jsadebugd - Online Linux Manual PageSection : 1
Updated : 21 November 2013
Source : JDK 8
Note : Troubleshooting Tools

NAMEjsadebugd − Attaches to a Java process or core file and acts as a debug server​. This command is experimental and unsupported​.

SYNOPSISjsadebugd pid [ server−id ]jsadebugd executable core [ server−id ]pid  The process ID of the process to which the debug server attaches​. The process must be a Java process​. To get a list of Java processes running on a machine, use the jps(1) command​. At most one instance of the debug server can be attached to a single process​. executable  The Java executable from which the core dump was produced​. core  The core file to which the debug server should attach​. server-id  An optional unique ID that is needed when multiple debug servers are started on the same machine​. This ID must be used by remote clients to identify the particular debug server to which to attach​. Within a single machine, this ID must be unique​.

DESCRIPTIONThe jsadebugd command 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 through Java Remote Method Invocation (RMI)​. Before you start the jsadebugd command, start the RMI registry with the rmiregistry command as follows where $JAVA_HOME is the JDK installation directory: rmiregistry −J−Xbootclasspath/p:$JAVA_HOME/lib/sajdi​.jarIf the RMI registry was not started, then the jsadebugd command starts an RMI registry in a standard (1099) port internally​. The debug server can be stopped by sending a SIGINT to it​. To send a SIGINT press Ctrl+C​. Note: This utility is unsupported and may or may not be available in future releases of the JDK​. In Windows Systems where dbgeng​.dll is not present, Debugging Tools For Windows must be installed to have these tools working​. The PATH environment variable should contain the location of jvm​.dll used by the target process or the location from which the crash dump file was produced​. For example, set PATH=%JDK_HOME%\jre\bin\client;%PATH%​.

SEE ALSO•  jinfo(1) •  jmap(1) •  jps(1) •  jstack(1) •  rmiregistry(1)
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