jsadebugd

Serviceability Agent Debug Daemon

Synopsis

jsadebugd pid [ server-id ]
jsadebugd executable core [ server-id ]

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examples

source

            
  jrunscript \


  jsadebugd \


  jstack \


  jstat \


  jstatd \


  jvisualvm \


  native2ascii \


  rmic \


  schemagen \


  serialver \

source

            
  jdk jrunscript $JVM/bin/jrunscript


  jdk jsadebugd
  $JVM/bin/jsadebugd


  jdk jstack $JVM/bin/jstack


  jdk jstat $JVM/bin/jstat


  jdk jstatd $JVM/bin/jstatd


  update-alternatives --install /usr/bin/jsadebugd
  jsadebugd $JVM/bin/jsadebugd $PRIO --slave
  /usr/share/man/man1/jsadebugd.1 jsadebugd.1
  $JVM/man/man1/jsadebugd.1

description

jsadebugd attaches to a Java process or core file and acts as a debug server. Remote clients such as jstack, jmap, and jinfo can attach to the server using Java Remote Method Invocation (RMI). Before starting jsadebugd, rmiregistry must be started with:

rmiregistry -J-Xbootclasspath/p:$JAVA_HOME/lib/sajdi.jar

where $JAVA_HOME is the JDK installation directory. If rmiregistry was not started, jsadebugd will start an rmiregistry in a standard (1099) port internally. Debug server may be stopped by sending SIGINT (pressing Ctrl-C) to it.

NOTE - This utility is unsupported and may or may not be available in future versions of the JDK. jsadebugd is not currently available on Windows platforms.

parameters

pid

process id of the process to which the debug server should attach. The process must be a Java process. To get a list of Java processes running on a machine, jps may be used. At most one instance of the debug server may be attached to a single process.

executable
Java executable from which the core dump was produced
core

Core file to which the debug server should attach.

server-id

Optional unique id, needed if multiple debug servers are started on the same machine. This ID must be used by remote clients to identify the particular debug server to attach. Within a single machine, this ID must be unique.

see also

jinfo

jmap

jps

jstack

rmiregistry