Transaction executing slow and database undo log increasing soon.

Question

Dears,
I developed a transaction which query database many times in a repeater loop and finally generate a SAP MII XML Output Document which I want to display in a html hyper link in MII Navigation.  (Using XacuteQuery and iGrid)
I found that
1. if I execute in SAP MII Workbench, the transaction executing very slow, and also the database undo log in D:\oracle\TMI\sapdata2\undo_1\UNDO.DATA1 increasing soon.
2. If I use MII Schedule Edit to run the transaction, it executing fast.
Does any one know why?
Is there any setting can make it executing fast in a MII Workbench?
Many thanks!
Ivan

Answer 1

Hi,
Can you explain why it's different by using MII Workbench and Scheduler depending on sql  joining and logic?
My transaction logical is basically as below,
1. query qualified sfc in SAPME tables
SELECT *
  FROM (SELECT   s.site, s.sfc, ss.operation_bo, ss.qty_in_queue,
                 ss.qty_in_work, s.priority, s.item_bo, s.shop_order_bo,
                 s.status_bo, ss.sfc_router_bo, ss.step_id, ss.step_sequence,
                 st.status_description, cf.ATTRIBUTE, cf.VALUE
            FROM sfc_step ss,
                 sfc s,
                 sfc_router sr,
                 sfc_routing srt,
                 status st,
                 custom_fields cf
           WHERE sr.handle = ss.sfc_router_bo
             AND srt.handle = sr.sfc_routing_bo
             AND s.handle = srt.sfc_bo
             AND st.handle = s.status_bo
             AND SUBSTR (s.status_bo, -3) IN ('402', '403', '404')
             AND sr.handle = ss.sfc_router_bo
             AND sr.in_use = 'true'
             AND ((ss.qty_in_queue > 0) OR (ss.qty_in_work > 0))
             AND s.site = '[Param.1]'
             AND cf.handle(+) = s.handle
             AND cf.ATTRIBUTE(+) = 'QTIMECONTROL'
             [Param.2]
        ORDER BY s.priority DESC, s.sfc)
WHERE (ATTRIBUTE = 'QTIMECONTROL' AND VALUE != 'N') OR VALUE IS NULL
2. use Repeater to query sfc's activity_log table
SELECT   al.site, al.sfc, al.operation, al.operation_revision, op.description,
         al.step_id,
            TO_CHAR (NEW_TIME (date_time, 'PST', 'GMT'),
                     'YYYY-MM-DD'
         || 'T'
         || TO_CHAR (NEW_TIME (date_time, 'PST', 'GMT'), 'HH24:MI:SS')
                                                                 AS date_time,
         TO_CHAR (NEW_TIME (date_time, 'PST', 'GMT'),
                  'YYYY/MM/DD HH24:MI:SS'
                 ) AS complete_date,
         cf.VALUE AS qtime, action_code, ss.operation_bo AS current_op,
         ss.step_id AS current_step_id,
         ss.step_sequence AS current_setp_sequence,
         al.item || ',' || al.item_revision AS item,
         TO_CHAR (SYSDATE, 'YYYY/MM/DD HH24:MI:SS') AS check_time,
         (sysdate-NEW_TIME (date_time, 'PST', 'GMT'))2460 as difference
    FROM activity_log al,
         custom_fields cf,
         sfc s,
         sfc_routing srg,
         sfc_router sr,
         sfc_step ss,
         operation op
   WHERE al.site = '[Param.1]'
     AND (action_code IN( 'COMPLETE' , 'START' , 'SIGNOFF'))
     AND al.sfc = '[Param.2]'
     AND cf.handle(+) =
               'OperationBO:'
            || al.site
            || ','
            || al.operation
            || ','
            || al.operation_revision
     AND cf.ATTRIBUTE(+) = 'QTIME'
     AND s.handle = srg.sfc_bo
     AND srg.handle = sr.sfc_routing_bo
     AND 'true' = sr.in_use
     AND sr.handle = ss.sfc_router_bo
     AND 0 < ss.qty_in_queue + ss.qty_in_work
     AND s.sfc = al.sfc
     AND al.operation = op.operation
     AND al.operation_revision = op.revision
     AND op.site= '[Param.1]'
     AND al.operation NOT LIKE '%-W'
ORDER BY date_time DESC
3. call another transaction to parse  input data and get output data
4. parse get back data to form a MII xml output Document.
Thanks!