Saturday, September 29, 2012

SQL SERVER – Fix: Error: 15138 – The database principal owns a schema in the database, and cannot be dropped

The database principal owns a schema in the database, and cannot be dropped. (Microsoft SQL Server, Error: 15138)

 The reason for error is quite clear from the error message as there were schema associated with the user and that needs to be transferred to another user.

Let us assume that user was trying to delete user which is named as ‘mtohamy’ and it exists in the database ‘TWO’.
Now run following script with the context of the database where user belongs.
USE TWO;SELECT s.nameFROM sys.schemas sWHERE s.principal_id USER_ID('mtohamy');
In my query I get following two schema as a result.

Now let us run following query where I will take my schema and and alter authorization on schema. In our case we have two schema so we will execute it two times.
ALTER AUTHORIZATION ON SCHEMA::db_denydatareader TO dbo;ALTER AUTHORIZATION ON SCHEMA::db_denydatawriter TO dbo;
Now if you drop the database owner it will not throw any error.
Here is generic script for resolving the error:
SELECT s.nameFROM sys.schemas sWHERE s.principal_id USER_ID('mtohamy');
Now replace the result name in following script:

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