Active directory. Active Directory stores the entry and the details for the changes made to the entry along with the entry. The PowerCenter Integration Service determines the change type based on the values for uSNCreated, uSNChanged, and isDeleted attributes of an entry. If an entry is created, the uSNCreated and uSNChanged contains same value. If you update an entry, the uSNChanged value is modified indicating that the entry is updated in the directory server. If you delete an entry, isDeleted is set to True indicating that the entry is deleted from the directory server. Data is retrieved for the uSNChanged attribute, regardless of whether uSNChanged is included as one of the columns in the LDAP source.

Other directory servers. The different directory servers are Netscape, IPlanet, SunOne, and IBM. The changes are logged under the default cn=changelog node. The directory server adds an entry for each add, modify, and delete operation to the directory under the cn=changelog node. Verify that the changelog option is enabled on the LDAP directory server.