Red Hat Directory Server LDAP search takes too long, notes=U in access log

Solution Verified - Updated -

Issue

LDAP searches take a long time and show notes=U in the access log, when the number of objects is greater than 4000.
An ldapsearch filter of objectclass=nstombstone took 3 seconds when the number of objects was < 4000, 21 minutes when > 4000.

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Directory Server 8
  • redhat-ds-8.2.0-2.el5dsrv
  • redhat-ds-base-8.2.4-1.el5dsrv

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