WebLogic JDBC performance analyzing using Java Flight Recorder by Christos Vezalis

Posted: March 28, 2016 in WebLogic
Tags: , , , , ,

 

clip_image002Java Flight Recorder (JFR) is a tool for monitoring Java applications. JFR is integrated into Java Virtual Machine (JVM). It have less than 1% overhead and is capable for monitoring production systems without affecting performance.
To enable JFR with the JVM that will run a WebLogic server we need to start the WebLogic using 2 flags:

The JVM default JMX port is 7091. We can change it and set it for example to 7093 using:

This is useful when monitoring multiple managed servers on the same machine. Each managed server can have it’s own port.
For development servers we can also disable authentication and SSL using the following (this is an insecure setting, do not use it with production machines): Read the complete article here.

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