JR49359: DUPLICATE EXECUTION OF EVENT MANAGER TASKS WITH ORACLE UNDER HIGH LOAD.
Fixes are available
Closed as program error.
Duplicate Execution of Event Manager Tasks with Oracle under high load. . Beginning with BPM Version 220.127.116.11, Event Manaager queries were restructured. The new Oracle version of <loader-find-task-query> can under high load in a cluster topology lead to a situation where multiple Event Manager Instances load and executy the same Event Manager task.
Beginning with BPM Version 18.104.22.168, Event Manager queries were restructured. The new Oracle version of <loader-find-tasks-query> under high load in a cluster topology can lead to a situation where multiple Event Manager Instances load and execute the same Event Manager task. PROBLEM DETAILED DESCRIPTION: The problem is caused by subtle details of Oracle's processing of the <loader-find-tasks-query>. If the LSW_EM_TASK table contains thousands of records, the load on the system is high, and multiple Event Manager instances are running concurrently, it can happen that the same LSW_EM_TASK record is returned to more than one Event Manager instance.
Modify the query so that Oracle returns only unique LSW_EM_TASK records to each Event Manager instance. FIX AVAILABILITY: iFix for 22.214.171.124 is/will be available on Fix Central; search for APAR JR49359 at http://www.ibm.com/support/fixcentral/ iFix for 126.96.36.199 is/will be available on Fix Central; search for APAR JR49359 at http://www.ibm.com/support/fixcentral/ iFix for 188.8.131.52 is/will be available on Fix Central; search for APAR JR49359 at http://www.ibm.com/support/fixcentral/ Fix is also targetted for inclusion in next fixpack for BPM 8.0.1 When obtaining any of the above fixes, be sure to download the accompanying readme, for itself, and any prerequisite fixes, and review them thoroughly.
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