How to capture heap dumps of a JVM on a unix server

Hello everyone. In this video, we will be discussing the steps to capture the heap dumps of a JVM in a Unix server. Heap dumps are vital artifacts to diagnose memory related problems, such as slow imagery, garbage collection problems, and out of memory error. Heap dumps are usually stored in a binary format edge profiles. To capture the heap dumps, we need to follow some simple steps. Log on to the application server, identify the process ID of your application server, execute a PS command to find the process ID. Java provides the heap dump on out of memory error, command line option that generates a heap dump, then a JAVA.line.outofmemoryerror is true. By default, it stores the dump in the JAVA PID file or directory that we are running the application. If we want to specify another file or directory, we can set it in the heap dump path option. Set, XX:HeapDumpPath=Mpath/heapdump to write a directory or file on Java’s command line for starting up Jboss, as here we are using Jboss application server and the bin folder. Heap dump may take several minutes depending on the amount of allocated space for the heap. As we follow these commands, a heap dump is generated in the summary view.

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