BizTalk has a schedule job that does incremental backups, usually every 15 minutes. But what if you want to do a full backup immediate?
Run this command in SQL Server Management Studio (SSMS):
USE BizTalkMgmtDb EXEC sp_ForceFullBackup
Then manually start the SQL agent job “Backup BizTalk Server (BizTalkMgmtDb)” (or wait until the next scheduled 15 minute interval).
The above is required if you get in the situation where you see this error in the 3rd step of the above backup agent job:
Error: BACKUP LOG cannot be performed because there is no current database backup.