Connecting to 'jps' to Remote 'jstatd'

This section provides a tutorial on how to run 'jps' to connect to a remote 'jstatd' server with a RMI URL to list all JVM processes on the remote machine.

With the "jstatd" server running on my local machine as described in the previous section, now I am ready to test how to connect to this "jstatd" server with the "jps" command from a remote machine to list JVM processes.

1. Run my test Java program in another command window on my local machine:

C:\herong>\Progra~1\java\jdk1.8.0\bin\java PrimeNumberSeeker 10 200

Period, Current int, # primes
1, 2, 0
2, 10, 4

2. Run the "jps" command to connect to the "jstatd" server with the "rmi://localhost" URL as the host identifier:

C:\herong>\Progra~1\java\jdk1.8.0\bin\jps -l -m -v rmi://localhost

RMI Registry not available at localhost:1099
Connection refused to host: localhost; nested exception is: Connection refused: connect

3. The cause of the error is obvious, the "jstatd" server started the internal RMI registry at the port 1234, not the default port 1099. So Run the "jps" command again with the "rmi://localhost:1234":

C:\herong>\Progra~1\java\jdk1.8.0\bin\jps -l -m -v 

3056 -p 1234 -Dapplication.home=C:\jdk -Xms8m
4080 -l -m -v rmi://localhost:1234 
   -Dapplication.home=C:\Program Files\java\jdk1.8.0 -Xms8m
2024 PrimeNumberSeeker 10 200

Cool. The "jps" successfully connected to the RMI registry through the "jstatd" server. The output shows correctly all running JVM processes.

Last update: 2015.

Table of Contents

 About This Book

 Java Tools Terminology

 Installing Java 8 on Windows

 'javac' - The Java Program Compiler

 'java' - The Java Program Launcher

 'jdb' - The Java Debugger

 'jconsole' - Java Monitoring and Management Console

'jstat' - JVM Statistics Monitoring Tool

 'jps' - JVM Process Status Tool

 Listing JVM Processes on the Local Machine with "jps"

 'jstatd' - JVM Remote Monitoring Server

 Starting 'jstatd' with a Security Policy File

Connecting to 'jps' to Remote 'jstatd'

 'jstat' Command Options and Parameters

 Garbage Collection Testing Program

 'jstat -gcutil' - Garbage Collection Statistics

 Accessing Remote JVM Processes with 'jstat'

 JVM Troubleshooting Tools

 jvisualvm (Java VisualVM) - JVM Visual Tool

 'jar' - The JAR File Tool

 'javap' - The Java Class File Disassembler

 'keytool' - Public Key Certificate Tool

 'native2ascii' - Native-to-ASCII Encoding Converter

 Outdated Tutorials


 PDF Printing Version