如何产生core dump , heap dump进行分析

实际core dump也就是Thread dump也叫java dump,保留了当时的thread信息.

用wsadmin可以在任何平台产生 core dump 和 heap dump

wsadmin>set jvm [$AdminControl queryNames WebSphere:type=JVM,process=your server name,node=your node name,*]java corewsadmin>$AdminControl invoke $jvm dumpThreadsheap dump$AdminControl invoke $jvm generateHeapDump

一、设置参数通过was控制台IBM_HEAPDUMP trueIBM_HEAP_DUMP trueIBM_HEAPDUMPDIR d:\二、在命令行中分别执行以下语句d:\WebSphere\AppServer\binwsadmin.batset jvm [$AdminControl completeObjectName type=JVM,process=appa,*]$AdminControl invoke $jvm dumpThreads

此外用kill -3 pid的方法可以产生core dump,普通的jdk用nohup执行会把结果放到nohup.out

pstack/jstack