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Historical Data Files

When you enable historical data logging, data is stored in binary files in the persistence directory. By default, this directory for JMC 5.4.0 is located in USER-HOME/.jmc/5.4.0/data. To change the persistence directory:

  1. Open the Window menu and select Preferences.

  2. In the left pane, expand Java Mission Control, then expand JMX Console, and select Historical JMX Data.

  3. Modify the path in the Persistence directory field or click Browse to select the directory in the file system explorer.

  4. Click Apply to apply changes.

The persistence directory contains folders with names of the JVM connections for which data persistence was enabled. Each JVM connection folder contains subfolders with names of attributes for which data persistence was enabled. These subfolders contain the actual log files named values_id.histdata, and additional metadata files named series.info.

You can drag and drop the log files to the JMC console window to view them in the Historical Data window. Make sure that the folder structure is preserved for each JVM connection if you want to share the historical data files on the network.