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https://www.e-learn.cn/content/wangluowenzhang/37475
https://blog.csdn.net/renfufei/article/details/41897113
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html#G1Options
http://geek.csdn.net/news/detail/92144
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DATE=`date +%y%M%d%H%m%S`
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/weblogic/tmp/sysnm-$DATE.hprof
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