EBS并发请求中有可以设置计划用以定时运行，计划存储在 fnd_conc_release_classes表中，通过release_class_id与请求表fnd_concurrent_requests关联。

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详细信息如下：

RELEASE_CLASS_ID: 主键，与fnd_concurrent_requests关联.

CLASS_TYPE: contains value 'P' for "Periodic" schedules, 'S' for "on Specific Days" schedules and 'X' for "advanced schedules".  P:定期，S:在特定日期，X:高级

DATE1: start date of the schedule ("Start at" field in the form) 起始日期

DATE2: end date of the schedule ("End at" field in the form), as fnd_concurrent_requests.resubmit_end_date 终止日期

CLASS_INFO: this is the most interesting field as it contains all the information needed for rescheduling. The format of the field depends on the type of schedule. 因计划类型的不同，数据格式也随之出现差异.

"PERIODIC" schedule: 定期

In case of Periodic schedule fnd_conc_release_classes.CLASS_INFO field contains values like "2:D:S" or X:Y:Z where:

X – number of months/weeks/days/hours/minutes the request has to be rescheduled from prior run.

Y – contains a single letter representing units

"M" – months;

"D" – days;

"H" – hours;

"N" – minutes;

(there is no representation of "weeks" option. If you specify interval in weeks, it’s automatically calculated and stored in "days").

Z – contains a single letter to represent if the rescheduling has to be done from start or from completion of the prior run

S – from the start of the prior run;

C – from the completion of the prior run.

Some samples:

30:N:S – Repeat every 30 minutes from the start of the prior run

5:N:C – Repeat every 5 minutes from the completion of the prior run

12:H:S – Repeat every 12 hours from the start of the prior run

It’s interesting that information about intervals of periodic schedules is duplicated infnd_concurrent_requests table fields RESUBMIT_INTERVAL, RESUBMIT_INTERVAL_TYPE_CODE and RESUBMIT_INTERVAL_UNIT_CODE.

"ON SPECIFIC DAY" schedule: 在特定日期

In case of on Specific Day schedule fnd_conc_release_classes.CLASS_INFO field contains values like "000010000000000000000000000000010000000" – a 39 character value consisting of 0 and 1. The idea is that the placement of 1-s represent the options selected through form:

1-s at places 1 to 31 – represent dates, when request has to be run, eg, if the 10th character is "1" – the request is scheduled to run on 10th day of each month;

character "1" at the 32nd position – specifies that the request has to be run at the last day of each month;

1-s at places 33 to 39 – specifies days of week (Sunday – Saturday)the request has to be run. if the 33rd character is "1" – the request is scheduled to run each Sunday, if 34th – on Monday and so on.

Some samples:

000000000000000000000000000000000000001 – Days of week: Sa

111111111000000000000000000000000111110 – Dates: 1 2 3 4 5 6 7 8 9. Days of week: Mo Tu We Th Fr

000000000000000000000000000000010000000 – Last day of month

最后，奉上一段SQL:

SELECT r.Request_Id,
       p.User_Concurrent_Program_Name || CASE
           WHEN p.User_Concurrent_Program_Name = 'Report Set' THEN
            (SELECT ' - ' || s.User_Request_Set_Name
               FROM Fnd_Request_Sets_Tl s
              WHERE s.Application_Id = r.Argument1
                AND s.Request_Set_Id = r.Argument2
                AND LANGUAGE = 'US')
           WHEN p.User_Concurrent_Program_Name = 'Check Periodic Alert' THEN
            (SELECT ' - ' || a.Alert_Name
               FROM Alr_Alerts a
              WHERE a.Application_Id = r.Argument1
                AND a.Alert_Id = r.Argument2
                AND LANGUAGE = 'US')
       END Concurrent_Program_Name,
       CASE
           WHEN p.User_Concurrent_Program_Name != 'Report Set' AND
                p.User_Concurrent_Program_Name != 'Check Periodic Alert' THEN
            r.Argument_Text
       END Argument_Text,
       r.Requested_Start_Date Next_Run,
       r.Hold_Flag On_Hold,
       Decode(c.Class_Type,
              'P',
              'Periodic',
              'S',
              'On Specific Days',
              'X',
              'Advanced',
              c.Class_Type) Schedule_Type,
       CASE
           WHEN c.Class_Type = 'P' THEN
            'Repeat every ' ||
            Substr(c.Class_Info, 1, Instr(c.Class_Info, ':') - 1) ||
            Decode(Substr(c.Class_Info,
                          Instr(c.Class_Info, ':', 1, 1) + 1,
                          1),
                   'N',
                   ' minutes',
                   'M',
                   ' months',
                   'H',
                   ' hours',
                   'D',
                   ' days') ||
            Decode(Substr(c.Class_Info,
                          Instr(c.Class_Info, ':', 1, 2) + 1,
                          1),
                   'S',
                   ' from the start of the prior run',
                   'C',
                   ' from the completion of the prior run')
           WHEN c.Class_Type = 'S' THEN
            Nvl2(Dates.Dates, 'Dates: ' || Dates.Dates || '. ', NULL) ||
            Decode(Substr(c.Class_Info, 32, 1), '1', 'Last day of month ') ||
            Decode(Sign(To_Number(Substr(c.Class_Info, 33))),
                   '1',
                   'Days of week: ' ||
                   Decode(Substr(c.Class_Info, 33, 1), '1', 'Su ') ||
                   Decode(Substr(c.Class_Info, 34, 1), '1', 'Mo ') ||
                   Decode(Substr(c.Class_Info, 35, 1), '1', 'Tu ') ||
                   Decode(Substr(c.Class_Info, 36, 1), '1', 'We ') ||
                   Decode(Substr(c.Class_Info, 37, 1), '1', 'Th ') ||
                   Decode(Substr(c.Class_Info, 38, 1), '1', 'Fr ') ||
                   Decode(Substr(c.Class_Info, 39, 1), '1', 'Sa '))
       END Schedule,
       c.Date1 Start_Date,
       c.Date2 End_Date,
       c.Class_Info
  FROM Fnd_Concurrent_Requests r,
       Fnd_Conc_Release_Classes c,
       Fnd_Concurrent_Programs_Tl p,
       (SELECT Release_Class_Id,
               Substr(MAX(Sys_Connect_By_Path(s, ' ')), 2) Dates
          FROM (SELECT Release_Class_Id,
                       Rank() Over(PARTITION BY Release_Class_Id ORDER BY s) a,
                       s
                  FROM (SELECT c.Class_Info,
                               l,
                               c.Release_Class_Id,
                               Decode(Substr(c.Class_Info, l, 1),
                                      '1',
                                      To_Char(l)) s
                          FROM (SELECT LEVEL l FROM Dual CONNECT BY LEVEL <= 31),
                               Fnd_Conc_Release_Classes c
                         WHERE c.Class_Type = 'S')
                 WHERE s IS NOT NULL)
        CONNECT BY PRIOR
                    (a || Release_Class_Id) = (a - 1) || Release_Class_Id
         START WITH a = 1
         GROUP BY Release_Class_Id) Dates
 WHERE r.Phase_Code = 'P'
   AND c.Application_Id = r.Release_Class_App_Id
   AND c.Release_Class_Id = r.Release_Class_Id
   AND Nvl(c.Date2, SYSDATE + 1) > SYSDATE
   AND c.Class_Type IS NOT NULL
   AND p.Concurrent_Program_Id = r.Concurrent_Program_Id
   AND p.Application_Id = r.Program_Application_Id
   AND p.Language = 'US'
   AND Dates.Release_Class_Id(+) = r.Release_Class_Id
 ORDER BY On_Hold, Next_Run;

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