This statistic provides counts and rates for lookups of SQL sections in the private workspace.
On the Databases drilldown, counts and rates are provided for all lookups across all private workspaces in the database.
On the Client Application drilldown, counts and rates are provided for all lookups for all sections in the private workspace for the selected application.
You can use SQL section lookup statistics along with section inserts to help tune the size of the private workspace. The APPLHEAPSZ configuration parameter controls the size of the private workspace.