By using the start options DIRTIME and DIRSIZE, you can control how long a resource remains in the directory services database and how many dynamic entries are maintained.

The DIRTIME start option specifies the amount of time a dynamic resource remains in the directory database without being used before it is deleted. The default value for this start option is eight days.

The DIRSIZE start option defines the maximum number of dynamically added resources that are stored in the database. After the number of dynamic resources reaches the maximum, new resources are added to the database in place of the resources that have gone the longest without being referenced.