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JHAT cannot parse memory dump

I have a memory dump file and JHAT gives the following message and I can not parse anything (since the data is not displayed.

 Resolving 0 objects...

WARNING:  hprof file does not include java.lang.Class!

WARNING:  hprof file does not include java.lang.String!

WARNING:  hprof file does not include java.lang.ClassLoader!

Does this mean that the hprof file is incomplete or corrupt?

I am using an -XX:+HeapDumpOnOutOfMemoryError" option in my tomcat.

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2 answers

I just stumbled upon the same issue with my own heap dump.

  • jhat shows the warnings you are describing and there is no useful data displayed
  • Eclipse MAT complains about NullPointerException
  • VisualVM cannot open heap dump file at all

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http://forums.oracle.com/forums/thread.jspa?threadID=1175621&tstart=135

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. , heap=sites, . jhat jvisualvm. , jhat HPROF, heap=sites.

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Source: https://habr.com/ru/post/1782108/

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