Sometimes, an exception is thrown when you try to parse a large heap dump file.
Problem
Unable to open large hprof file, because of the exception shown below.
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An internal error occurred during: "Parsing heap dump from 'D:\tmp\oom1\java_pid14164.hprof'". Java heap space |
Cause
The heap size of Eclipse Memory Analyser Tool is not enough to parse a heap dump file.
Solution
Go to Eclipse MAT home directory and edit MemoryAnalyzer.ini file. Change -Xmx parameter value to appropriate one. There are situations in which it’s necessary to set -Xmx parameter value above the size of parsed heap dump file. i.e. if you try to open 4GB *.hprof and get Java heap space error, you should try to raise Xmx above 4GB: -Xmx5g
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-startup plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.300.v20150602-1417 -vmargs -Xmx5g |
I hope it was helpful to you. If you have any questions, feel free to ask me in comments below.
Hi THANKS for the information but when i am changing the value to 8g as my file is 7g ,I am getting error failed to create the java virtual machine,
Please reply what else I can do here
Try to increase swap file (linux) or pagefile (Windows). The total of free memory (free RAM + page file) should be larger than the file you try to open.