The LDAP no-op control is a type of control that may be attached to an LDAP add operation, delete operation, modify operation, or modify DN operation to indicate that it should not actually make any change to the content in the server.
The LDAP no-op control is defined in draft-zeilenga-ldap-noop. This is a specification that is still in progress, but the directory server does provide basic support for this control using an object identifier of 126.96.36.199.4.1.4188.8.131.52. The control does not have a value.
The following example shows the use of the no-op control in an ldapmodify operation.
ldapmodify -h localhost -p 1389 -D "cn=directory manager" -w password \ -J 184.108.40.206.4.1.4220.127.116.11 dn: uid=aaltay,ou=People,dc=example,dc=com changetype: modify replace: telephoneNumber telephoneNumber: +1 995 589 3333 Processing MODIFY request for uid=aaltay,ou=People,dc=example,dc=com MODIFY operation failed Result Code: 16654 (No Operation) Additional Information: The modify operation was not actually performed in the Directory Server back end because the LDAP no-op control was present in the request