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I see a deadlock on my ccm SQL server database . Is there a way to prevent it?


Glenn Bardwell (57621427) | asked Nov 16 '12, 9:55 a.m.
JAZZ DEVELOPER
 I see a deadlock on my ccm SQL server database for. Is there a way to prevent it?
The deadlock looks like

SQL: select t1.ITEM_ID, t1.STATE_ID from (select * from REPOSITORY.CHANGE_EVENT r1 where r1.CONTEXT_ID in(?, ?, ?)) t1 where ((t1.MODIFIED >= ?) and ((t1.EVENT_PROCESS_AREA_ITEM_ID = ?) or (t1.EVENT_PROCESS_AREA_ITEM_ID = ?) or (t1.EVENT_PROCESS_AREA_ITEM_ID = ?) or (t1.EVENT_PROCESS_AREA_ITEM_ID = ?) or (t1.EVENT_PROCESS_AREA_ITEM_ID = ?) or (t1.EVENT_PROCESS_AREA_ITEM_ID = ?)) and (t1.EVENT_CATEGORY <> ?) and (t1.EVENT_CATEGORY <> ?)) order by t1.EVENT_TIME desc
SQL Exception #1
SQL Message: Transaction (Process ID 84) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
SQL State: 40001

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Glenn Bardwell (57621427) | answered Nov 16 '12, 9:57 a.m.
JAZZ DEVELOPER
Make sure you have set the READ_COMMITTED_SNAPSHOT.This setting will avoid many deadlocks.  See the infocenter link for details. 

http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0/topic/com.ibm.jazz.install.doc/topics/t_s_server_installation_setup_sql.html

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