Hi,
The error message “The EXECUTE permission was denied on the object… ” tells you that the account you are using, to connect to the BizTalkMgmtDb and run SQL statements, does not have permissions to run stored procedures. What is the context and scenario that you are in to cause this error message? Are you running a WMI script, a console application, etc.? If you make that account a member of the BizTalk Administrators and Operators groups, that should solve your issue.
Daniel.