Sunday, January 11, 2015

Taking java heap dump and thread dump in linux from command line

Taking java heap dump:
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jmap -dump:format=b,file=output_file.bin PID_of_process
Example:   /usr/java/jdk1.7.0_55/bin/jmap -dump:format=b,file=/tmp/heapdump_PID_15034.bin 15034

Taking java thread dump:
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jstack -l >output_file.txt
Example:   /usr/java/jdk1.7.0_55/bin/jstack -l 15034 >/tmp/threaddump.txt

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