ibm websphere outofmemoryexception


often, i found outofmemoryexception ibm websphere concentration server.
i cruise difference start since concentration collect vast information database. so, i border query don't retreive information some-more 1000 annals set jvm follow



+ plain rubbish collection
+ border store distance = 1024 (ram server 16 gb i already change 8192)
+ debug arguments = -djava.compiler=none -xdebug -xnoagent  
                    -xrunjdwp:transport=dt_socket,server=y,suspend=n,address=7777
+ general jvm arguments = -dsun.rmi.dgc.server.gcinterval=60000 
                          -dsun.rmi.dgc.client.gcinterval=60000 -xdisableexplicitgc  
                          -dws.log=e:\webapp\log -dws.log.level=debug
(ws.log ws.log.level properties)


and i found heapdump, javacore snap files profiles folder i cruise tell me means problem nonetheless i don't know read/use heapdump, javacore snap files.



please tell me prevent/avoid/fix outofmemoryexception.
thanks



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