1，
执行命令
jhat oom.txt日志如下：
Reading from oom.txt...
Dump file created Mon Jan 26 14:44:15 CST 2015
Snapshot read, resolving...
Resolving 15223723 objects...
WARNING: Failed to resolve object id 0xb2331c08 for field constantPoolOop (signature L)
Chasing references, expect 3044 dots..................................................................................................................................Snapshot resolved.
Started HTTP server on port 7000
Server is ready.