One of databases haven't successfully finished the backup procedure. The server application was still working, but nobody could not login.
The last lines in hansa.log:

2022-05-06 06:00:52 EnablerFileStateVc 25
2022-05-06 06:00:52 Exporting old records
2022-05-06 06:00:52 record CClassVc: skipped from export, completely blank header
2022-05-06 06:00:52 record CClassVc: skipped from export, completely blank header
2022-05-06 06:00:52 record CClassVc: skipped from export, completely blank header


After force quit, the system works and register CClassVc itself exported successfully.


What means: "completely blank header"?

/Piotr W.