Question

SQL Server 2008 Truncate Table: "the principal "dbo" does not exist"

Asked by: DarthSonic

Below is a stored procedure I created as SysAdmin (User 'sa') to be able to truncate selected tables with an user that has not the permission to do this by default. It worked until today. What have happend? Can someone help?

If I execute the query:
EXEC [sp_cu_TruncateTable] 'FingerWeg'

I am getting the error:
Cannot execute as the database principal because the principal "dbo" does not exist, this type of principal cannot be impersonated, or you do not have permission.

CREATE PROCEDURE [sp_cu_TruncateTable]
	@TableName varchar(100)
	WITH EXECUTE AS SELF
AS
BEGIN 
 
	IF @TableName = 'Packstationen'
		OR @TableName = 'ftConfig'
		OR @TableName = 'Portokosten_Coop_Temp'
		OR @TableName = 'Portokosten_Coop'
		OR @TableName = 'products_without_properties'
		OR @TableName = 'products_hot'
		OR @TableName = 'FingerWeg'
	EXEC ('TRUNCATE TABLE ' + @TableName);
 
END
                                  
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Asked On
2009-08-04 at 03:28:12ID24624111
Tags

sql server 2008

,

sql 2008

,

truncate table

,

dbo

,

principal

Topics

SQL Server 2008

,

SQL Query Syntax

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: lsavidgePosted on 2009-08-04 at 03:32:06ID: 25012074

One thing to note that probably is not the cause of the issue. Do not name your stored procedures with sp_ as the prefix. sp_ sp's are the system stored procedures. Ones that are prefixed with xp_ are extended stored procedures. I'll look at the error in a sec.

Lee

 

by: djjariesPosted on 2009-08-04 at 03:36:10ID: 25012104

What happens when you try any of the other tables? I would suggest looking at the ownership of the tables (and database) too. Is sa the owner of the database?

 

by: lsavidgePosted on 2009-08-04 at 03:36:10ID: 25012105

Try this. It is for 2005 but may still be applicable in 2008.

http://support.microsoft.com/kb/913423

Lee

 

by: lsavidgePosted on 2009-08-04 at 03:38:37ID: 25012116

 

by: DarthSonicPosted on 2009-08-04 at 03:40:47ID: 31611329

Database Owner was the problem! It was a window account not 'sa'. So the following command worked:

ALTER AUTHORIZATION ON DATABASE::myDB TO sa

20120131-EE-VQP-002

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