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OLE Automation Sample Script

This topic contains an example of a Transact-SQL statement batch that uses the OLE Automation stored procedures to create and use an SQL-DMO SQLServer object in the local instance of the SQL Server 2005 Database Engine. Parts of the code are used as examples in the reference topics for the OLE Automation system stored procedures.

USE AdventureWorks;
GO
DECLARE @Object int;
DECLARE @HR int;
DECLARE @Property nvarchar(255);
DECLARE @Return nvarchar(255);
DECLARE @Source nvarchar(255), @Desc nvarchar(255);

-- Create a SQLServer object.
SET NOCOUNT ON;

-- First, create the object.
EXEC @HR = sp_OACreate N'SQLDMO.SQLServer',
    @Object OUT;
IF @HR <> 0
BEGIN
    -- Report the error.
    EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
    SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
    GOTO END_ROUTINE
END
ELSE
-- A DMO.SQLServer object has been successfully created.
BEGIN
    -- Specify Windows Authentication for connections.
    EXEC @HR = sp_OASetProperty @Object,
        N'LoginSecure',
        N'TRUE';
    IF @HR <> 0 GOTO CLEANUP

    -- Set a property.
    EXEC @HR = sp_OASetProperty @Object,
        N'HostName',
        N'SampleScript';
    IF @HR <> 0 GOTO CLEANUP

    -- Get a property using an output parameter.
    EXEC @HR = sp_OAGetProperty @Object, N'HostName', @Property OUT;
    IF @HR <> 0 
        GOTO CLEANUP
    ELSE
        PRINT @Property;

    -- Get a property using a result set.
    EXEC @HR = sp_OAGetProperty @Object,
        N'HostName';
    IF @HR <> 0 GOTO CLEANUP

    -- Get a property by calling the method.
    EXEC @HR = sp_OAMethod @Object,
        N'HostName',
        @Property OUT;
    IF @HR <> 0 
        GOTO CLEANUP
    ELSE
        PRINT @Property;

    -- Call the connect method.
    -- SECURITY NOTE - When possible, use Windows Authentication.
    EXEC @HR = sp_OAMethod @Object,
        N'Connect',
        NULL,
        N'localhost',
        NULL,
        NULL;
    IF @HR <> 0 GOTO CLEANUP

    -- Call a method that returns a value.
    EXEC @HR = sp_OAMethod @Object,
        N'VerifyConnection',
        @Return OUT;
    IF @HR <> 0
        GOTO CLEANUP
    ELSE
        PRINT @Return;
END

CLEANUP:
-- Check whether an error occurred.
IF @HR <> 0
BEGIN
    -- Report the error.
    EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
    SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
END

-- Destroy the object.
BEGIN
    EXEC @HR = sp_OADestroy @Object;
    -- Check if an error occurred.
    IF @HR <> 0 
    BEGIN
        -- Report the error.
        EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
        SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
    END
END

END_ROUTINE:
RETURN;
GO

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