Because the principal "DBO" does not exist problem solution

Source: Internet
Author: User

An error occurred while deleting a publication during replication:

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.


This database is directly recovered from a 2k5 backup file to the 2k8 instance without any other settings.

This error occurs when I log on to sa.


  use master 
exec sys. sp_dbcmptlevel @ dbname = n 'mydb ', @ new_cmptlevel = 90 go use mydb go exec sys. sp_changedbowner @ loginame = SA, @ Map = ' dbowner ' go

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