When was the database last used?
Keep having to Duck this so I thought I’d make a post. In SQL Server, to check when a database was last in use, you can query the sys.dm_db_index_usage_stats system table like this:
select
DB_NAME(us.[database_id]) as [db],
OBJECT_NAME(us.[object_id], us.[database_id]) as [object],
MAX(us.[last_user_lookup]) as [last_user_lookup],
MAX(us.[last_user_scan]) as [last_user_scan],
MAX(us.[last_user_seek]) as [last_user_seek]
from sys.dm_db_index_usage_stats as us
where us.[database_id] = DB_ID()
group by us.[database_id], us.[object_id];
Using DB_NAME and OBJECT_NAME affords us better readability than would the internal DB and object IDs.
Credit
This query was written by user Russel Hart on Stack Overflow and lacking any other license, is reproduced under cc-by-sa 3.0