For large-scale installations with Access Manager, Messaging Server, and an LDAP Schema 2 directory, you might want to consolidate the Access Control Instructions (ACIs) in your directory.
When you install Access Manager with Messaging Server, a large number of ACIs initially are installed in the directory. Many default ACIs are not needed or used by Messaging Server. You can improve the performance of Directory Server and, consequently, of Messaging Server look-ups, by consolidating and reducing the number of default ACIs in the directory.
For information about how to consolidate and discard unused ACIs, see Appendix F, Consolidating ACIs for Directory Server Performance, in Sun Java System Delegated Administrator 6.4 Administration Guide.