Here are some Java utilities (with common parameters) we use for troubleshooting Production issues.
Display a list of all Java processes.
>jps
Display a list of all Java processes with full command line information.
>jps -lmv
Print available jstat options.
>jstat -options
Display GC information for the given process id.
>jstat -gc {pid}
Create a thread dump, displayed on the console, for the given process id.
>jstack {pid}
Display heap summary for the given process id.
>jmap -heap {pid}
Display heap histogram for the given process id.
>jmap -histo:live {pid}
Create a heap dump in hprof format.
>jmap -dump:live,format=b,file=dump.hprof {pid}
Display available commands that can be sent to the Java process with the given id.
>jcmd {pid} help
Force a garbage collection.
>jcmd {pid} GC.run
Display uptime information.
>jcmd {pid} VM.uptime
Display performance information.
>jcmd {pid} PerfCounter.print
These utilities are great for scripting and headless environments. If you wish to work with graphical interface, check out VisualVM. Here’s a list of all the JDK Tools and Utilities.