You can resolve it by following script.
EXEC sp_dbcmptlevel 'DummyDB', '90'; go ALTER AUTHORIZATION ON DATABASE::BIDashBoard TO "Domain\UserName" go use [DummyDB] go EXECUTE AS USER = N'dbo' REVERT go
What above solution does ?
It will first make your compatibility level to 90. You can determine the level by below script.
select compatibility_level from sys.databases where name = 'DummyDB'
Here are list of compatibility level and MSSQL version mapping,
* 60 = MSSQL 6
* 65 = MSSQL 6.5
* 70 = MSSQL 7
* 80 = MSSQL 2000
* 90 = MSSQL 2005
* 100 = MSSQL 2008
Other thing is it will set authorization to the user name provided.
Right Click on Database
Go to properties
you will end up as shown below.
Before running this script owner tab will be blank.
You can run above script or either go to the click button near by textbox and locate your user.