The Troubleshooting Tools
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Jcmd - Send Diagnostic Commands to a JVM
Sending diagnostic command requests to a running Java Virtual Machine (JVM).
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Jdb - Fixing Bugs in Java Programs
Find and fixing bugs in Java platform programs.
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Jhsdb - Analyzing the Core Dump of a Crashed JVM
Attach to a Java process or launch a postmortem debugger to analyze the content of a core dump from a crashed Java Virtual Machine (JVM).
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Jinfo - Generating Java Configuration Information
Generating Java configuration information for a specified Java process.
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Jmap - Printing Detais of a Process
Printing details of a specified process.
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Jstack - Printing Java Stack Traces
Printing Java stack traces of Java threads for a specified Java process.