The Windchill ESI application leverages checkpoint activities at key points in the TIBCO BusinessWorks processing flow. A checkpoint saves the process data and state of the current running process instance so that it can be recovered at a later time in the event of a failure. If a process engine fails, all process instances can be recovered and can resume execution at the location of their last checkpoint in the process definition. Only the most recent state is saved by a checkpoint. If you have multiple checkpoints in a process, only the state from the last checkpoint is available for recovering the process.

The location of Windchill ESI checkpoints has been strategically designed to ensure robust transaction integrity while minimizing adverse performance effects. Occasionally, you may need to manually override an activated checkpoint to restart transaction processing from scratch when the process engine is restarted.

However, if circumstances warrant it, you can override checkpoints by deleting the <Tibco_Home>/tra/domain/<Domain_Name>/application/<Application_Name>/working directory and its contents. Depending on the process engine mode, there may be many other /working subdirectories under the /tibco path that would need to be deleted. Do a search for /working to locate and remove all of these subdirectories.