LDAP scheduled refresh It is recommended that you run a scheduled scan of the LDAP server once a night. The scan queries all applicable user records' attributes and compares them to accounts on your instances. If the scan identifies a difference, the integration modifies the instance user record with the changed attribute. The load placed on the LDAP server during the refresh depends on how many records are queried and the number of attributes being compared. Schedule the refresh during off-peak hours at a time that minimizes conflicts. A large refresh operation can affect other scheduled operations, such as running reports.