when i run
ALTER DATABASE EMS102013 SET SINGLE_USER;
DBCC CHECKDB (EMS102013) WITH NO_INFOMSGS, ALL_ERRORMSGS
show message
Msg 8921, Level 16, State 1, Line 1
Check terminated. A failure was detected while collecting facts. Possibly tempdb out of space or a system table is inconsistent. Check previous errors.
how can fix this problem