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Questions tagged [jstack]

Java Virtual Machine (JVM) Stack Trace dumper tool.

149 questions
54
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11 answers

jstack - well-known file is not secure

I am running tomcat 5.5 on x86_64 CentOS 5.7 using 32-bit Oracle Java 1.6.0. JVM process used by tomcat has 6421 pid. Tomcat is working fine. When run jstack it fails with: [root@mybox ~]# jstack 6421 6421: well-known file is not secure To get any…
Michał Šrajer
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10 answers

jstack: Target process not responding

I am running Ubuntu server edition and I wanted to take a thread dump of Tomcat. So, I first tried to find out which PID tomcat uses: $ jps -l 5809 sun.tools.jps.Jps But it's not there? So, I used top instead and found out the PID 5730. Then I…
Timo Ernst
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33
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2 answers

How does jstack -F affect a running Java process?

I am trying to diagnose a problem where a Java web application I'm using (Jenkins) becomes unresponsive. If I run jstack without the -F flag it doesn't give me anything, but if I put the flag in to force a thread dump not only do I get a result, but…
Jordan Bentley
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28
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5 answers

Jstack and Not enough storage is available to process this command

I'm trying to run jstack command on my java application. Application is rather big, running inside jboss AS occupying about 4gb of memory. OS is Windows Server 2003 Standard edition. Every time i get an error "Not enough storage is available to…
tropikalista
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28
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1 answer

Gradle build stuck at "Waiting to acquire shared lock on daemon addresses registry."

I'm currently using HP Fortify tool to scan for security vulnerabilities in a project. At the time of scanning Fortify's CLI allows build tools to integrate into its CLI commands so as to build and simultaneously scan the files present in the…
Sekhar Routray
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24
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4 answers

Java thread dump: BLOCKED thread without "waiting to lock ..."

I'm having difficulties in understanding the thread dump I got from jstack for a Spring MVC web application running on Tomcat 6 (java 1.6.0_22, Linux). I see blocking threads (that cause other threads to wait) which are blocked themselves, however…
Oliver
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18
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4 answers

jstack not working on server

We use jstack on servers to detect if java apps are getting deadlocked. It's not working on one of our Linux servers. I think O/S version is: $cat /etc/issue.net Red Hat Enterprise Linux Server release 5.6 (Tikanga) Kernel \r on an \m Java version…
Sam Goldberg
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18
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2 answers

Jstack and Jstat stopped working with upgrade to JDK6u23

We recently upgraded from JDK6u20 (Linux, 32bit and 64bit) to JDK6u23. Since then, we cannot longer use the tools jstack and jstat to get monitoring information from the running process. If we switch back to JDK6u20, everything works fine. We are…
ReneS
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18
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5 answers

Getting the Java thread id and stack trace of run-away Java thread

On my busiest production installation, on occasion I get a single thread that seems to get stuck in an infinite loop. I've not managed to figure out who is the culprit, after much research and debugging, but it seems like it should be possible. …
Stu Thompson
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17
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3 answers

kill -3 or jstack : What is the difference?

I want to get the thread dump of my web app that running on a jboss server. I found two solutions for my problem : Using the unix command : kill -3 Using the jstack tool that exists in the JDK. Can anyone explain to me the difference between…
Anass
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15
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2 answers

Java Thread monitoring. How to find out non daemon live threads?

I see in JConsole that I still have 2 non daemon threads but I can't find out which exactly (total number of thread is beyond 30). Visual VM doesn't provide such information.
Bax
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14
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2 answers

Sun JDK /Open JDK on Cygwin

Is any version of Sun JDK or Open JDK available to be installed on cygwin. Reason I am looking for this option is: There are many tools (e.g. jStack, jMap) which are available in unix versions of JDK but not for windows version. I need to exploit…
Sandeep Jindal
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14
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4 answers

get java version of a running java process

I can use jps to list running java processes and use jstack -l process_id to get a stack information of a running java process. I want to know this process runs on which java version. Is there a way to do it? I don't have to use jstack tool.…
user3282611
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3 answers

How 'expensive' is it to execute jstack on a running JVM?

I'm considering whipping up a script to run once a minute (or every five minutes) run jstack against a running JVM in production parse the jstack output and tally up things I'm interested in export the results for graphing 24/365 by a centralized…
Stu Thompson
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10
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1 answer

Is it necessary to run jstack -F as root (on linux) and if so why?

Is it necessary to run jstack -F as root (on linux) and if so why? When trying to jstack -F my own processes I get the following error. Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process jstack -F…
lalala666
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