I will not go into a full discussion as to why you would want to convert HEAP into a Clustered table .. as there are plenty of resources out there that describe those elements and the relevant Pro's & Con's However you may just want to understand which database tables are of the HEAP variety and how many of them "percentage wise" exist in each of your Databases So here is a useful script I have (it uses the sp_msforeachDB to iterate through all DBs on an instance), that easily...(read more)