Backup Database Task - User Permissions

Question

Hi
I am currently implementing an SSIS package to cater for the backup of our database system.  I am using a Back Up Database Task connecting to the database using SQL Authentication.  This login has public server rights and db_backupoperator database
role rights.
Having tested the package, it seems to fail on the backup task because of the following error:
[Execute SQL Task] Error: Executing the query "BACKUP DATABASE [CAAP] TO  DISK = N'R:\CAAP_Backup..." failed with the following error: "Only users who are members of the following roles can perform this operation: sysadmin fixed server
role; dbowner or dbcreator fixed database role in the current database.
Only users who are members of the following roles can perform this operation: sysadmin fixed server role; dbowner or dbcreator fixed database role in the current database.
Why does it need dbOwner/dbCreator/sysadmin rights to execute a simple backup?  Isn't this the point of the dbBackupOperator role?
Thanks.

Answer 1

Hi divvyboy,
I am unable to reproduce the issue in my test environment. The backup script works well in an Execute SQL Task which uses the ADO .NET Connection Manager created by a Back Up Database Task using SQL Server authentication type. Only the Public and db_backupoperator
database roles is okay.
According to the screenshots, the error was thrown by the Execute SQL Task actually. Since the package also contains a Back Up Database Task, there is no need to perform the backup operation from the Execute SQL Task. You can test whether the Back Up Database
Task which doesn’t need us to input a backup script can perform the database backup correctly. If the Back Up Database Task works well, you can remove the Execute SQL Task and go with the Back Up Database Task.
Regards,
Mike Yin
TechNet Community Support