How to disable disallowadhocaccess in SQL Server 2008

I'm trying to get data from another database using the OPENDATASOURCE command, but I get an error about DisallowAdHocAccess.

The SQL Server ve开发者_开发技巧rsion is 2008 Express Edition, running on a remote site.

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OPENROWSET can be used to access remote data from OLE DB data sources only if the DisallowAdhocAccess registry option is explicitly set to 0. When this option is not set, the default behavior does not allow ad hoc access.

HOW TO: Use the DisallowAdHocAccess Setting to Control Access to Linked Servers

Accessing External Data

An ad hoc name is used for infrequent queries against OLE DB data sources that are not defined as linked servers. In SQL Server, the OPENROWSET and OPENDATASOURCE functions provide connection information for accessing data from OLE DB data sources. By default, ad hoc names are not supported. The DisallowAdhocAccess provider option must be set to 0 and the Ad Hoc Distributed Queries advanced configuration option must be enabled.

Security Note

Enabling the use of ad hoc names means that any authenticated login to SQL Server can access the provider. SQL Server administrators should enable this feature only for highly trusted providers that are safe to be accessed by any local login.

OPENROWSET and OPENDATASOURCE should be used only to reference OLE DB data sources that are accessed infrequently. For any data sources that will be accessed more than several times, define a linked server. Neither OPENDATASOURCE nor OPENROWSET provide all the functionality of linked server definitions. This includes security management and the ability to query catalog information. Every time that these functions are called, all connection information, including passwords, must be provided.