The SQL health check script is not SQLT. It is a completely separate utility downloaded from a different Metalink note and used in a different way. Why is it even mentioned in this book? SQLHC is considered a backup option when SQLT cannot be installed. This does not happen very often, but when it does it is usually because of site restrictions. There are many reasons for this:
Not allowed to install anything on production (security reasons)
Not allowed to install anything on production (fear of affecting production)
Installation and testing procedures ...
