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javatomcatthread-dumpjstack

Empty Tomcat thread dumps using jstack

Trying to collect thread dump of Apache Tomcat8.5 in windows server I ended using jstack with psexec as follows(as using jstack directly wasn't possible, so I'm using pexec to execute jstack using syetm process):

PsExec.exe -s "C:\Program Files\Java\jdk1.7.0_40\bin\jstack.exe" -l 5340 > dumps.txt

with 5340 is the PID of the running Tomcat8 process.

The execution started without any errors and it shows this output:

PsExec.exe -s "C:\Program Files\Java\jdk1.7.0_40\bin\jstack.exe" -l 5340 > dumps.txt

 PsExec v2.2 - Execute processes remotely Copyright (C) 2001-2016 Mark Russinovich Sysinternals - www.sysinternals.com

Starting C:\Program Files\Java\jdk1.7.0_40\bin\jstack.exe on VMNAME...

When I check th dumps.txt I find it empty, even I'm running The command line as Admin.

enter image description here

Thnks for your help!

Solution

  • As a conclusion to the discussion. You need to use the same VM version for executing a jstack command as the VM version you are going to inspect. In case of any errors, you could try a -F param to jstack. Also, you don't need PsExec tools on newer VMs anymore.