On all Oracle ATG Web Commerce instances running the DAF.Search module—which should include asset management, production, and staging if used—use Dynamo Server Admin (see the ATG Installation and Configuration Guide for information on using this tool) to view the /atg/search/routing/repository/SearchConfigurationRepository.

Find the lockManager property, and click on the component value (for example, /atg/dynamo/service/ClientLockmanager).

If no lock manager has been assigned, assign one now.

In the lock manager component, ensure that useLockServer is set to true, and that the same values for lockserverPort and lockServerAddress are used on all Oracle ATG Web Commerce instances.

Ensure that a ServerLockManager is running on the host and port referred to by the ClientLockManager components.

See the Locked Caching section in the ATG Repository Guide for more information.