OpenEdge Replication allows a maximum of two agents per server. You can designate one agent as a critical agent, which means that transition will start automatically for that agent's target database during failure processing. For example, if you have two target databases, only the database managed by a critical agent will automatically transition during failure processing.

You can define only one critical agent. If you configure a second critical agent, it will be changed to a noncritical agent. All agents by default are noncritical.

You identify an agent as critical in the source database property file. For more information, see Configuring the OpenEdge Replication property files.