Today I wanted to install my OperationsmanagerDB on my SQL cluster 2005 SP2 actif-passive. So I started the DBCreatewizard.exe and I got a very strange error mentioning something about Severity: Error Message: Database creation failed. The database might have been incompletly created or modified. System.InvalidOperationException: An error occurred while trying to create the database on your SQL Server. Check your logs for more information. at Microsoft.EnterpriseManagement.Setup.DBCreateWizard.Program...(read more)

Read the complete post at http://scug.be/blogs/scom/archive/2009/05/29/opsmgr-db-create-wizard-system-invalidoperationexception.aspx