Cannot create plan guide '%.*ls' because object '@module_or_batch' is encrypted. Consider tuning query using other techniques such as indexes and statistics.

Error Message:
Msg 10512, Level 16, State 1, Procedure, Line 2
Cannot create plan guide ‘%.*ls’ because object ‘@module_or_batch’ is encrypted. Consider tuning query using other techniques such as indexes and statistics.

Severity level:
16.

Description:
This error message appears when you try to create a planguide, but the object specified in the @module_or_batch parameter is encrypted.

Consequences:
The T-SQL statement can be parsed, but causes the error at runtime.

Resolution:
Errors of the Severity Level 16 are generated by the user and can be fixed by the SQL Server user. The statement cannot be executed this way. Objects cannot be encrypted.

Versions:
This error message was introduced with SQL Server 2005.

Example(s):
IF OBJECT_ID (‘dbo.t’) IS NOT NULL
    DROP TABLE dbo.t;
GO

CREATE TABLE dbo.t
(
    c1 int
);
GO

IF OBJECT_ID (‘dbo.p’) IS NOT NULL
    DROP PROCEDURE dbo.p;
GO

CREATE PROCEDURE dbo.p
    @p int
WITH ENCRYPTION
AS
SELECT
    c1
FROM
    dbo.t
WHERE
    c1 = @p;
GO

EXEC sp_create_plan_guide
    @name = ‘Guide1’,
    @stmt = ‘SELECT
                c1
            FROM
                dbo.t
            WHERE
                c1 = @p’,
    @type = ‘OBJECT’,
    @module_or_batch = ‘p’,
    @params = NULL,
    @hints = ‘OPTION (OPTIMIZE FOR (@p = 1))’;

EXEC sp_control_plan_guide ‘DROP’, ‘Guide1’;

Remarks:
In the above example we try to create a planguide. Because the procedure dbo.p is encrypted, the error is raised.

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