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DBReqair.jar User Guide


This tool is only for users who have downgraded the java-tron version to GreatVoyage-v4.2.1(Origen) or GreatVoyage-v4.2.0(Plato) from GreatVoyage-v4.2.2(Lucretius) or other higher versions.

If users meet the above conditions, users need to execute the DBReqair.jar tool to repair the database before users can start FullNode.jar normally.

Tool Homepage:


  1. Download the “DBRepair.jar” and “” from the tool homepage and place them in the same directory as “FullNode.jar”.
  2. Go to the “FullNode.jar” directory and execute the “” file:
sh ./
  1. Open the log file “logs/tron.log” and wait for the execution to complete, you will see "Repairment completed!" in log output once execution is complete. (DBRepair will automatically exit after the execution is completed).
  2. Now the repair of the database has been completed. users can start the node normally with the latest version GreatVoyage-v4.2.2.1(Epictetus)


This tool only needs to be executed once.

Updated about a month ago

DBReqair.jar User Guide

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