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Status Future consideration
Workspace Db2 for z/OS
Created by Guest
Created on May 21, 2013

Process times out due to locks held by another process. Have to resubmit the process.

Process times out due to locks held by another process. Have to resubmit the processes.

The first process has an exclusive lock on a row, the second process is trying to run an UPDATE statement (see below) and times out because it
can't get an UPDATE lock. The problem is, the WHERE EXIST statement doesn't have anything in this case so it won't UPDATE anything and
there never was a need to lock the table. Supposedly with Oracle, the WHERE EXIST SELECT statement would be checked first and the table would never be locked.

The PS_EXCANPMT_TAO1 table was empty at the time so no rows would need to be updated. The process it was waiting for should only have one row of the PS_EX_SHEET_HDR locked.

16.04.47 ... (EX_CANCL_PMT.CLOSESHT.SHT_STA2)(SQL)
UPDATE PS_EX_SHEET_HDR SET BUDGET_HDR_STATUS = 'N'
WHERE EXISTS ( SELECT 'X' FROM PS_EXCANPMT_TAO1 C , PS_KK_SOURCE_HDR K
WHERE C.SHEET_ID = PS_EX_SHEET_HDR.SHEET_ID AND K.SHEET_ID = C.SHEET_ID ) /
-- Row(s) affected: 0

16.05.51 Process 1174018 ABENDED at Step EX_CANCL_PMT.CLOSESHT.SHT_STA2
(Action SQL) -- RC = 8601 ROLLBACK