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On Linux when using -XX+HeapDumpOnOutOfMemoryError the hprof file produced is owned by the user under which the java process is running and has permissions of 600.
I understand that these permissions are best security wise but is it possible to override them?
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In order to capture a heap dump automatically, we need to add the HeapDumpOnOutOfMemoryError command-line option that generates a heap dump when a java. lang. OutOfMemoryError is thrown.
Right-click on one of the Java process. Click on the 'Heap Dump' option on the drop-down menu. Heap dump will be generated. File path where heap dump is generated will be specified in the Summary Tab > Basic Info > File section.
You can start the JVM with
java -XX:+HeapDumpOnOutOfMemoryError -XX:OnOutOfMemoryError="chmod g+r java_pid*.hprof" {mainclass} {args}
The command runs after the heap dump is created. This will allow group read access to all heap dump files in the current directory for example.
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