Removes all clean buffers from the buffer pool.
DBCC DROPCLEANBUFFERS
Use DBCC DROPCLEANBUFFERS to test queries with a cold buffer cache without shutting down and restarting the server.
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
DBCC DROPCLEANBUFFERS permissions default to members of the sysadmin fixed server role only, and are not transferable.