON'
                                                  THEN ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),1)+INTERVAL '14' DAY
                                                  ELSE NEXT_DAY(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),1),'MONDAY')+ INTERVAL '14' DAY
                                             END)
          /* Memorial Day (Last Monday in May) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),5)- INTERVAL '7' DAY,'DY') = 'MON'
                                                  THEN ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),5)- INTERVAL '7' DAY
                                                  ELSE NEXT_DAY(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),5)- INTERVAL '7' DAY,'MONDAY')
                                             END)
          /* Independence Day (Always 07/04) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(TRUNC(TO_DATE('07/04/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')),'DY') = 'SAT'                          /* If Independence Day falls on SAT, observe on Friday */
                                                  THEN TO_DATE('07/04/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')- INTERVAL '1' DAY
                                                  WHEN TO_CHAR(TRUNC(TO_DATE('07/04/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')),'DY') = 'SUN'      /* If Independence Day falls on SUN, observe on Monday */
                                                  THEN TO_DATE('07/04/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')+ INTERVAL '1' DAY
                                                  ELSE TO_DATE('07/04/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')
                                             END)
          /* Labor Day (First Monday in September) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),8),'DY') = 'MON'
                                                  THEN ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),8)
                                                  ELSE NEXT_DAY(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),8),'MONDAY')
                                             END)
          /* Columbus Day (Second Monday in October) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),9),'DY') = 'MON'
                                                  THEN ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),9)+INTERVAL '7' DAY
                                                  ELSE NEXT_DAY(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),9),'MONDAY')+ INTERVAL '7' DAY
                                             END)
          /* Veteran's Day (Always 11/11) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(TRUNC(TO_DATE('11/11/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')),'DY') = 'SAT'                          /* If Veteran's Day falls on SAT, observe on Friday */
                                                  THEN TO_DATE('11/11/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')- INTERVAL '1' DAY
                                                  WHEN TO_CHAR(TRUNC(TO_DATE('11/11/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')),'DY') = 'SUN'      /* If Veteran's Day falls on SUN, observe on Monday */
                                                  THEN TO_DATE('11/11/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')+ INTERVAL '1' DAY
                                                  ELSE TO_DATE('11/11/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')
                                             END)
          /* Thanksgiving (Fourth Thursday in November) */
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),10),'DY') = 'THU'
                                                  THEN ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),10)+INTERVAL '21' DAY
                                                  ELSE NEXT_DAY(ADD_MONTHS(TRUNC((pStartDate+(level-1)),'YEAR'),10),'THURSDAY')+ INTERVAL '21' DAY
                                             END)
          /* Christmas (Always 12/25) */          
          OR (pStartDate+(level-1)) = (CASE WHEN TO_CHAR(TRUNC(TO_DATE('12/25/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')),'DY') = 'SAT'                          /* If Christmas Day falls on SAT, observe on Friday */
                                                  THEN TO_DATE('12/25/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')- INTERVAL '1' DAY
                                                  WHEN TO_CHAR(TRUNC(TO_DATE('12/25/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')),'DY') = 'SUN'      /* If Christmas Day falls on SUN, observe on Monday */
                                                  THEN TO_DATE('12/25/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')+ INTERVAL '1' DAY
                                                  ELSE TO_DATE('12/25/' || TO_CHAR(pStartDate+(level-1),'YYYY'),'MM/DD/YYYY')
                                             END)
          THEN 'HOL'
          ELSE TO_CHAR(pStartDate+(level-1),'DY')
          END) days
          , pStartDate+(level - 1) AS dt_day
          FROM dts
          CONNECT BY level <= pEndDate-pStartDate
     WHERE days IN ('HOL')
     DBMS_SCHEDULER.CREATE_SCHEDULE
     ( schedule_name   => 'FEDERAL_HOLIDAYS'
     , start_date      => TO_DATE('01/01/' || p_year,'MM/DD/YYYY')
     , repeat_interval => 'BYYEAR_DAY=' || lv_hol_schedule
     , end_date        => ADD_MONTHS(TO_DATE('01/01/' || p_year,'MM/DD/YYYY'), 12)
     , comments        => 'Federal Holidays'
     DBMS_SCHEDULER.CREATE_SCHEDULE
     ( schedule_name   => 'OFF_FEDERAL_HOLIDAYS'
     , start_date      => TO_DATE('01/01/' || p_year,'MM/DD/YYYY')
     , repeat_interval => 'BYYEAR_DAY=' || lv_offhol_schedule
     , end_date        => ADD_MONTHS(TO_DATE('01/01/' || p_year,'MM/DD/YYYY'), 12)
     , comments        => 'Federal Holidays'
     /* Still need to enable jobs that use these schedules as they are disabled automatically */
     DBMS_SCHEDULER.ENABLE( name => 'My Job');
END;
/This is an adaptation of a query I wrote to automatically figure out working days for a giving start and end date range. I tweaked it to return the days of which a US Federal Holiday falls and when it's observed. For example if Christmas fell on a Sunday it'd be observed on a Monday. So once we have the list of holidays we can add a week to them to get the days that are required for the run on the following week. After that I use the 11g LISTAGG function to aggregate that data into a single string that will be used to create the schedule per the calendar syntax requirements. Then the schedules are created.
Please note that I drop the schedules at the start of the procedure which disables any jobs that use them. You'll need to enable those jobs again after the fact.
Additionally, you can take the query I have hear and replace it to me your needs. I just provided it as an example. This procedure has been parameterized so it can be run again every year re-creating the schedules.
Edited by: Centinul on Jan 31, 2012 10:54 AM