java_pidXXXX(number).hprof file is the dump output file for JavaVM.
The output timing of the file complies with the Java specification.
・ How to prevent this file from being output
Currently, "-XX:+HeapDumpOnOutOfMemoryError" is specified in jvm_args of Resin setting file (conf/resin.properties), and the .hprof file is output when OutOfMemoryError occurs.
If you delete this specification, it will not be output when OutOfMemoryError occurs.
Also, if this specification is deleted, the .hprof file will not be output when memory shortage occurs in JavaVM, so you will not be able to check the contents of this file, such as when investigating the cause of memory shortage.
・ Is it safe to delete it?
It is not a file referenced from the system, so there is no problem if you delete it.
* Deleting this file will interfere with the cause investigation etc. when the file is needed (such as when OutOfMemoryError occurs).
For this reason, we recommend that you move it to a different location and store it instead of deleting it.
・ Is it possible to investigate the cause from this file?
By analyzing this file, you can understand what kind of process uses a lot of memory, and so on.
For the analysis method, please refer to the document published by the Java provider.
*Notes
Our Product Support does not respond to inquiries etc. regarding Java specifications introduced above.
Please refer to the following page for product support coverage.
https://product.intra-mart.support/hc/ja/articles/360037451853
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FAQID:1224
What is the .hprof file?
