Symptom
FMC backup failure due to the following error which can be found in backup log file:
SQL error (-85) -- Communication error
SQL error (-101) -- Not connected to a database
SQL error (-101) -- Not connected to a database
SQL error (-101) -- Not connected to a database
SQL error (-101) -- Not connected to a database
SQL Anywhere Validation Utility Version 16.0.0.2747
WARNING: database being validated was not started read-only
VALIDATE DATABASE
5 errors reported
[Mon May 4 19:23:11 2020] Validation /var/tmp/backupkS58/0/vms/database/vms.db failed.
[Mon May 4 19:23:11 2020] Validation /var/tmp/backupkS58/0/vms/database/vms.db failed.
[Mon May 4 19:23:14 2020] ERROR(1843): Database vms backup failed and . Check the log file for information.
[Mon May 4 19:23:14 2020] Backup failed: 2020/05/04 19:23:14
Workaround
Try to generate backup again.