Q: What if I delete accidentally some of these files?
A: The system can “ride through” that. However, some operations (e.g., a trend plot) will fail until the database is “reindexed” (i.e., infonode.db is rebuilt from the settings.db and d*.db.
A database can always be rebuilt from settings.db and 0 or more d*.db files.
To do so you:
* Stop the ESS service
* Delete all files in system\data directory
* Copy settings.db and d*.db to the system\data directory
* Start the ESS service
* Take a break and get a cup of coffee