How to take database out of emergency mode?

In SQL Server 2000

sp_configure 'allow' ,1
GO
Reconfigure with override
GO
Update sysdatabases set status = status&(~32768) where name = 'SQLDBPool'
GO
sp_configure 'allow', 0
GO
Reconfigure with override
go


IN SQL Server 2005/2008

ALTER DATABASE sqldbpool
SET online