启用Ad Hoc Distributed Queries：
exec sp_configure ‘show advanced options‘,1
reconfigure
exec sp_configure ‘Ad Hoc Distributed Queries‘,1
reconfigure
关闭Ad Hoc Distributed Queries：
exec sp_configure ‘Ad Hoc Distributed Queries‘,0
reconfigure
exec sp_configure ‘show advanced options‘,0
reconfigure
原文：http://www.cnblogs.com/xinaixia/p/3968106.html