I've got a SQL Server 2000 system that has many databases in Full recovery with full, diff, and tlog backups. I'm seeing an unusual error that says "Database log truncated". It only shows as an error in the Application Event log. In the SQL Error log it doesn't show it as an error.
Here's the time sequence:
5AM Database log backup of db A
6AM Error: Database log truncated: Database: A
6:01AM Database differential changes backed up: Database: A
So my question is, how/why would the database log be truncated an hour after it has been backed up? I don't know if the Application Event log is erroneously reporting an error or if I have an actual problem.
Any help would be greatly appreciated!