DBCC dllname (FREE) Unloads a specific extended stored procedure DLL from memory. The user must be a member of the sysadmin fixed server role or the db_owner fixed database role.
DBCC FREESESSIONCACHE Flushes the distributed query connection cache. The user must be a member of the sysadmin fixed server role.
DBCC FREESYSTEMCACHE Flushes all unused cache entries from all caches. Access requires the ALTER SERVER STATE permission.
DBCC HELP Provides information on a specific DBCC command. The user must be a member of the sysadmin fixed server role.
DBCC TRACEOFF Disables specific trace flags. The user must be a member of the sysadmin fixed server role.
DBCC TRACEON Enables specific trace flags. The user must be a member of the sysadmin fixed server role.