The ActSummaryId property identifies the 
ActSummary VST. This VST contains general information about temp-table database activity, such as the number of transactions committed and rolled back; the number of records read, updated, created, and deleted; the number of record locks and waits; the number of database reads and writes; before-image and after-image information; and buffer information. You can pass the 
ActSummaryId property to the 
GetVSTHandle() method to return the handle to the 
ActSummary VST. This property is read-only.