You may want to re-index
the IMSVA database
tables if you encounter slow performance when performing queries.
As re-indexing can impact the scanner performance, Trend Micro recommends
that you do this during off-peak hours.
Procedure
Go to Administration → Database Maintenance.
The Database Maintenance Schedule screen
appears.
Select the Re-index database tables check
box.
Select the weekly or monthly schedule from the drop-down
boxes.