At other times, during routine DSN use, the SQL Server connection need only have read and update permissions to SYSIBM, assuming that the SYSIBM owner has update permissions for the tables in the SYSIBM schema.
You can prevent DSN from executing these SQL scripts by executing them manually immediately after creating your SQL Server database and immediately after performing an HCOSS upgrade. All three script files reside in your %ALLUSERSPROFILE%\Micro Focus\Enterprise Developer\hcoss directory.